David Bourdon - 09 Mar 2026 Form 4 Insider Report for LifeStance Health Group, Inc. (LFST)

Role: Chief Executive Officer, Director
Signature: By: /s/ Ryan Pardo, Attorney-in-Fact
Issuer symbol: LFST
Transactions as of: 09 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 11 Mar 2026, 19:03:37 UTC
Previous filing: 09 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Bourdon David	Chief Executive Officer, Director	C/O LIFESTANCE HEALTH GROUP, INC., 4800 N. SCOTTSDALE ROAD, SUITE 2500, SCOTTSDALE	By: /s/ Ryan Pardo, Attorney-in-Fact	11 Mar 2026	0001823690

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LFST	Common Stock	Tax liability		-10,884	-0.89%	$6.91^*	1,207,201	09 Mar 2026	Direct	F1
transaction	LFST	Common Stock	Award		+122,994	+10%	$0.000000^*	1,330,195	09 Mar 2026	Direct	F2
transaction	LFST	Common Stock	Tax liability		-51,474	-3.9%	$6.91^*	1,278,721	09 Mar 2026	Direct	F3
transaction	LFST	Common Stock	Award		+205,550	+16%	$0.000000^*	1,484,271	09 Mar 2026	Direct	F4
transaction	LFST	Common Stock	Tax liability		-86,024	-5.8%	$6.91^*	1,398,247	09 Mar 2026	Direct	F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations in connection with the net settlement of restricted stock units ("RSUs") that vested on March 9, 2026. The shares withheld represent a reduction of shares issued to the Reporting Person upon settlement of vested RSUs and do not constitute any open-market sale.
F2	Represents performance-based restricted stock units ("PSUs") previously granted to the Reporting Person on March 6, 2025, which vested on March 9, 2026.
F3	Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations in connection with the net settlement of PSUs that vested on March 9, 2026. The shares withheld represent a reduction of shares issued to the Reporting Person upon settlement of vested PSUs and do not constitute any open-market sale.
F4	Represents PSUs previously granted to the Reporting Person on February 27, 2025, which vested on March 9, 2026.
F5	Represents the number of shares withheld by the Issuer to satisfy tax withholding obligations in connection with the net settlement of PSUs that vested on March 9, 2026. The shares withheld represent a reduction of shares issued to the Reporting Person upon settlement of vested PSUs and do not constitute any open-market sale.