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

Role: Sr. Vice President and COO
Signature: /s/ Daniel M. Bradbury, Attorney-in-Fact
Issuer symbol: EQ
Transactions as of: 29 Aug 2025
Transactions value $: $0
Form type: 4
Filing time: 03 Sep 2025, 17:00:37 UTC
Previous filing: 19 Feb 2025
Next filing: 25 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Zedelmayer Christine	Sr. Vice President and COO	2223 AVENIDA DE LA PLAYA, SUITE 105, LA JOLLA	/s/ Daniel M. Bradbury, Attorney-in-Fact	02 Sep 2025	0001797818

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	+725K		$0.00	725K	29 Aug 2025	Common Stock	725K	$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.