Christine Zedelmayer - 19 Feb 2026 Form 4 Insider Report for Equillium, Inc. (EQ)

Role
Sr. Vice President and COO
Signature
/s/ Christine Zedelmayer
Issuer symbol
EQ
Transactions as of
19 Feb 2026
Net transactions value
-$186,355
Form type
4
Filing time
23 Feb 2026, 12:52:51 UTC
Previous filing
09 Jan 2026
Next filing
11 Mar 2026
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/ Christine Zedelmayer 23 Feb 2026 0001797818
This filing has been restated, see here for the amended filing

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction EQ Common Stock Options Exercise $85,859 +109,375 +57% $0.7850 300,819 19 Feb 2026 Direct
transaction EQ Common Stock Sale $194,841 -109,375 -36% $1.78 191,444 19 Feb 2026 Direct F1
transaction EQ Common Stock Options Exercise $55,890 +76,562 +40% $0.7300 268,006 19 Feb 2026 Direct
transaction EQ Common Stock Sale $133,264 -76,562 -29% $1.74 191,444 19 Feb 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) Options Exercise $0 -109,375 -88% $0.000000 15,625 19 Feb 2026 Common Stock 109,375 $0.7850 Direct F2
transaction EQ Employee Stock Option (right to buy) Options Exercise $0 -76,562 -44% $0.000000 98,438 19 Feb 2026 Common Stock 76,562 $0.7300 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 sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025.
F2 Twenty-five percent of the shares subject to the option vested on the first anniversary of the vesting commencement date, and the remainder vests in 36 equal monthly installments thereafter for the following three years.