Penny Tom - Aug 29, 2025 Form 4 Insider Report for Equillium, Inc. (EQ)

Role: Principal Accounting Officer
Signature: /s/ Penny Tom
Stock symbol: EQ
Transactions as of: Aug 29, 2025
Transactions value $: $0
Form type: 4
Date filed: 9/3/2025, 05:02 PM
Previous filing: Feb 19, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Tom Penny	Principal Accounting Officer	2223 AVENIDA DE LA PLAYA, SUITE 105, LA JOLLA	/s/ Penny Tom	2025-09-02	0002012180

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	EQ	Employee Stock Option (right to buy)	Award	$0	+525K		$0.00	525K	Aug 29, 2025	Common Stock	525K	$1.74	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Twenty-five percent of the shares subject to the option vests on the first anniversary of the vesting commencement date, and the remainder vests in 36 equal monthly installments thereafter for the following three years.