ANNX insider buying – Annexon, Inc.
30 insider purchases since 2016 worth $63.9M by 8 different insiders. Last 12 months: 10 purchases, $12.4M. Most recent filing: 2026-09-25.
Small company Public float $244M (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. 4 older purchases (before the 5-year window) are listed in the table below.
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 |
|---|---|---|---|---|---|
| Satter Muneer A Director | $43.8M 7× · 8,587,156 sh | 2020-07-28 2026-05-28 | – | 10,342,134 shares as of 2026-05-29 | Holds - never sold |
| DEERFIELD PARTNERS, L.P. 10% Owner | $11.9M 1× · 700,000 sh | 2020-07-28 2020-07-28 | – | 917,828 shares as of 2020-07-28 | Holds - never sold |
| Bain Capital Life Sciences Fund, L.P. 10% Owner | $6.8M 1× · 400,000 sh | 2020-07-28 2020-07-28 | – | 3,241,628 shares as of 2020-07-28 | Holds - never sold |
| Bain Capital Life Sciences Investors, LLC 10% Owner | $639,000 1× · 300,000 sh | 2023-05-25 2023-05-25 | – | 5,701,926 shares as of 2023-05-30 | Holds - never sold |
| Carson William H. Director | $355,490 16× · 70,175 sh | 2024-04-08 2026-05-11 | – | 78,405 shares as of 2026-05-13 | Holds - never sold |
| Love Douglas CEO | $246,829 2× · 86,065 sh | 2022-04-14 2026-09-24 | 4× · $734,565 last 2021-09-16 | 390,476 shares as of 2026-09-25 | Holds (sold earlier) |
| Choi Jung Director | $138,270 1× · 33,000 sh | 2025-12-01 2025-12-01 | – | 33,000 shares as of 2025-12-03 | Holds - never sold |
| Lew Jennifer CFO | $34,000 1× · 2,000 sh | 2020-07-28 2020-07-28 | 3× · $290,051 last 2021-09-13 | 170,700 shares as of 2026-03-04 | Sold part |
* 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 | $3.6M | 3 | – | – |
| 2025 | 7 | $8.8M | 3 | – | – |
| 2024 | 8 | $139,520 | 1 | – | – |
| 2023 | 3 | $19.6M | 2 | 1 | $94,920 |
| 2022 | 2 | $9.6M | 2 | – | – |
| 2021 | 0 | – | – | 11 | $2.3M |
| 2020 | 4 | $22.1M | 4 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-25 | Love Douglas | CEO | 26,065 | $3.83 | $99,829 | +7.2% | SEC |
| 2026-05-29 | Satter Muneer A | Director | 613,497 | $5.41 | $3.3M | +6.3% | SEC |
| 2026-05-13 | Carson William H. | Director | 8,000 | $5.78 | $46,240 | +11.4% | SEC |
| 2026-04-14 | Carson William H. | Director | 8,000 | $6.20 | $49,600 | +12.8% | SEC |
| 2026-03-12 | Carson William H. | Director | 8,000 | $5.67 | $45,360 | +14.7% | SEC |
| 2026-01-02 | Carson William H. | Director | 4,115 | $5.02 | $20,657 | +8.2% | SEC |
| 2025-12-03 | Choi Jung | Director | 33,000 | $4.19 | $138,270 | SEC | |
| 2025-12-03 | Carson William H. | Director | 4,115 | $4.47 | $18,394 | +8.9% | SEC |
| 2025-11-21 | Satter Muneer A | Director | 822,613 | $4.38 | $3.6M | +9.2% | SEC |
| 2025-11-19 | Satter Muneer A | Director | 1,500,000 | $3.37 | $5.1M | +20.3% | SEC |
| 2025-10-31 | Carson William H. | Director | 4,115 | $3.17 | $13,045 | +9.8% | SEC |
