NBG / National Bank of Greece SA - Pemfailan SEC, Laporan Tahunan, Penyata Proksi

National Bank of Greece SA
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SIMBOL INI TIDAK AKTIF LAGI

Statistik Asas
LEI 5UMCZOEYKCVFAW8ZLO05
CIK 1096061
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to National Bank of Greece SA
SEC Filings (Chronological Order)
Halaman ini menyediakan senarai kronologi lengkap bagi Pemfailan SEC, tidak termasuk pemfailan pemilikan yang kami sediakan di tempat lain.
March 18, 2019 EX-99

NATIONAL BANK OF GREECE

Exhibit 99 NATIONAL BANK OF GREECE Athens, March 18, 2019 Press Release National Bank of Greece files Form 15F to terminate SEC registration and reporting obligations National Bank of Greece (“NBG”) announces its intention to file a Form 15F with the U.

March 18, 2019 15-12B

NBG / National Bank of Greece SA 15-12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15F CERTIFICATION OF A FOREIGN PRIVATE ISSUER’S TERMINATION OF REGISTRATION OF A CLASS OF SECURITIES UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ITS TERMINATION OF THE DUTY TO FILE REPORTS UNDER SECTION 13(a) OR SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-14960 EQNIKH

March 18, 2019 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2019 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 4, 2019 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2019 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

February 15, 2019 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of February, 2019 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

January 24, 2019 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of January, 2019 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

January 22, 2019 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of January, 2019 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

January 7, 2019 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of January, 2019 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

December 6, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-4116916k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

November 30, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-4083416k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

November 29, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-4089216k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

November 26, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 26, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-4064216k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

November 13, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 2, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

October 17, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-3687216k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

October 4, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

August 31, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-2407016k.htm 6-K Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offic

August 31, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 24, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 1, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

July 31, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 27, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 26, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 26, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 23, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 …………………………………………………………………………….,. National Bank of Greece S.A. …………………………………………………………………………………………. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece ………………………………………

July 19, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 18, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-1738616k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by che

July 6, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 5, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 5, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 22, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 11, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

May 31, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-1460616k.htm 6-K Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10559 Athens, Greece (Address of principal executive offices)

May 31, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10559 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 29, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 16, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 15, 2018 20-F

NBG / National Bank of Greece SA 20-F

20-F 1 a2235559z20-f.htm 20-F Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS 2 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) o REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE

May 15, 2018 EX-13.1

Certification of the Acting Chief Executive Officer / Deputy Chief Executive Officer and the Group Chief Financial Officer pursuant to Rule 13a-14(b) under the Securities Exchange Act of 1934 and 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 13.1 CERTIFICATION Certification of Acting Chief Executive Officer and Deputy Chief Executive Officer and Group Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. In connection with the Annual Report on Form 20-F of National Bank of Greece S.A. ("

May 15, 2018 EX-12.1

Certifications of the Acting Chief Executive Officer / Deputy Chief Executive Officer and the Group Chief Financial Officer pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.

QuickLinks - Click here to rapidly navigate through this document Exhibit 12.1 CERTIFICATION I, Paul Mylonas, certify that: 1. I have reviewed this Annual Report on Form 20-F of National Bank of Greece S.A. ("National Bank of Greece"); 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements mad

May 7, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-1285516k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by chec

May 4, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

April 30, 2018 NT 20-F

NBG / National Bank of Greece SA NT 20-F

OMB APPROVAL UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING OMB Number: 3235-0058 Expires: October 31, 2018 Estimated average burden hours per response . . . . . . 2.50 SEC FILE NUMBER 001-14960 CUSIP NUMBER ** (Check one): o Form 10-K x Form 20-F o Form 11-K o Form 10-Q o Form 10-D o Form N-SAR o Form N-CSR For Period Ended: Decembe

April 23, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of April, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 30, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark

March 29, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 28, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 19, 2018 6-K

NBG / National Bank of Greece SA PRESS RELEASE FOR BROM UPDATE (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 12, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

6-K 1 a18-808016k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by che

March 8, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2018 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

February 28, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of February, 2018 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

February 2, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of February, 2018 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

January 31, 2018 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of January, 2018 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

December 29, 2017 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 27, 2017 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 4, 2017 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 27, 2017 F-6 POS

As filed with the Securities and Exchange Commission on November 27, 2017 Registration No. 333-207408 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 FORM F-6 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933

` As filed with the Securities and Exchange Commission on November 27, 2017 Registration No.

