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Equillium, Inc.

EQ
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001746466

No open-market purchases or sales by Equillium, Inc. insiders were filed in the last 90 days; 60 institutions reported holding it in 13F filings for Q2 2026, worth $133.4M in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Equillium, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Equillium, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Equillium, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Connelly StephenPresident and CSO762,025Jun 5, 20262
Zedelmayer ChristineSr. Vice President and COO62,586Jun 5, 20269
Demski Martha JDirector–May 29, 20261
Bradbury DanielCHAIRMAN–May 29, 20261
Pruzanski MarkDirector–May 29, 20261
Troupin BarbaraDirector–May 29, 20261
McDermott Charles DouglasDirector–May 29, 20261
Tom PennyPrincipal Accounting Officer0May 29, 20262
Steel Bruce D.Chief Executive Officer–Jan 9, 20261
Manian Bala SDirector–May 23, 20250
Colabuono PeterDirector–May 23, 20250
Keyes Jason AChief Financial Officer37,720IndirectFeb 19, 20250
Xu Yu (Katherine)Director–May 23, 20240
Rothman JoelChief Development Officer58,150Jan 3, 20240

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jun 5, 2026 (view filing)Jun 5Same dayZedelmayer ChristineSr. Vice President and COOSSale−14.6K$2.93−$42.7K−18.9%62.6K after10b5-1
Jun 5, 2026 (view filing)Jun 4-51 dayConnelly StephenPresident and CSOSSale−231.0K$3.13−$723.1K−23.3%762.0K after2 lots
May 29, 2026 (view filing)May 281 dayTom PennyPrincipal Accounting OfficerSSale−65.0K$2.95−$191.8K−100.0%0 after10b5-1
May 29, 2026 (view filing)May 27-282 daysZedelmayer ChristineSr. Vice President and COOSSale−95.8K$2.79−$267.2K−60.5%62.6K after4 lots10b5-1
Mar 16, 2026 (view filing)Mar 133 daysZedelmayer ChristineSr. Vice President and COOSSale−120.3K$2.50−$300.8K−65.8%62.6K after10b5-1
Mar 11, 2026 (view filing)Feb 1920 daysZedelmayer ChristineSr. Vice President and COOSSale−185.9K$1.76−$327.9K−67.0%91.4K afterAmended2 lots10b5-1
Mar 11, 2026 (view filing)Mar 92 daysZedelmayer ChristineSr. Vice President and COOSSale−181.2K$2.00−$362.4K−74.3%62.6K after10b5-1
Jan 9, 2026 (view filing)Jan 81 dayTom PennyPrincipal Accounting OfficerSSale−6.53K$1.29−$8.43K−100.0%0 after10b5-1
Dec 23, 2025 (view filing)Dec 23Same dayZedelmayer ChristineSr. Vice President and COOSSale−100.0K$1.50−$150.0K−52.2%91.4K after10b5-1
Dec 15, 2025 (view filing)Dec 12-153 daysZedelmayer ChristineSr. Vice President and COOSSale−35.7K$1.33−$47.5K−28.1%91.4K after2 lots10b5-1
Nov 25, 2025 (view filing)Nov 25Same dayZedelmayer ChristineSr. Vice President and COOSSale−8.10K$0.9504−$7.70K−6.0%127.1K after2 lots10b5-1
Jan 24, 2025 (view filing)Jan 231 dayKeyes Jason AChief Financial OfficerSSale−10.0K$0.65−$6.50K−21.0%37.7K after10b5-1
Nov 15, 2024 (view filing)Nov 141 dayKeyes Jason AChief Financial OfficerSSale−10.0K$0.70−$7.00K−17.3%47.7K after10b5-1
Oct 30, 2024 (view filing)Oct 282 daysZedelmayer ChristineSr. Vice President and COOSSale−15.0K$1.25−$18.8K−10.0%135.2K after10b5-1
Oct 29, 2024 (view filing)Oct 25-284 daysTom PennyPrincipal Accounting OfficerSSale−3.52K$1.25−$4.40K−35.0%6.53K after2 lots10b5-1
Sep 27, 2024 (view filing)Sep 261 dayKeyes Jason AChief Financial OfficerSSale−10.0K$0.81−$8.10K−14.8%57.7K after10b5-1
Sep 17, 2024 (view filing)Sep 161 dayTom PennyPrincipal Accounting OfficerSSale−38.8K$0.85−$33.0K−79.4%10.1K after10b5-1
Jul 18, 2024 (view filing)Jul 162 daysKeyes Jason AChief Financial OfficerSSale−10.0K$0.87−$8.70K−12.9%67.7K after10b5-1
Aug 30, 2022 (view filing)Aug 291 dayKeyes Jason AChief Financial OfficerSSale−7.00K$2.83−$19.8K−8.3%77.7K after
Jun 6, 2022 (view filing)Jun 6Same dayKeyes Jason AChief Financial OfficerSSale−5.00K$2.52−$12.6K−5.6%84.7K after
Apr 5, 2022 (view filing)Apr 41 dayKeyes Jason AChief Financial OfficerSSale−8.00K$3.18−$25.4K−8.2%89.7K after
Dec 3, 2021 (view filing)Dec 12 daysKeyes Jason AChief Financial OfficerSSale−5.00K$5.08−$25.4K−4.9%97.7K after
Nov 17, 2021 (view filing)Nov 161 dayZedelmayer ChristineSr. Vice President and COOSSale−11.4K$5.49−$62.8K−10.0%102.4K after2 lots
Oct 7, 2021 (view filing)Oct 61 dayConnelly StephenChief Scientific OfficerSSale−8.09K$7.01−$56.7K−0.8%993.0K after2 lots
Sep 29, 2021 (view filing)Sep 272 daysKeyes Jason AChief Financial OfficerSSale−8.00K$6.74−$53.9K−7.2%102.7K after
Jul 28, 2021 (view filing)Jul 271 dayKeyes Jason AChief Financial OfficerSSale−5.00K$5.72−$28.6K−4.3%110.7K after