EQ · Insider Trading
Equillium, Inc. Common Stock
Every open-market purchase and sale reported by EQ officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-05 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | −$31.29K |
| 2026-06-05 | Stephen Connelly | President and CSO | Sell | −230,975 | −$723.83K |
| 2026-05-29 | Martha J Demski | Director | A | +70,000 deriv. | — |
| 2026-05-29 | Barbara Troupin | Director | A | +70,000 deriv. | — |
| 2026-05-29 | Charles Douglas McDermott | Director | A | +70,000 deriv. | — |
| 2026-05-29 | Daniel Bradbury | CHAIRMAN | A | +70,000 deriv. | — |
| 2026-05-29 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | −$193.26K |
| 2026-05-29 | Penny Tom | Principal Accounting Officer | MIXED | — | −$140.72K |
| 2026-05-29 | Mark Pruzanski | Director | A | +70,000 deriv. | — |
| 2026-03-16 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | −$206.37K |
| 2026-03-11 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | −$186.35K |
| 2026-03-11 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | −28,858 | −$242.83K |
| 2026-02-23 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | −$186.35K |
| 2026-01-09 | Stephen Connelly | President and CSO | A | +1,150,000 deriv. | — |
| 2026-01-09 | Bruce D. Steel | Chief Executive Officer | A | +1,750,000 deriv. | — |
| 2026-01-09 | Christine Zedelmayer | Sr. Vice President and COO | A | +500,000 deriv. | — |
| 2026-01-09 | Penny Tom | Principal Accounting Officer | Sell | −6,533 | −$8.43K |
| 2025-12-23 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | −$71.50K |
| 2025-12-15 | Christine Zedelmayer | Sr. Vice President and COO | Sell | −35,704 | −$47.49K |
| 2025-11-25 | Christine Zedelmayer | Sr. Vice President and COO | Sell | −8,098 | −$7.70K |
| 2025-09-03 | Bruce D. Steel | President and CEO | A | +1,695,000 deriv. | — |
| 2025-09-03 | Christine Zedelmayer | Sr. Vice President and COO | A | +725,000 deriv. | — |
| 2025-09-03 | Penny Tom | Principal Accounting Officer | A | +525,000 deriv. | — |
| 2025-09-03 | Stephen Connelly | Chief Scientific Officer | A | +1,025,000 deriv. | — |
| 2025-05-23 | Bala S Manian | Director | A | +20,000 deriv. | — |
| 2025-05-23 | Martha J Demski | Director | A | +20,000 deriv. | — |
| 2025-05-23 | Barbara Troupin | Director | A | +20,000 deriv. | — |
| 2025-05-23 | Peter Colabuono | Director | A | +20,000 deriv. | — |
| 2025-05-23 | Charles Douglas McDermott | Director | A | +20,000 deriv. | — |
| 2025-05-23 | Mark Pruzanski | Director | A | +20,000 deriv. | — |
| 2025-02-19 | Martha J Demski | Director | MIXED | — | — |
| 2025-02-19 | Daniel Bradbury | EXECUTIVE CHAIRMAN | MIXED | — | — |
| 2025-02-19 | Barbara Troupin | Director | MIXED | — | — |
| 2025-02-19 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2025-02-19 | Jason A Keyes | Chief Financial Officer | MIXED | — | — |
| 2025-02-19 | Bala S Manian | Director | MIXED | — | — |
| 2025-02-19 | Penny Tom | Principal Accounting Officer | MIXED | — | — |
| 2025-02-19 | Stephen Connelly | Chief Scientific Officer | MIXED | — | — |
| 2025-02-19 | Bruce D. Steel | President and CEO | MIXED | — | — |
| 2025-02-19 | Mark Pruzanski | Director | MIXED | — | — |
| 2025-01-24 | Jason A Keyes | Chief Financial Officer | Sell | −10,000 | −$6.50K |
| 2025-01-06 | Christine Zedelmayer | Sr. Vice President and COO | A | +175,000 deriv. | — |
| 2025-01-06 | Daniel Bradbury | EXECUTIVE CHAIRMAN | A | +50,000 deriv. | — |
| 2025-01-06 | Bruce D. Steel | President and CEO | A | +410,000 deriv. | — |
| 2025-01-06 | Jason A Keyes | Chief Financial Officer | A | +15,000 | +$8.10K |
| 2025-01-06 | Penny Tom | Principal Accounting Officer | A | +125,000 deriv. | — |
| 2025-01-06 | Stephen Connelly | Chief Scientific Officer | A | +175,000 deriv. | — |
| 2024-12-12 | Peter Colabuono | Director | A | +40,000 deriv. | — |
| 2024-11-15 | Jason A Keyes | Chief Financial Officer | Sell | −10,000 | −$7.00K |
| 2024-10-30 | Christine Zedelmayer | Sr. Vice President and COO | Sell | −15,000 | −$18.75K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Daniel Bradbury | CHAIRMAN | 2,969,596 | $3.71M |
| Stephen Connelly | President and CSO | 762,025 | $952.53K |
| Bruce D. Steel | Chief Executive Officer | 479,495 | $599.37K |
| Jason A Keyes | Chief Financial Officer | 126,633 | $158.29K |
| Penny Tom | Principal Accounting Officer | 65,000 | $81.25K |
| Christine Zedelmayer | Sr. Vice President and COO | 62,586 | $78.23K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the EQ quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.