November 24, 2017 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check ma

November 22, 2017 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 15, 2017 6-K

NBG / National Bank of Greece SA 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 1, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

October 30, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2017, National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

October 11, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

September 1, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of September, 2017 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check m

August 31, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 21, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 4, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2017 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

July 27, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 26, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 5, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 30, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 29, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a17-1594716k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by che

June 29, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 22, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 19, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 14, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 9, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 8, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

May 26, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark wh

May 24, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 15, 2017 EX-4.3

Share Sale and Purchase Agreement between National Bank of Greece S.A. and KBC Bank NV dated December 30, 2016 (incorporated by reference to Exhibit 4.3 to the Annual Report on Form 20-F (File No. 001 14960) filed May 15, 2017)* ¥.

EX-4.3 2 a2232074zex-43.htm EX-4.3 Exhibit 4.3 Execution Version * Certain confidential information contained in this document, marked by asterisks, has been omitted and filed separately with the Securities and Exchange Commission pursuant to Rule 24b-2 promulgated under the Securities Exchange Act of 1934, as amended. 30 December 2016 NATIONAL BANK OF GREECE S.A. KBC BANK NV SHARE SALE AND PURCHA

May 15, 2017 EX-12.1

Date: May 15, 2017 /s/ LEONIDAS FRAGKIADAKIS Leonidas Fragkiadakis Chief Executive Officer

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 12.1 CERTIFICATION I, Leonidas Fragkiadakis, certify that: 1. I have reviewed this Annual Report on Form 20-F of National Bank of Greece S.A. ("National Bank of Greece"); 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the state

May 15, 2017 EX-15.1

May 15, 2017

EXHIBIT 15.1 May 15, 2017 Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-7561 Dear Sirs/Madams: We have read Item 16F of the National Bank of Greece S.A.?s Form 20-F dated May 15, 2017, and we agree with the statements therein, except for the fact that we have no basis on which to agree or disagree with the statements made in the Form 20-F, Item 16F that during each o

May 15, 2017 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 15, 2017 EX-13.1

CERTIFICATION

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 13.1 CERTIFICATION Certification of Chief Executive Officer, Deputy Chief Executive Officer and Group Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. In connection with the Annual Report on Form 20-F of National Bank of Greece S.A. ("National B

May 9, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

April 28, 2017 NT 20-F

National Bank of Greece NT 20-F

OMB APPROVAL UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING OMB Number: 3235-0058 Expires: October 31, 2018 Estimated average burden hours per response . . . . . . 2.50 SEC FILE NUMBER 001-14960 CUSIP NUMBER 633643804** (Check one): o Form 10-K x Form 20-F o Form 11-K o Form 10-Q o Form 10-D o Form N-SAR o Form N-CSR For Period Ended

April 5, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of April, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 31, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark

March 30, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 30, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 16, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 7, 2017 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2017 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

December 30, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 28, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 15, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 28, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 25, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check ma

November 23, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 9, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 4, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2016 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

October 27, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 20, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

September 30, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a16-1930816k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of September, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate b

September 8, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of September, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the re

September 2, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of September, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check m

August 31, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a16-1778416k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by c

August 8, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

July 29, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 25, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 20, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 7, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 5, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 1, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2016 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 30, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2016 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 28, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 23, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 17, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 15, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a16-1340716k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by che

June 14, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 8, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

May 26, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 26, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a16-1223616k.htm 6-K Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices)

May 26, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a16-1229916k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by chec

May 16, 2016 EX-1

An English translation of the Articles of Association of the Bank, as amended with effect from December 2015 (incorporated by reference to Exhibit 1 to the Annual Report on Form 20-F (File No. 001-14960) filed 15 May 2016).

