LI DEAN Y

PrivateCIK: 1837016
Location

KENILWORTH, NJ

LI DEAN Y (Executive VP & President, MRL) exercised options at MERCK & CO., INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderLI DEAN YCIK 1837016
IssuerMERCK & CO., INC.CIK 310158
Officer· Executive VP & President, MRL
Since Jan 2021
-2.33K
Net shares
Net seller
$255.9K
Total sold
0
Open market trades
0B · 0S
3
Total transactions
4.72K acquired · 7.05K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+4.72K

Price / share

$110.03

Trade value

$519.56K

% of position

5.1%
4/29/2026
92.04K96.76K

Common Stock

Direct
F · Tax Withholding

Shares

2.33K

Price / share

$110.03

Trade value

$255.93K

% of position

2.4%
4/29/2026
96.76K94.43K
Total

Net shares

+2.40K

Net value

$263.63K

Derivative Transactions1

Restricted Stock Unit

Direct
M · Option Exercise
Converts to

Common Stock

4.72K shares

Shares

4.72K

Strike price

Held after

9.44K

Exercisable

4/29/2026
LI DEAN Y — Insider Transaction (Form 4) Filed May 1, 2026 | Finecho