Sensei Biotherapeutics, Inc. (SNSE) Insider Trading
Over the last 3 months, SNSE insiders made 26 open-market buys and 29 sales, a net sale of -$364K (SEC Form 4). Over the last 6 months, 4 institutions increased and 1 reduced their position (13F).
Insider Activity
Sentiment
44/100
Buys (3m)
26
Sells (3m)
29
Net (3m)
-$363.8K
Insiders buying
Insider trades by month Buys Sells
Feb
Jun
Sep
Dec
May
Jun
Context3-month price -49.6%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 1, 2026 | Cambrian BioPharma Inc10 percent owner | Sell | 24,524 | $20.00 |
| Jun 1, 2026 | Cambrian BioPharma Inc10 percent owner | Sell | 476 | $21.14 |
| Jun 1, 2026 | Peyer James10 percent owner, other: See remarks below | Sell | 24,524 | $20.00 |
| Jun 1, 2026 | Peyer James10 percent owner, other: See remarks below | Sell | 476 | $21.14 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 1,276 | $34.75 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 26 | $33.47 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 374 | $33.35 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 1,265 | $31.75 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 3,099 | $30.86 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 701 | $35.55 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 4,995 | $25.99 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 2,992 | $25.08 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 36 | $27.37 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 469 | $26.77 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 294 | $28.13 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 4,384 | $27.28 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 10,643 | $26.29 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 1,274 | $28.69 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 583 | $26.88 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 1,025 | $29.98 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 2,601 | $28.85 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 1,327 | $27.95 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 778 | $27.23 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 46 | $34.75 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 1,104 | $31.52 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 3,401 | $35.46 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 1,613 | $34.59 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Buy | 1,161 | $31.53 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 87 | $31.52 |
| May 15, 2026 | MILLENNIUM MANAGEMENT LLC10 percent owner | Sell | 5 | $28.41 |
Source: SNSE SEC Form 4 filings, latest Jun 1, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their SNSE positions over the last 6 months (SEC Form 13F).
Increased
4
New positions
22
Reduced
1
Sold out
2
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| VIVO CAPITAL, LLC | New Position | 722K | May 20, 2026 |
| WOODLINE PARTNERS LP | New Position | 361K | May 15, 2026 |
| CORMORANT ASSET MANAGEMENT, LP | New Position | 306K | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | New Position | 147K | May 15, 2026 |
| FRANKLIN RESOURCES INC | New Position | 134K | May 13, 2026 |
| STEMPOINT CAPITAL LP | New Position | 133K | May 18, 2026 |
| CALIGAN PARTNERS LP | New Position | 126K | May 15, 2026 |
| Trails Edge Capital Partners, LP | New Position | 125K | May 15, 2026 |
| MARSHALL WACE, LLP | New Position | 66K | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | New Position | 62K | May 15, 2026 |
| HRT FINANCIAL LP | New Position | 58K | May 14, 2026 |
| SUVRETTA CAPITAL MANAGEMENT, LLC | New Position | 35K | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 33K | May 18, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 32K | May 14, 2026 |
| LOGOS GLOBAL MANAGEMENT LP | New Position | 30K | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.