Exhibit 1 ARTICLES OF ASSOCIATION GROUP COMPLIANCE AND CORPORATE GOVERNANCE DIVISION DECEMBER 2015 NATIONAL BANK OF GREECE S.

May 16, 2016 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Use these links to rapidly review the document TABLE OF CONTENTS INDEX TO FINANCIAL STATEMENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 16, 2016 EX-13.1

CERTIFICATION

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 13.1 CERTIFICATION Certification of Chief Executive Officer, Deputy Chief Executive Officer and Group Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. In connection with the Annual Report on Form 20-F of National Bank of Greece S.A. ("National B

May 16, 2016 EX-4.2

Bond Issuance Program of Contingently Convertible Securities, dated December 9, 2015 (incorporated by reference to Exhibit 4.2 to the Annual Report on Form 20-F (File No. 001-14960) filed May 15, 2016).

Exhibit 4.2 Dated 9 December 2015 BOND ISSUANCE PROGRAMME OF NATIONAL BANK OF GREECE S.A. CONTENTS Clause Page 1. DEFINITIONS AND INTERPRETATION 2 2. AMOUNT OF THE BONDS, SUBORDINATION AND COVENANT TO PAY 14 3. FORM OF THE BONDS, TITLE AND TRANSFERS 15 4. REGISTER AND REPLACEMENT CERTIFICATES 16 5. INTEREST 17 6. INTEREST CANCELLATION 18 7. REDEMPTION AND PURCHASE 20 8. COVENANTS 21 9. PAYMENTS 22

May 16, 2016 EX-12.1

Date: May 16, 2016 /s/ LEONIDAS FRAGKIADAKIS Leonidas Fragkiadakis Chief Executive Officer

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 12.1 CERTIFICATION I, Leonidas Fragkiadakis, certify that: 1. I have reviewed this Annual Report on Form 20-F of National Bank of Greece S.A. ("National Bank of Greece"); 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the state

May 16, 2016 EX-4.1

Share Sale and Purchase Agreement between National Bank of Greece S.A. and Qatar National Bank S.A.Q dated December 21, 2015 (incorporated by reference to Exhibit 4.1 to the Annual Report on Form 20-F (File No. 001-14960) filed May 15, 2016)* ¥.

Exhibit 4.1 EXECUTION VERSION December 2015 NATIONAL BANK OF GREECE S.A. QATAR NATIONAL BANK S.A.Q. SHARE SALE AND PURCHASE AGREEMENT Contents Clause Page 1. Sale and Purchase 3 2. Purchase Price 4 3. Subordinated Debt 4 4. Escrow 5 5. Net Asset Adjustment 6 6. No Leakage Undertaking 7 7. Pre-Closing Seller Undertakings 8 8. Conditions to Closing 9 9. Closing 16 10. Material Adverse Effect 16 11.

May 11, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

April 29, 2016 NT 20-F

National Bank of Greece NT 20-F

NT 20-F 1 a16-98581nt20f.htm NT 20-F UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING SEC FILE NUMBER 001-14960 CUSIP NUMBER 633643408** (Check one): o Form 10-K x Form 20-F o Form 11-K o Form 10-Q o Form 10-D o Form N-SAR o Form N-CSR For Period Ended: December 31, 2015 o Transition Report on Form 10-K o Transition Report on Form 20-F

March 18, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark

March 15, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 10, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

February 29, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a16-548316k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of February, 2016 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

February 12, 2016 SC 13G/A

NBG / National Bank of Greece SA / SLS MANAGEMENT LLC Passive Investment

SC 13G/A 1 d7041161sc13g-a1.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* National Bank of Greece S.A. (Name of Issuer) Series A Preference Shares, nominal value of EUR 0.30 per share (Title of Class of Securities) 633643507 (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of

February 3, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of February, 2016 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

January 19, 2016 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of January, 2016 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

December 28, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 28, 2015 15-12B

National Bank of Greece 15-12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number 001-14960 EQNIKH TRAPEZA THS ELLADOS A.E. (Exact name of registrant as speci

December 22, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a15-2537716k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

