MILLENNIUM MANAGEMENT LLC

PrivateCIK: 1273087
Location

NEW YORK, NY

MILLENNIUM MANAGEMENT LLC made both purchases and sales at SENSEI BIOTHERAPEUTICS, INC.

Purchased 3.2% of their position (4.21K shares) and sold 11.3% of their position (17.08K shares) — review individual transaction dates and prices for directional context.

P · 5S · 12
InsiderMILLENNIUM MANAGEMENT LLCCIK 1273087
10% Owner
Since Mar 2026
-12.86K
Net shares
Net seller
$538.1K
Total sold
17
Open market trades
5B · 12S
17
Total transactions
4.21K acquired · 17.08K disposed
Non-Derivative Transactions17

Common Stock

Indirect
P · Purchase

Shares

+26.00

Price / share

$33.47

Trade value

$870.23

% of position

0.0%
4/2/2026
144.95K144.97K

Common Stock

Indirect
P · Purchase

Shares

+1.28K

Price / share

$34.75

Trade value

$44.34K

% of position

0.9%
4/2/2026
143.70K144.97K

Common Stock

Indirect
P · Purchase

Shares

+701.00

Price / share

$35.55

Trade value

$24.92K

% of position

0.5%
4/2/2026
144.27K144.97K

Common Stock

Indirect
S · Sale

Shares

3.10K

Price / share

$30.86

Trade value

$95.65K

% of position

2.1%
4/2/2026
148.07K144.97K

Common Stock

Indirect
S · Sale

Shares

1.26K

Price / share

$31.75

Trade value

$40.17K

% of position

0.9%
4/2/2026
146.24K144.97K

Common Stock

Indirect
S · Sale

Shares

1.79K

Price / share

$32.60

Trade value

$58.49K

% of position

1.2%
4/2/2026
146.77K144.97K

Common Stock

Indirect
S · Sale

Shares

374.00

Price / share

$33.35

Trade value

$12.47K

% of position

0.3%
4/2/2026
145.35K144.97K

Common Stock

Indirect
S · Sale

Shares

1.13K

Price / share

$34.80

Trade value

$39.46K

% of position

0.8%
4/2/2026
146.11K144.97K

Common Stock

Indirect
P · Purchase

Shares

+1.10K

Price / share

$31.02

Trade value

$34.25K

% of position

0.8%
4/6/2026
139.93K141.03K

Common Stock

Indirect
S · Sale

Shares

1.21K

Price / share

$31.02

Trade value

$37.66K

% of position

0.9%
4/6/2026
142.24K141.03K

Common Stock

Indirect
S · Sale

Shares

45.00

Price / share

$31.96

Trade value

$1.44K

% of position

0.0%
4/6/2026
141.07K141.03K

Common Stock

Indirect
P · Purchase

Shares

+1.11K

Price / share

$33.38

Trade value

$36.99K

% of position

0.8%
4/7/2026
132.88K133.99K

Common Stock

Indirect
S · Sale

Shares

2.12K

Price / share

$28.94

Trade value

$61.21K

% of position

1.6%
4/7/2026
136.10K133.99K

Common Stock

Indirect
S · Sale

Shares

205.00

Price / share

$29.71

Trade value

$6.09K

% of position

0.2%
4/7/2026
134.19K133.99K

Common Stock

Indirect
S · Sale

Shares

4.42K

Price / share

$31.38

Trade value

$138.81K

% of position

3.2%
4/7/2026
138.41K133.99K

Common Stock

Indirect
S · Sale

Shares

300.00

Price / share

$32.25

Trade value

$9.67K

% of position

0.2%
4/7/2026
134.29K133.99K

Common Stock

Indirect
S · Sale

Shares

1.11K

Price / share

$33.38

Trade value

$36.99K

% of position

0.8%
4/7/2026
135.09K133.99K
Total

Net shares

12.86K

Net value

-$396.75K

Derivative Transactions0
No derivative transactions reported
MILLENNIUM MANAGEMENT LLC — Insider Transaction (Form 4) Filed May 15, 2026 | Finecho