Seidman Christine E
- Shares
- 21.29K
- % company
- <0.01%
- Price
- $128.50
- Value
- $2,735,894
Filed Jun 30, 2026
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NYSE · Healthcare · Holders
Merck & Company, Inc. (MRK) Insider Trading History
Recent Form 4 insider activity for MRK, with filters for buys, sales, option exercises, gifts, and tax withholding.
Section freshness
Price Aug 19, 3:44 PM EDT · Statements Jun 29, 8:00 PM EDT
Ownership read
MRK insider sentiment: Net selling.
16 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.
Insider flow
MRK
Purchases0
Sales1.85M
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Insider stance
Net selling
$220.28M sold / — bought
Latest filing
Jun 30, 2026
Most recent holder or insider filing date
Filings shown
113
113 insider
- Latest filing
- Jun 30, 2026
- Most recent holder or insider filing date
- Insider rows
- 113
- Market data source
Recent insider transactions
Merck & Company, Inc. (MRK) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
Karsanbhai Surendralal Lanca
- Shares
- 5.52K
- % company
- <0.01%
- Price
- $128.50
- Value
- $709,192
Filed Jun 30, 2026
Coe Mary Ellen
- Shares
- 32.00K
- % company
- <0.01%
- Price
- $128.50
- Value
- $4,111,872
Filed Jun 30, 2026
Mayo Stephen
- Shares
- 14.82K
- % company
- <0.01%
- Price
- $118.72
- Value
- $1,760,024
Filed May 29, 2026
Seidman Christine E
- Shares
- 21.23K
- % company
- <0.01%
- Price
- $118.72
- Value
- $2,520,188
Filed May 29, 2026
Karsanbhai Surendralal Lanca
- Shares
- 5.39K
- % company
- <0.01%
- Price
- $118.72
- Value
- $640,138
Filed May 29, 2026
Coe Mary Ellen
- Shares
- 31.77K
- % company
- <0.01%
- Price
- $118.72
- Value
- $3,771,260
Filed May 29, 2026
Rothman Paul
- Shares
- 34.95K
- % company
- <0.01%
- Price
- $118.72
- Value
- $4,148,670
Filed May 29, 2026
Warden Kathy J
- Shares
- 17.89K
- % company
- <0.01%
- Price
- $118.72
- Value
- $2,123,901
Filed May 29, 2026
THULIN INGE G
- Shares
- 27.47K
- % company
- <0.01%
- Price
- $118.72
- Value
- $3,261,238
Filed May 29, 2026
Craig Pamela J.
- Shares
- 34.95K
- % company
- <0.01%
- Price
- $118.72
- Value
- $4,148,670
Filed May 29, 2026
BAKER DOUGLAS M JR
- Shares
- 11.52K
- % company
- <0.01%
- Price
- $118.72
- Value
- $1,367,417
Filed May 29, 2026
| # | Insider | % company | Action | Shares | Filing date |
|---|---|---|---|---|---|
| 1 | Seidman Christine E | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 21.29K | Jun 30, 2026 |
| 2 | Karsanbhai Surendralal Lanca | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 5.52K | Jun 30, 2026 |
| 3 | Coe Mary Ellen | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 32.00K | Jun 30, 2026 |
| 4 | Mayo Stephen | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 14.82K | May 29, 2026 |
| 5 | Seidman Christine E | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 21.23K | May 29, 2026 |
| 6 | Karsanbhai Surendralal Lanca | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 5.39K | May 29, 2026 |
| 7 | Coe Mary Ellen | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 31.77K | May 29, 2026 |
| 8 | Rothman Paul | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 34.95K | May 29, 2026 |
| 9 | Warden Kathy J | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 17.89K | May 29, 2026 |
| 10 | THULIN INGE G | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 27.47K | May 29, 2026 |
| 11 | Craig Pamela J. | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 34.95K | May 29, 2026 |
| 12 | BAKER DOUGLAS M JR | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 11.52K | May 29, 2026 |
Showing 12 of 113 matching Form 4 rows. Percent of company uses current shares outstanding.
Frequently asked
Common questions.
Who is the most active reported MRK insider?
Davis Robert M has the largest absolute share movement in the displayed MRK filing rows, totaling 2.04 million shares. The action labels provide the transaction context.