December 17, 2015 EX-99.25

EX-99.25

EX-99.25 2 ruleprovisionnotice.htm NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES New York Stock Exchange LLC (the 'Exchange' or the 'NYSE') hereby notifies the Securities and Exchange Commission ('SEC') of its intention to remove the entire class of American Depositary Shares (each representing one ordinary share) and the American Depositary Shares, Series A (e

December 17, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a15-2518816k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

December 17, 2015 EX-99.25

EX-99.25

EX-99.25 2 ruleprovisionnotice.htm NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES New York Stock Exchange LLC (the 'Exchange' or the 'NYSE') hereby notifies the Securities and Exchange Commission ('SEC') of its intention to remove the entire class of American Depositary Shares (each representing one ordinary share) and the American Depositary Shares, Series A (e

December 17, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 10, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 9, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a15-2476126k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

December 9, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 8, 2015 EX-99.1

EX-99.1

EX-99.1 2 a15-247021ex99d1.htm EX-99.1 Exhibit 99.1

December 8, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 8, 2015 EX-99.4

GOVERNMENT GAZETTE OF THE HELLENIC REPUBLIC

Exhibit 99.4 GOVERNMENT GAZETTE OF THE HELLENIC REPUBLIC ISSUE A? Bulletin No. 167 7 December 2015 Cabinet Act No. 45 dated 05.12.2015 Implementation of measures provided for in article 6A of Greek law 3864/2010 (Government Gazette Issue A? 119), prior to the provision of capital support by the Hellenic Financial Stability Fund to the credit institution under the name ?National Bank of Greece S.A.

December 8, 2015 EX-99.2

GOVERNMENT GAZETTE OF THE HELLENIC REPUBLIC

Exhibit 99.2 GOVERNMENT GAZETTE OF THE HELLENIC REPUBLIC ISSUE A? Bulletin No. 165 5 December 2015 Cabinet Act No. 44 dated 05.12.2015 Amendment to the Cabinet Act No. 11/11.04.2014 on the ?Provisions on issues pursuant to paragraph 11 of article 6A of Greek law 3864/2010 (Government Gazette, Issue A? 119), as added by virtue of subparagraph A3 of paragraph A of article 2 of Greek law 4254/2014 (G

December 8, 2015 EX-99.3

EX-99.3

EX-99.3 4 a15-247021ex99d3.htm EX-99.3 Exhibit 99.3

December 4, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 4, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

December 1, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 24, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 24, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 19, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 17, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 17, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 16, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 12, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 12, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 9, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check ma

November 9, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 6, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 6, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 3, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 2, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

November 2, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mar

November 2, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 2, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

6-K 1 a15-2214416k.htm 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by

October 30, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 21, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 14, 2015 EX-4

Emmet, Marvin & Martin, LLP Counsellors at Law 120 Broadway New York, New York 10271 (212) 238-3000 (212) 653-1760 Fax: (212) 238-3100 Fax: (212) 653-1730

Writer?s Direct Dial EXHIBIT 4 Emmet, Marvin & Martin, LLP Counsellors at Law 120 Broadway New York, New York 10271 (212) 238-3000 (212) 653-1760 Fax: (212) 238-3100 Fax: (212) 653-1730 http://www.

October 14, 2015 F-6EF

As filed with the Securities and Exchange Commission on October 14, 2015

F-6EF 1 nata526112f6.htm FORM F-6 ` As filed with the Securities and Exchange Commission on October 14, 2015 Registration No. 333- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT under THE SECURITIES ACT OF 1933 For American Depositary Shares of EΘNIKH TPAПEZA THΣ EΛΛAΔOΣ A.E. (Exact name of issuer of deposited securities as specified in its charter) NATIO

October 14, 2015 EX-1

==================================================== NATIONAL BANK OF GREECE S.A. THE BANK OF NEW YORK MELLON As Depositary OWNERS AND BENEFICIAL OWNERS OF AMERICAN DEPOSITARY SHARES DEPOSIT AGREEMENT May 28, 1998 As Amended and Restated as of Octobe

