AMST · Insider Trading
Amesite Inc.
Every open-market purchase and sale reported by AMST 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 |
|---|---|---|---|---|---|
| 2026-10-02 | J Michael Losh | Director | A | +14,646 deriv. | — |
| 2026-10-02 | Barbie Brewer | Director | A | +14,015 deriv. | — |
| 2026-10-02 | George Parmer | Director | A | +12,121 deriv. | — |
| 2026-10-02 | Gilbert S Omenn | Director | A | +12,121 deriv. | — |
| 2026-07-01 | Gilbert S Omenn | Director | A | +9,023 deriv. | — |
| 2026-07-01 | George Parmer | Director | A | +9,023 deriv. | — |
| 2026-07-01 | J Michael Losh | Director | A | +10,902 deriv. | — |
| 2026-07-01 | Barbie Brewer | Director | A | +10,432 deriv. | — |
| 2026-07-01 | Sarah Berman | CHIEF FINANCIAL OFFICER | A | +10,000 deriv. | — |
| 2026-07-01 | Sarah Berman | CHIEF FINANCIAL OFFICER | A | +2,500 deriv. | — |
| 2026-05-18 | George Parmer | Director | Buy | +243,902 | +$350.00K |
| 2026-05-18 | Ann Marie Sastry | CHIEF EXECUTIVE OFFICER | Buy | +174,216 | +$250.00K |
| 2026-04-01 | Gilbert S Omenn | Director | A | +6,522 deriv. | — |
| 2026-04-01 | Barbie Brewer | Director | A | +7,541 deriv. | — |
| 2026-04-01 | George Parmer | Director | A | +6,522 deriv. | — |
| 2026-04-01 | J Michael Losh | Director | A | +7,880 deriv. | — |
| 2026-03-10 | Gilbert S Omenn | Director | M | +41,322 | — |
| 2026-03-10 | Barbie Brewer | Director | M | +41,322 | — |
| 2026-03-10 | George Parmer | Director | M | +41,322 | — |
| 2026-03-10 | J Michael Losh | Director | M | +41,322 | — |
| 2026-02-10 | Barbie Brewer | Director | A | +49,751 deriv. | — |
| 2026-02-10 | J Michael Losh | Director | A | +49,751 deriv. | — |
| 2026-02-10 | George Parmer | Director | A | +49,751 deriv. | — |
| 2026-02-10 | Gilbert S Omenn | Director | A | +49,751 deriv. | — |
| 2026-01-05 | Gilbert S Omenn | Director | A | +6,349 deriv. | — |
| 2026-01-05 | J Michael Losh | Director | A | +7,672 deriv. | — |
| 2026-01-05 | Barbie Brewer | Director | A | +7,341 deriv. | — |
| 2026-01-05 | George Parmer | Director | A | +6,349 deriv. | — |
| 2025-10-02 | George Parmer | Director | A | +3,934 deriv. | — |
| 2025-10-02 | Barbie Brewer | Director | A | +4,549 deriv. | — |
| 2025-10-02 | J Michael Losh | Director | A | +4,754 deriv. | — |
| 2025-10-02 | Gilbert S Omenn | Director | A | +3,934 deriv. | — |
| 2025-07-02 | J Michael Losh | Director | A | +5,390 deriv. | — |
| 2025-07-02 | Gilbert S Omenn | Director | A | +4,461 deriv. | — |
| 2025-07-02 | George Parmer | Director | A | +4,461 deriv. | — |
| 2025-07-02 | Barbie Brewer | Director | A | +5,158 deriv. | — |
| 2025-04-02 | Gilbert S Omenn | Director | A | +4,959 deriv. | — |
| 2025-04-02 | George Parmer | Director | A | +4,959 deriv. | — |
| 2025-04-02 | Barbie Brewer | Director | A | +5,733 deriv. | — |
| 2025-04-02 | J Michael Losh | Director | A | +5,992 deriv. | — |
| 2025-03-11 | Gilbert S Omenn | Director | MIXED | +55,942 | — |
| 2025-03-11 | George Parmer | Director | MIXED | +55,942 | — |
| 2025-03-11 | Barbie Brewer | Director | MIXED | +55,942 | — |
| 2025-03-11 | J Michael Losh | Director | MIXED | +55,942 | — |
| 2025-01-16 | Barbie Brewer | Director | M | +36,630 | — |
| 2025-01-16 | Gilbert S Omenn | Director | M | +36,630 | — |
| 2025-01-16 | J Michael Losh | Director | M | +36,630 | — |
| 2025-01-16 | George Parmer | Director | M | +36,630 | — |
| 2025-01-08 | Ann Marie Sastry | CHIEF EXECUTIVE OFFICER | Buy | +333,333 | +$1000.00K |
| 2025-01-08 | Gilbert S Omenn | Director | Buy | +3,333 | +$10.00K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Ann Marie Sastry | CHIEF EXECUTIVE OFFICER | 1,925,078 | $1.16M |
| George Parmer | Director | 566,962 | $340.18K |
| Gilbert S Omenn | Director | 143,699 | $86.22K |
| J Michael Losh | Director | 138,200 | $82.92K |
| Barbie Brewer | Director | 135,977 | $81.59K |
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 AMST 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.