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

Signature
/s/ Christine Zedelmayer
Issuer symbol
EQ
Transactions as of
19 Feb 2026
Net transactions value
-$328,104
Form type
4/A - Amendment
Filing time
11 Mar 2026, 20:25:15 UTC
Date Of Original Report
23 Feb 2026
Previous filing
09 Jan 2026
Next filing
11 Mar 2026

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 10 Mar 2026 0001797818

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction EQ Common Stock Options Exercise +109,375 +120% $0.7850* 200,819 19 Feb 2026 Direct
transaction EQ Common Stock Sale $194,841 -109,375 -54% $1.78 91,444 19 Feb 2026 Direct F1
transaction EQ Common Stock Options Exercise +76,562 +84% $0.7300* 168,006 19 Feb 2026 Direct
transaction EQ Common Stock Sale $133,264 -76,562 -46% $1.74 91,444 19 Feb 2026 Direct F1
* 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.

Remarks:

Due solely to a scrivener's error, the number of shares beneficially owned was misreported in Table I, Column 5 of a prior Form 4 filed with the Securities and Exchange Commission on February 23, 2026, which overreported the amount of beneficially owned shares by 100,000 shares.