==================================================== NATIONAL BANK OF GREECE S.A. AND THE BANK OF NEW YORK MELLON As Depositary AND OWNERS AND BENEFICIAL OWNERS OF AMERICAN DEPOSITARY SHARES DEPOSIT AGREEMENT May 28, 1998 As Amended and Restated as of October 25, 1999 As Amended and Restated as of December 3, 1999 As Amended and Restated as of December 31, 2001 As Amended and Restated as of Januar

October 13, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 13, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

September 28, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of September, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the re

August 28, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 28, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 24, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 3, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

August 3, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

July 20, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 17, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 16, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 15, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 14, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 9, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 7, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 1, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 29, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 24, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 23, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 5, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

May 29, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 28, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 28, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2015 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark wh

May 26, 2015 F-6 POS

As filed with the Securities and Exchange Commission on May 26, 2015

` As filed with the Securities and Exchange Commission on May 26, 2015 Registration No.

May 20, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 19, 2015 F-6EF

As filed with the Securities and Exchange Commission on May 19, 2015

` As filed with the Securities and Exchange Commission on May 19, 2015 Registration No.

May 19, 2015 EX-1

==================================================== NATIONAL BANK OF GREECE S.A. THE BANK OF NEW YORK MELLON As Depositary OWNERS AND BENEFICIAL OWNERS OF AMERICAN DEPOSITARY SHARES DEPOSIT AGREEMENT May 28, 1998 As Amended and Restated as of Octobe

==================================================== NATIONAL BANK OF GREECE S.A. AND THE BANK OF NEW YORK MELLON As Depositary AND OWNERS AND BENEFICIAL OWNERS OF AMERICAN DEPOSITARY SHARES DEPOSIT AGREEMENT May 28, 1998 As Amended and Restated as of October 25, 1999 As Amended and Restated as of December 3, 1999 As Amended and Restated as of December 31, 2001 As Amended and Restated as of Januar

May 19, 2015 EX-4

Emmet, Marvin & Martin, LLP Counsellors at Law 120 Broadway New York, New York 10271 (212) 238-3000 (212) 653-1760 Fax: (212) 238-3100 Fax: (212) 653-1730

Writer?s Direct Dial EXHIBIT 4 Emmet, Marvin & Martin, LLP Counsellors at Law 120 Broadway New York, New York 10271 (212) 238-3000 (212) 653-1760 Fax: (212) 238-3100 Fax: (212) 653-1730 http://www.

May 18, 2015 EX-13.1

CERTIFICATION

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 13.1 CERTIFICATION Certification of Chief Executive Officer, Deputy Chief Executive Officer and Group Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. In connection with the Annual Report on Form 20-F of National Bank of Greece S.A. ("National B

May 18, 2015 EX-1

ARTICLES OF ASSOCIATION BoD SECRETARIAT & SHAREHOLDER SERVICES DIVISION SHAREHOLDER SERVICES SUB-DIVISION JUNE 2014

Exhibit 1 ARTICLES OF ASSOCIATION BoD SECRETARIAT & SHAREHOLDER SERVICES DIVISION SHAREHOLDER SERVICES SUB-DIVISION JUNE 2014 NATIONAL BANK OF GREECE S.

May 18, 2015 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

20-F 1 a2224735z20-f.htm 20-F Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS 2 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) o REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE

May 18, 2015 EX-15.1

May 15, 2015

EXHIBIT 15.1 May 15, 2015 Securities and Exchange Commission Washington, D.C. 20549 Ladies and Gentlemen: We were previously the independent accountant who was engaged to audit a significant subsidiary of National Bank of Greece S.A (?NBG?), namely Finansbank A.S for the two years ended December 31, 2013. Deloitte Hadjipavlou Sofianos and Cambanis S.A continue to be the principal accountants of th

May 18, 2015 EX-12.1

Date: May 15, 2015 /s/ LEONIDAS FRAGKIADAKIS Leonidas Fragkiadakis Chief Executive Officer

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 12.1 CERTIFICATION I, Leonidas Fragkiadakis, certify that: 1. I have reviewed this Annual Report on Form 20-F of National Bank of Greece S.A. ("National Bank of Greece"); 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the state

