Christine E. Seidman

CIK: 0001805745

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)11 (100.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MRK

Merck & Co., Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (11 total)

MRK
Merck & Co., Inc.
Sep 30, 2026
Award(A)
Phantom Stock
Direct
56 shares at avg. $145.31-
MRK
Merck & Co., Inc.
Jun 30, 2026
Award(A)
Phantom Stock
Direct
63 shares at avg. $128.50-
MRK
Merck & Co., Inc.
May 29, 2026
Award(A)
Phantom Stock
Direct
1.9K shares at avg. $118.72-
MRK
Merck & Co., Inc.
Mar 31, 2026
Award(A)
Phantom Stock
Direct
68 shares at avg. $120.29-
MRK
Merck & Co., Inc.
Dec 31, 2025
Award(A)
Phantom Stock
Direct
77 shares at avg. $105.26-
MRK
Merck & Co., Inc.
Sep 30, 2025
Award(A)
Phantom Stock
Direct
97 shares at avg. $83.93-
MRK
Merck & Co., Inc.
Jun 30, 2025
Award(A)
Phantom Stock
Direct
103 shares at avg. $79.16-
MRK
Merck & Co., Inc.
May 30, 2025
Award(A)
Phantom Stock
Direct
2.9K shares at avg. $76.84-
MRK
Merck & Co., Inc.
Mar 31, 2025
Award(A)
Phantom Stock
Direct
91 shares at avg. $89.76-
MRK
Merck & Co., Inc.
Dec 31, 2024
Award(A)
Phantom Stock
Direct
82 shares at avg. $99.48-
MRK
Merck & Co., Inc.
Sep 30, 2024
Award(A)
Phantom Stock
Direct
72 shares at avg. $113.56-

		Type	Shares	Price		Ownership
Sep 30, 2026	MRK Merck & Co., Inc.	Award(A) Phantom Stock	56	$145.31	-	Direct
Jun 30, 2026	MRK Merck & Co., Inc.	Award(A) Phantom Stock	63	$128.50	-	Direct
May 29, 2026	MRK Merck & Co., Inc.	Award(A) Phantom Stock	1,853	$118.72	-	Direct
Mar 31, 2026	MRK Merck & Co., Inc.	Award(A) Phantom Stock	68	$120.29	-	Direct
Dec 31, 2025	MRK Merck & Co., Inc.	Award(A) Phantom Stock	77	$105.26	-	Direct
Sep 30, 2025	MRK Merck & Co., Inc.	Award(A) Phantom Stock	97	$83.93	-	Direct
Jun 30, 2025	MRK Merck & Co., Inc.	Award(A) Phantom Stock	103	$79.16	-	Direct
May 30, 2025	MRK Merck & Co., Inc.	Award(A) Phantom Stock	2,863	$76.84	-	Direct
Mar 31, 2025	MRK Merck & Co., Inc.	Award(A) Phantom Stock	91	$89.76	-	Direct
Dec 31, 2024	MRK Merck & Co., Inc.	Award(A) Phantom Stock	82	$99.48	-	Direct
Sep 30, 2024	MRK Merck & Co., Inc.	Award(A) Phantom Stock	72	$113.56	-	Direct

1-11 of 11 transactions

About Seidman Christine E

Seidman Christine E (SEC CIK 0001805745) files insider reports with the SEC as Director of Merck & Co., Inc. (MRK).

Signal8 holds 11 ownership filings by Seidman Christine E, all Form 4s, filed between Oct 1, 2024 and Oct 1, 2026. Those filings report 11 transactions, from Sep 30, 2024 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Seidman Christine E's filings is in RAHWAY, NJ.

Recent filings by Seidman Christine E

Sep 30, 2026: Grant or award of MRK derivative securities (Form 4, code A).
Jun 30, 2026: Grant or award of MRK derivative securities (Form 4, code A).
May 29, 2026: Grant or award of MRK derivative securities (Form 4, code A).
Mar 31, 2026: Grant or award of MRK derivative securities (Form 4, code A).
Dec 31, 2025: Grant or award of MRK derivative securities (Form 4, code A).

Other insiders filing for Merck & Co., Inc. (MRK)

DIAZ PAUL J, Director
Maraldo David R., EVP & Pres. MMD
Karsanbhai Surendralal Lanca, Director
Coe Mary Ellen, Director
Gupta Gaurav K, EVP, CIDO
Guindo Chirfi, EVP, Access, Policy & Comms

How to read Form 4 transaction codes