DUNN EDMUND

PrivateCIK: 1989401
Location

BOSTON, MA

DUNN EDMUND (Principal Accounting Officer) sold 53.1% of their position (25.70K shares) of MONTE ROSA THERAPEUTICS, INC. on the open market

Open‑market sale worth $464.9K — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderDUNN EDMUNDCIK 1989401
Officer· Principal Accounting Officer
Since Mar 2026
-25.70K
Net shares
Net seller
$464.9K
Total sold
2
Open market trades
0B · 2S
6
Total transactions
25.70K acquired · 51.40K disposed
Non-Derivative Transactions4

Common Stock

Direct
M · Option Exercise

Shares

+25.16K

Price / share

$13.41

Trade value

$337.45K

% of position

110.9%
2/27/2026
22.69K47.86K

Common Stock

Direct
S · Sale

Shares

25.16K

Price / share

$18.10

Trade value

$455.51K

% of position

52.6%
2/27/2026
47.86K22.69K

Common Stock

Direct
M · Option Exercise

Shares

+536.00

Price / share

$13.41

Trade value

$7.19K

% of position

2.4%
3/2/2026
22.69K23.23K

Common Stock

Direct
S · Sale

Shares

536.00

Price / share

$17.50

Trade value

$9.38K

% of position

2.3%
3/2/2026
23.23K22.69K
Total

Net shares

+0.00

Net value

-$120.25K

Derivative Transactions2

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

25.16K shares

Shares

25.16K

Strike price

13.41

Held after

536.00

Exercisable

2/27/2026

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

536.00 shares

Shares

536.00

Strike price

13.41

Held after

0.00

Exercisable

3/2/2026
DUNN EDMUND — Insider Transaction (Form 4) Filed Mar 2, 2026 | Finecho