ProMIS Neurosciences (PMN) stock: insider trades, news & valuation
Strong buyingShare price and insider trades
ProMIS Neurosciences insider trading at a glance (Oct 9, 2026): in the past 12 months, 4 insiders bought $8.7M and 0 sold $0 of PMN stock on the open market.
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PMN insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $30K | 1 | — | 0 |
| Q2 2026 | $45K | 1 | — | 0 |
| Q1 2026 | $8.7M | 6 | — | 0 |
| Q4 2025 | $15K | 1 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 4 ProMIS Neurosciences Inc. insiders reported open-market purchases totaling $8.7M, while 0 insiders reported sales totaling $0. Among insiders with enough purchase history to measure, Eugene Williams (Director) has the highest Insider Score at 1.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 7SEC | Johanne KaplanChief Development Officer | Buy | 2,2806,221 held (+58%) | $13.30 | $30K | -27.7% | — |
| Apr 23SEC | Patrick D. KirwinDirector | Buy | 4,0004,653 held (+613%) | $11.33 | $45K | -15.2% | — |
| Mar 6SEC | Eugene WilliamsDirector | Buy | 2,00012,397 held (+19%) | $24.40 | $49K | -60.6% | 1 |
| Mar 4SEC | Eugene WilliamsDirector | Buy | 2,00010,397 held (+24%) | $24.00 | $48K | -60.0% | 1 |
| Mar 4SEC | Eugene WilliamsDirector | Buy | 1,0007,397 held (+16%) | $22.53 | $23K | -57.3% | 1 |
| Mar 4SEC | Eugene WilliamsDirector | Buy | 1,0008,397 held (+14%) | $21.89 | $22K | -56.1% | 1 |
| Feb 23SEC | Johanne KaplanChief Development Officer | Buy | 1,6293,941 held (+70%) | $15.35 | $25K | -37.4% | — |
| Feb 5SEC | Fan Yu10% Owner | Buy | 700,741943,090 held (+289%) | $12.13 | $8.5M | -20.8% | — |
| Oct 6SEC | Max A. MilburyPrincipal Accounting Officer | Buy | 30,39245,389 held (+203%) | $0.49 | $15K | +1861.2% | — |
Insiders at ProMIS Neurosciences Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Fan Yu10% Owner | $8.5M | — | Feb 5, 2026 | — |
| Eugene WilliamsDirector | $141K | — | Mar 6, 2026 | 1 |
| Johanne KaplanChief Development Officer | $55K | — | Aug 7, 2026 | — |
| Patrick D. KirwinDirector | $45K | — | Apr 23, 2026 | — |
| Max A. MilburyPrincipal Accounting Officer | $15K | — | Oct 6, 2025 | — |
PMN stock: common questions
Are ProMIS Neurosciences Inc. insiders buying PMN stock?
In the past 12 months, 4 insiders reported open-market purchases of PMN worth $8.7M. The latest was Chief Development Officer Johanne Kaplan bought $30K of PMN at $13.30 — largest purchase by this insider in our records; raises the stake by 58%.
Are ProMIS Neurosciences Inc. insiders selling PMN stock?
0 insiders reported sales worth $0 over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is PMN's 52-week range?
Over the past year PMN has traded between $6.76 and $24.79. It last closed at $9.61 on Oct 9, 2026.