PMN insider buying – ProMIS Neurosciences Inc.
13 insider purchases since 2016 worth $9.2M by 8 different insiders. Last 12 months: 6 purchases, $8.7M. Most recent filing: 2026-08-07.
Small company Public float $30M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Yu Fan Director | $8.5M 1× · 700,741 sh | 2026-02-03 2026-02-03 | – | 943,090 shares as of 2026-02-05 | Holds - never sold |
| Shafmaster Madge K. Director | $255,600 1× · 200,000 sh | 2024-09-20 2024-09-20 | – | 68,333 shares as of 2024-09-24 | Holds - never sold |
| Williams Eugene Director | $141,220 2× · 6,000 sh | 2026-03-02 2026-03-05 | – | 12,397 shares as of 2026-03-06 | Holds - never sold |
| GORDON MICHAEL S 10% Owner | $116,665 1× · 93,223 sh | 2024-09-16 2024-09-16 | – | 2,435,029 shares as of 2025-08-14 | Holds - never sold |
| Kirwin Patrick D. Director | $95,390 4× · 21,000 sh | 2022-08-17 2026-04-22 | – | 10,093 shares as of 2026-04-23 | Holds - never sold |
| Kaplan Johanne Officer | $55,329 2× · 3,909 sh | 2026-02-19 2026-08-05 | – | 6,221 shares as of 2026-08-07 | Holds - never sold |
| Milbury Max A. Other | $14,892 1× · 30,392 sh | 2025-10-03 2025-10-03 | – | 8,409 shares as of 2026-02-05 | Holds - never sold |
| Cashman Neil Officer | $14,550 1× · 15,000 sh | 2025-02-10 2025-02-10 | – | 9,318 shares as of 2026-02-05 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 6 | $8.7M | 4 | – | – |
| 2025 | 2 | $29,442 | 2 | – | – |
| 2024 | 3 | $384,765 | 3 | – | – |
| 2022 | 2 | $37,570 | 1 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-07 | Kaplan Johanne | Officer | 2,280 | $13.30 | $30,324 | +57.9% | SEC |
| 2026-04-23 | Kirwin Patrick D. | Director | 4,000 | $11.33 | $45,320 | +612.6% | SEC |
| 2026-03-06 | Williams Eugene | Director | 2,000 | $24.40 | $48,800 | +19.2% | SEC |
| 2026-03-04 | Williams Eugene | Director | 4,000 | $23.11 | $92,420 | +62.5% | SEC |
| 2026-02-23 | Kaplan Johanne | Officer | 1,629 | $15.35 | $25,005 | +70.5% | SEC |
| 2026-02-05 | Yu Fan | Director | 700,741 | $12.13 | $8.5M | +289.1% | SEC |
| 2025-10-06 | Milbury Max A. | Other | 30,392 | $0.49 | $14,892 | +202.7% | SEC |
| 2025-02-12 | Cashman Neil | Officer | 15,000 | $0.97 | $14,550 | +927.6% | SEC |
| 2024-09-24 | Shafmaster Madge K. | Director | 200,000 | $1.28 | $255,600 | +2400.1% | SEC |
| 2024-09-18 | GORDON MICHAEL S | 10% Owner | 93,223 | $1.25 | $116,665 | SEC | |
| 2024-08-16 | Kirwin Patrick D. | Director | 10,000 | $1.25 | $12,500 | +18.9% | SEC |
| 2022-12-15 | Kirwin Patrick D. | Director | 3,000 | $4.63 | $13,890 | +12.0% | SEC |
| 2022-08-18 | Kirwin Patrick D. | Director | 4,000 | $5.92 | $23,680 | +10.5% | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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