EQ (Equillium, Inc. Common Stock)
Insider Trading Activity
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.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-05 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2026-06-05 | Stephen Connelly | President and CSO | Sell | — | — |
| 2026-05-29 | MARTHA J DEMSKI | Director | A | — | — |
| 2026-05-29 | Barbara Troupin | Director | A | — | — |
| 2026-05-29 | Charles Douglas McDermott | Director | A | — | — |
| 2026-05-29 | DANIEL BRADBURY | CHAIRMAN | A | — | — |
| 2026-05-29 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2026-05-29 | Penny Tom | Principal Accounting Officer | MIXED | — | — |
| 2026-05-29 | Mark Pruzanski | Director | A | — | — |
| 2026-03-16 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2026-03-11 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2026-03-11 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2026-02-23 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2026-01-09 | Stephen Connelly | President and CSO | A | — | — |
| 2026-01-09 | Bruce D. Steel | Chief Executive Officer | A | — | — |
| 2026-01-09 | Christine Zedelmayer | Sr. Vice President and COO | A | — | — |
| 2026-01-09 | Penny Tom | Principal Accounting Officer | Sell | — | — |
| 2025-12-23 | Christine Zedelmayer | Sr. Vice President and COO | MIXED | — | — |
| 2025-12-15 | Christine Zedelmayer | Sr. Vice President and COO | Sell | — | — |
| 2025-11-25 | Christine Zedelmayer | Sr. Vice President and COO | Sell | — | — |
| 2025-09-03 | Bruce D. Steel | President and CEO | A | — | — |
| 2025-09-03 | Christine Zedelmayer | Sr. Vice President and COO | A | — | — |
| 2025-09-03 | Penny Tom | Principal Accounting Officer | A | — | — |
| 2025-09-03 | Stephen Connelly | Chief Scientific Officer | A | — | — |
| 2025-05-23 | BALA S MANIAN | Director | A | — | — |
| 2025-05-23 | MARTHA J DEMSKI | Director | A | — | — |
| 2025-05-23 | Barbara Troupin | Director | A | — | — |
| 2025-05-23 | Peter Colabuono | Director | A | — | — |
| 2025-05-23 | Charles Douglas McDermott | Director | A | — | — |
| 2025-05-23 | Mark Pruzanski | Director | A | — | — |
| 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 | — | — |
| 2025-01-06 | Christine Zedelmayer | Sr. Vice President and COO | A | — | — |
| 2025-01-06 | DANIEL BRADBURY | EXECUTIVE CHAIRMAN | A | — | — |
| 2025-01-06 | Bruce D. Steel | President and CEO | A | — | — |
| 2025-01-06 | Jason A Keyes | Chief Financial Officer | A | — | — |
| 2025-01-06 | Penny Tom | Principal Accounting Officer | A | — | — |
| 2025-01-06 | Stephen Connelly | Chief Scientific Officer | A | — | — |
| 2024-12-12 | Peter Colabuono | Director | A | — | — |
| 2024-11-15 | Jason A Keyes | Chief Financial Officer | Sell | — | — |
| 2024-10-30 | Christine Zedelmayer | Sr. Vice President and COO | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | CHAIRMAN | 2,969,596 | — |
| — | 10%+ Owner | 2,316,134 | — |
| — | President and CSO | 762,025 | — |
| — | Chief Executive Officer | 479,495 | — |
| — | Chief Financial Officer | 126,633 | — |
| — | Principal Accounting Officer | 65,000 | — |
| — | Sr. Vice President and COO | 62,586 | — |
| — | Chief Development Officer | 58,150 | — |
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.