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)
DateInsiderTypeSharesPrice
Jun 1, 2026Cambrian BioPharma Inc10 percent ownerSell24,524$20.00
Jun 1, 2026Cambrian BioPharma Inc10 percent ownerSell476$21.14
Jun 1, 2026Peyer James10 percent owner, other: See remarks belowSell24,524$20.00
Jun 1, 2026Peyer James10 percent owner, other: See remarks belowSell476$21.14
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy1,276$34.75
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy26$33.47
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell374$33.35
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell1,265$31.75
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell3,099$30.86
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy701$35.55
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy4,995$25.99
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy2,992$25.08
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell36$27.37
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell469$26.77
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy294$28.13
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy4,384$27.28
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy10,643$26.29
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell1,274$28.69
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell583$26.88
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy1,025$29.98
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy2,601$28.85
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy1,327$27.95
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy778$27.23
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell46$34.75
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell1,104$31.52
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy3,401$35.46
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy1,613$34.59
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerBuy1,161$31.53
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell87$31.52
May 15, 2026MILLENNIUM MANAGEMENT LLC10 percent ownerSell5$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
InstitutionActionSharesFiled
VIVO CAPITAL, LLCNew Position722KMay 20, 2026
WOODLINE PARTNERS LPNew Position361KMay 15, 2026
CORMORANT ASSET MANAGEMENT, LPNew Position306KMay 15, 2026
MILLENNIUM MANAGEMENT LLCNew Position147KMay 15, 2026
FRANKLIN RESOURCES INCNew Position134KMay 13, 2026
STEMPOINT CAPITAL LPNew Position133KMay 18, 2026
CALIGAN PARTNERS LPNew Position126KMay 15, 2026
Trails Edge Capital Partners, LPNew Position125KMay 15, 2026
MARSHALL WACE, LLPNew Position66KMay 15, 2026
GOLDMAN SACHS GROUP INCNew Position62KMay 15, 2026
HRT FINANCIAL LPNew Position58KMay 14, 2026
SUVRETTA CAPITAL MANAGEMENT, LLCNew Position35KMay 15, 2026
BANK OF AMERICA CORP /DE/Increased33KMay 18, 2026
RENAISSANCE TECHNOLOGIES LLCIncreased32KMay 14, 2026
LOGOS GLOBAL MANAGEMENT LPNew Position30KMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.