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Equillium, Inc.

For the period ended Sep 30, 2025. Filed Nov 13, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 13, 2025

EQ$1.51+13.5%Stored close · as of Nov 6, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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OTHER INFORMATION

Item 5. Other Information

Trading Arrangements

During the three-months ended September 30, 2025, an officer (as defined in Rule 16a-1(f) under the Exchange Act) adopted a contract, instruction or written plan for the sale of our securities set forth in the table below:

Type of Trading Arrangement · Total Sharesof Common
Name and Position · Action · Adoption/TerminationDate · Rule10b5-1(1) · Non-Rule10b5-1(2) · Stock to beSold · Expiration Date
Christine Zedelmayer, Chief Operating OfficerAdoption(3)August 27, 2025X801,173August 27, 2026

(1) Contract, instruction or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act.

(2) “Non-Rule 10b5-1 trading arrangement” as defined in Item 408(c) of Regulation S-K under the Exchange Act.

(3)Represents the adoption of a written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) adopted on December 12, 2023.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.