ATYR · Insider Trading
aTyr Pharma, Inc. Common Stock
Every open-market purchase and sale reported by ATYR 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 |
|---|---|---|---|---|---|
| 2026-10-01 | Brandon Yaras | Chief Financial Officer | A | +410,000 deriv. | — |
| 2026-05-28 | Paul Schimmel | Director | Buy | +100,000 | +$49.63K |
| 2026-05-13 | Jane A Gross | Director | A | +50,000 deriv. | — |
| 2026-05-13 | Sara Zaknoen | Director | A | +50,000 deriv. | — |
| 2026-05-13 | Svetlana Lucas | Director | A | +50,000 deriv. | — |
| 2026-05-13 | Paul Schimmel | Director | A | +50,000 deriv. | — |
| 2026-05-13 | Timothy Coughlin | Director | A | +50,000 deriv. | — |
| 2026-05-13 | Eric Benevich | Director | A | +50,000 deriv. | — |
| 2026-02-04 | Sanjay Shukla | President and CEO | MIXED | +6,630 | −$3.66K |
| 2026-02-04 | Jill Marie Broadfoot | Chief Financial Officer | MIXED | +2,192 | −$1.52K |
| 2026-02-04 | Nancy Denyes | General Counsel | MIXED | +1,569 | −$1.09K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Paul Schimmel | Director | 1,421,913 | $151.72K |
| Sanjay Shukla | President and CEO | 153,553 | $16.38K |
| Jill Marie Broadfoot | Chief Financial Officer | 38,854 | $4.15K |
| Nancy Denyes | General Counsel | 33,124 | $3.53K |
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 ATYR 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.