| 2025-10-02 | Carson William H. | Director | 4,115 | $3.05 | $12,551 | +10.8% | SEC |
| 2025-07-01 | Carson William H. | Director | 4,115 | $2.46 | $10,123 | +16.1% | SEC |
| 2024-12-04 | Carson William H. | Director | 3,200 | $5.33 | $17,056 | +14.3% | SEC |
| 2024-10-02 | Carson William H. | Director | 3,200 | $5.97 | $19,104 | +16.7% | SEC |
| 2024-09-04 | Carson William H. | Director | 3,200 | $5.48 | $17,536 | +20.0% | SEC |
| 2024-08-05 | Carson William H. | Director | 3,200 | $6.24 | $19,968 | +25.0% | SEC |
| 2024-07-02 | Carson William H. | Director | 3,200 | $5.00 | $16,000 | +33.3% | SEC |
| 2024-06-05 | Carson William H. | Director | 3,200 | $4.83 | $15,456 | +50.0% | SEC |
| 2024-05-03 | Carson William H. | Director | 3,200 | $4.68 | $14,976 | +100.0% | SEC |
| 2024-04-10 | Carson William H. | Director | 3,200 | $6.07 | $19,424 | SEC | |
| 2023-12-28 | Satter Muneer A | Director | 350,000 | $2.88 | $1.0M | +5.0% | SEC |
| 2023-05-30 | Bain Capital Life Sciences Investors, LLC | 10% Owner | 300,000 | $2.13 | $639,000 | +5.6% | SEC |
| 2023-02-14 | Satter Muneer A | Director | 2,647,058 | $6.80 | $18.0M | +60.0% | SEC |
| 2022-07-11 | Satter Muneer A | Director | 2,453,988 | $3.84 | $9.4M | +125.5% | SEC |
| 2022-04-18 | Love Douglas | CEO | 60,000 | $2.45 | $147,000 | +42.6% | SEC |
| 2020-07-28 | Satter Muneer A | Director | 200,000 | $17.00 | $3.4M | +11.4% | SEC |
| 2020-07-28 | Lew Jennifer | CFO | 2,000 | $17.00 | $34,000 | SEC | |
| 2020-07-28 | DEERFIELD PARTNERS, L.P. | 10% Owner | 700,000 | $17.00 | $11.9M | +642.7% | SEC |
| 2020-07-28 | Bain Capital Life Sciences Fund, L.P. | 10% Owner | 400,000 | $17.00 | $6.8M | +14.1% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2023-12-29 | Yednock Ted | Officer | 21,000 | $4.52 | $94,920 | Pre-planned (10b5-1) | SEC |
| 2021-09-20 | Love Douglas | CEO | 7,500 | $22.05 | $165,375 | Sale | SEC |
| 2021-09-15 | Yednock Ted | Officer | 16,190 | $20.00 | $323,800 | Sale | SEC |
| 2021-09-15 | Lew Jennifer | CFO | 3,500 | $20.01 | $70,035 | Sale | SEC |
| 2021-06-09 | Love Douglas | CEO | 7,500 | $22.43 | $168,225 | Sale | SEC |
| 2021-06-07 | Yednock Ted | Officer | 15,000 | $21.49 | $322,340 | Sale | SEC |
| 2021-06-01 | Lew Jennifer | CFO | 3,500 | $22.24 | $77,840 | Sale | SEC |
| 2021-04-02 | Love Douglas | CEO | 7,602 | $28.11 | $213,678 | Sale | SEC |
| 2021-03-31 | Love Douglas | CEO | 7,500 | $24.97 | $187,287 | Sale | SEC |
| 2021-03-29 | Yednock Ted | Officer | 16,175 | $28.80 | $465,777 | Sale | SEC |
| 2021-03-26 | Keswani Sanjay | Officer | 3,995 | $30.17 | $120,529 | Sale | SEC |
| 2021-03-25 | Lew Jennifer | CFO | 5,000 | $28.44 | $142,176 | Sale | SEC |
Recent company events (SEC 8-K)
- 2026-11-09 - Quarterly results released (SEC)
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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