Timothy K. Lu - 09 Mar 2026 Form 4 Insider Report for Senti Biosciences, Inc. (SNTI)

Role: CEO, Director
Signature: /s/ Robert Cutler, attorney-in-fact
Issuer symbol: SNTI
Transactions as of: 09 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 11 Mar 2026, 16:01:30 UTC
Previous filing: 03 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lu Timothy K	CEO, Director	C/O SENTI BIOSCIENCES, INC., 2 CORPORATE DRIVE FIRST FLOOR, SOUTH SAN FRANCISCO	/s/ Robert Cutler, attorney-in-fact	09 Mar 2026	0001852301

Transactions Table

Type	Sym	Class	Transaction	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SNTI	Common Stock	Tax liability	-80,666	-11%	$0.000000^*	639,583	09 Mar 2026	Direct	F1
holding	SNTI	Common Stock					52,839	09 Mar 2026	By spouse
holding	SNTI	Common Stock					52,839	09 Mar 2026	See footnote	F2

* 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 of common stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of certain time-based restricted stock unit awards and does not represent an open market sale.
F2	The shares are held by Luminen Services, LLC, as trustee of the Luminen Trust, of which the reporting person is the settlor. The reporting person disclaims Section 16 beneficial ownership of the securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed to be an admission that he has beneficial ownership of such shares for Section 16 or any other purpose.

Content

Represents the number of shares of common stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of certain time-based restricted stock unit awards and does not represent an open market sale.

The shares are held by Luminen Services, LLC, as trustee of the Luminen Trust, of which the reporting person is the settlor. The reporting person disclaims Section 16 beneficial ownership of the securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed to be an admission that he has beneficial ownership of such shares for Section 16 or any other purpose.