Equillium, Inc.·4

Jun 5, 4:42 PM ET

Zedelmayer Christine 4

4 · Equillium, Inc. · Filed Jun 5, 2026

Research Summary

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Equillium (EQ) SVP/COO Christine Zedelmayer Sells Shares After Option Exercise

What Happened

  • Christine Zedelmayer, Senior Vice President and COO of Equillium (EQ), exercised options for 14,584 shares at a strike of $0.79 per share (cost $11,448) on 2026-06-05 and sold those 14,584 shares the same day in an open-market sale. The sale generated gross proceeds of about $42,737 (weighted average price $2.93), implying roughly $31,289 in proceeds above the exercise cost before fees and taxes. This was a sale (not a new purchase).

Key Details

  • Transaction date: 2026-06-05.
  • Exercise: 14,584 shares exercised at $0.79/share; cash paid $11,448.
  • Sale: 14,584 shares sold, weighted-average price $2.93; gross proceeds $42,737 (sales executed at $2.91–$2.95 per share).
  • Footnote: The sale was effected under a Rule 10b5-1 trading plan adopted by the reporting person on August 27, 2025.
  • Vesting note: The option vests 25% after one year, then monthly over the next three years (36 monthly installments).
  • The Form 4 shows a derivative entry at $0.00 related to the option conversion/settlement (administrative reporting of the exercised derivative).
  • Shares owned after the transaction are not specified in the provided filing excerpt.
  • Filing: Report filed on 2026-06-05 (timely).

Context

  • This appears to be an exercise followed by an immediate sale (common cashless exercise/settlement behavior) and was executed under a pre-established 10b5-1 plan, which typically schedules sales in advance. Such insider sales are often routine and do not by themselves indicate a change in the executive’s view of the company.

Insider Transaction Report

Form 4
Period: 2026-06-05
Zedelmayer Christine
Sr. Vice President and COO
Transactions
  • Exercise/Conversion

    Common Stock

    2026-06-05$0.79/sh+14,584$11,44877,170 total
  • Sale

    Common Stock

    [F1][F2]
    2026-06-05$2.93/sh14,584$42,73762,586 total
  • Exercise/Conversion

    Employee Stock Option (right to buy)

    [F3]
    2026-06-0514,58425,521 total
    Exercise: $0.79Exp: 2033-01-02Common Stock (14,584 underlying)
Footnotes (3)
  • [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]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.91 to $2.95, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
  • [F3]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.
Signature
/s/ Christine Zedelmayer|2026-06-05

Documents

1 file
  • 4
    form4-06052026_080654.xmlPrimary