Penny Tom - 07 Jan 2026 Form 4 Insider Report for Equillium, Inc. (EQ)

Signature
/s/ Penny Tom
Issuer symbol
EQ
Transactions as of
07 Jan 2026
Net transactions value
-$8,428
Form type
4
Filing time
09 Jan 2026, 17:37:11 UTC
Previous filing
03 Sep 2025

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 09 Jan 2026 0002012180

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction EQ Common Stock Sale $8,428 -6,533 -100% $1.29 0 08 Jan 2026 Direct F1

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 +450,000 $0.000000 450,000 07 Jan 2026 Common Stock 450,000 $1.31 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 10, 2025.
F2 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.