April 30, 2015 NT 20-F

National Bank of Greece NT 20-F

OMB APPROVAL UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING OMB Number: 3235-0058 Expires: August 31, 2015 Estimated average burden hours per response . . . . . . 2.50 SEC FILE NUMBER 001-14960 CUSIP NUMBER 633643408** (Check one): o Form 10-K x Form 20-F o Form 11-K o Form 10-Q o Form 10-D o Form N-SAR o Form N-CSR For Period Ended:

March 31, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark

March 23, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 23, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 20, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 12, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

March 11, 2015 6-K

National Bank of Greece 6-K (Current Report of Foreign Issuer)

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of March, 2015 National Bank of Greece S.A. (Translation of registrant?s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

February 17, 2015 SC 13G

NBG / National Bank of Greece SA / SLS MANAGEMENT LLC Passive Investment

SC 13G 1 d637290013-g.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* National Bank of Greece S.A. (Name of Issuer) Series A Preference Shares, nominal value of EUR 0.30 per share (Title of Class of Securities) 633643507 (CUSIP Number) December 31, 2014 (Date of Event Which Requires Filing of this St

December 23, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of December, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 28, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check ma

November 13, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

November 6, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of November, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the reg

October 27, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 27, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 24, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 22, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

October 17, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of October, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regi

September 29, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of September, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the re

August 29, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark

August 28, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of August, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regis

July 28, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

July 21, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of July, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 30, 2014 6-K

NBG / National Bank of Greece SA 6-K - Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

June 6, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of June, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registr

May 30, 2014 6-K

Current Report of Foreign Issuer - 6-K

Table of Contents FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark wh

May 28, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 19, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 15, 2014 EX-13.1

CERTIFICATION

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 13.1 CERTIFICATION Certification of Chief Executive Officer, Deputy Chief Executive Officer and Group Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. In connection with the Annual Report on Form 20-F of National Bank of Greece S.A. ("National B

May 15, 2014 EX-1

NATIONAL BANK OF GREECE S.A. ARTICLES OF ASSOCIATION BoD SECRETARIAT & SHAREHOLDER SERVICES DIVISION SHAREHOLDER SERVICES SUB-DIVISION MAY 2014

Exhibit 1 NATIONAL BANK OF GREECE S.A. ARTICLES OF ASSOCIATION BoD SECRETARIAT & SHAREHOLDER SERVICES DIVISION SHAREHOLDER SERVICES SUB-DIVISION MAY 2014 NATIONAL BANK OF GREECE S.A. PREAMBLE These articles of association are a codification of the provisions of National Bank of Greece S.A.’s Articles of Association, approved by Trade Minister’s decision No 22883 of 19 March 1953, promulgated in Go

May 15, 2014 20-F

- 20-F

Use these links to rapidly review the document TABLE OF CONTENTS INDEX TO FINANCIAL STATEMENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 15, 2014 EX-12.1

Date: May 15, 2014 /s/ ALEXANDROS TOURKOLIAS Alexandros Tourkolias Chief Executive Officer

QuickLinks - Click here to rapidly navigate through this document EXHIBIT 12.1 CERTIFICATION I, Alexandros Tourkolias, certify that: 1. I have reviewed this annual report on Form 20-F of National Bank of Greece S.A. ("National Bank of Greece"); 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the state

May 14, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 13, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 9, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

May 6, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of May, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the registra

April 30, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of April, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

April 30, 2014 NT 20-F

- NT 20-F

OMB APPROVAL UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING OMB Number: 33235-0058 Expires: August 31, 2015 Estimated average burden hours per response . . . . . . 2.50 SEC FILE NUMBER 001-14960 CUSIP NUMBER 633643408** (Check one): o Form 10-K x Form 20-F o Form 11-K o Form 10-Q o Form 10-D o Form N-SAR o Form N-CSR For Period Ended

April 28, 2014 6-K

Current Report of Foreign Issuer - 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to rule 13a-16 or 15d-16 of The Securities Exchange Act of 1934 For the month of April, 2014 National Bank of Greece S.A. (Translation of registrant’s name into English) 86 Eolou Street, 10232 Athens, Greece (Address of principal executive offices) [Indicate by check mark whether the regist

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