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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

42nd Floor, 8 Canada Square, London E14 5HQ, England

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F).

Form 20-F X Form 40-F

(Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934).

(If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- ).

Notification of Transactions of Persons Discharging Managerial Responsibilities (“PDMRs”)

During 2016 and 2017, awards of US$0.50 ordinary shares (the "Shares") in HSBC Holdings plc were granted under the HSBC fixed pay allowance arrangements (the "Awards"). The Awards comprised part of the relevant employees' fixed remuneration for the relevant period. The 2017 Awards will be released in five equal annual instalments starting from March 2018. Instalments from the 2016 Awards were also released in March 2018.

On 19 March 2018 the following Shares were sold in London.

Name	Shares disposed	Price
Samir Assaf	27,849	£7.0079
Patrick Burke	2,270	£7.0418
Antonio Simoes	1,873	£7.0079

On 21 March 2018, Iain Mackay exercised and sold 3,469 Shares under the HSBC Savings-Related Share Option Plan. The Shares were sold in London at £6.9640.

The following disclosures are made in accordance with Article 19 of the EU Market Abuse Regulation 596/2014.

1 - Details of the person discharging managerial responsibilities / person closely associated

Name of natural person			Iain Mackay

2 - Reason for the notification

Position/status			Group Finance Director

Initial notification/amendment			Initial Notification

3 - Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

Full name of the entity			HSBC Holdings PLC

Legal Entity Identifier code			MLU0ZO3ML4LN2LL2TL39

4 - Details of the transaction(s)
Transaction(s) summary table

	Date of Transaction	Financial Instrument		Identification Code	Place of Transaction	Currency
	2018-03-21	Ordinary shares of US$0.50 each		GB0005405286	London Stock Exchange, Main Market (XLON)	GBP – British Pound
	Nature of Transaction:			Price	Volume	Total
	Acquisition			£5.19	3,469	£17,999.60
		Aggregated		£5.189	3,469	£17,999.60


	Date of Transaction	Financial Instrument		Identification Code	Place of Transaction	Currency
	2018-03-21	Ordinary Shares of US$0.50 each		GB0005405286	London Stock Exchange, Main Market (XLON)	GBP – British Pound
	Nature of Transaction:			Price	Volume	Total
	Disposal			£6.96	3,469	£24,158.12
		Aggregated		£6.964	3,469	£24,158,12

1 - Details of the person discharging managerial responsibilities / person closely associated

Name of natural person			Samir Assaf

2 - Reason for the notification

Position/status			Chief Executive, Global Banking and Markets

Initial notification/amendment			Initial Notification

3 - Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

Full name of the entity			HSBC Holdings plc

Legal Entity Identifier code			MLU0ZO3ML4LN2LL2TL39

4 - Details of the transaction(s)
Transaction(s) summary table

	Date of Transaction	Financial Instrument		Identification Code	Place of Transaction	Currency
	2018-03-19	Ordinary shares of US$0.50 each		GB0005405286	London Stock Exchange, Main Market (XLON)	GBP – British Pound
	Nature of Transaction:			Price	Volume	Total
	Disposal			£7.01	27,849	£195,163.01
		Aggregated		£7.008	27,849	£195,163.01

1 - Details of the person discharging managerial responsibilities / person closely associated

Name of natural person			Patrick Burke

2 - Reason for the notification

Position/status			President and Chief Executive of HSBC US

Initial notification/amendment			Initial Notification

3 - Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

Full name of the entity			HSBC Holdings plc

Legal Entity Identifier code			MLU0ZO3ML4LN2LL2TL39

4 - Details of the transaction(s)
Transaction(s) summary table

	Date of Transaction	Financial Instrument		Identification Code	Place of Transaction	Currency
	2018-03-19	Ordinary shares of US$0.50 each		GB0005405286	London Stock Exchange, Main Market (XLON)	GBP - British Pound
	Nature of Transaction:			Price	Volume	Total
				£7.04	2,270	£15,984.89
	Disposal	Aggregated		£7.042	2,270	£15,984.89

1 - Details of the person discharging managerial responsibilities / person closely associated

Name of natural person			Antonio Simoes

2 - Reason for the notification

Position/status			Chief Executive, HSBC Bank plc

Initial notification/amendment			Initial Notification

3 - Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

Full name of the entity			HSBC Holdings plc

Legal Entity Identifier code			MLU0ZO3ML4LN2LL2TL39

4 - Details of the transaction(s)
Transaction(s) summary table

	Date of Transaction	Financial Instrument		Identification Code	Place of Transaction	Currency
	2018-03-19	Ordinary shares of US$0.50 each		GB0005405286	London Stock Exchange, Main Market (XLON)	GBP - British Pound
	Nature of Transaction:			Price	Volume	Total
	Disposal			£7.01	1,873	£13,125.80
		Aggregated		£7.008	1,873	£13,125.80

For any queries related to this notification please contact:

Shareholder Services

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

HSBC Holdings plc

	By:
	Name: Ben J S Mathews
	Title: Group Company Secretary

	Date: 21 March 2018