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  3. Karachun Rita A

Karachun Rita A

CIK: 0001601572
Director
Primary company: Merck & Co., Inc. (MRK)

Karachun Rita A is a corporate insider at Merck & Co., Inc. (MRK) filing SEC Form 4 transactions. 106 transactions across 2 companies, totaling $0 in purchases and $12,909,960 in sales. Source: SEC EDGAR.

Total Transactions
106
Total Buy Value
$0
Total Sell Value
$12.91M
Net Activity
$-12.91M
Last Transaction
Jun 2026
Companies
2

Companies

Transaction History

Source: SEC EDGAR Form 4 insider transaction filings.

Company
Type
Shares
Price
Value
Shares After
Date
SEC
Coherus Oncology, Inc.
CHRS
Award60,000$1.45$87K60,000
6/5/2026
Filed: 6/5/2026
Filing →
Coherus Oncology, Inc.
CHRS
Award30,000--30,000
6/5/2026
Filed: 6/5/2026
Filing →
Coherus Oncology, Inc.
CHRS
Award112,000--112,000
6/12/2025
Filed: 6/13/2025
Filing →
Coherus BioSciences, Inc.
CHRS
Award168,000--168,000
6/4/2024
Filed: 6/5/2024
Filing →
Merck & Co., Inc.
MRK
Exercise15,875$0.00$00
5/4/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Exercise949$0.00$0951
5/4/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Sale15,875$117.53$1.87M45,709
5/4/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Exercise15,875$62.07$985K61,584
5/4/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Tax Payment326$118.22$39K45,709
5/4/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Exercise949$118.22$112K46,035
5/4/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Exercise803$0.00$01,608
5/3/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Tax Payment276$117.89$33K45,086
5/3/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Exercise803$117.89$95K45,362
5/3/2023
Filed: 5/5/2023
Filing →
Merck & Co., Inc.
MRK
Award1,781$0.00$01,781
5/2/2023
Filed: 5/4/2023
Filing →
Merck & Co., Inc.
MRK
Award9,682$0.00$09,682
5/2/2023
Filed: 5/4/2023
Filing →
Merck & Co., Inc.
MRK
Exercise930$0.00$00
5/1/2023
Filed: 5/3/2023
Filing →
Merck & Co., Inc.
MRK
Tax Payment319$115.47$37K44,559
5/1/2023
Filed: 5/3/2023
Filing →
Merck & Co., Inc.
MRK
Exercise930$115.47$107K44,878
5/1/2023
Filed: 5/3/2023
Filing →
Merck & Co., Inc.
MRK
Award2,846$109.88$313K43,948
1/23/2023
Filed: 1/25/2023
Filing →
Merck & Co., Inc.
MRK
Exercise15,000$0.00$015,875
10/28/2022
Filed: 11/1/2022
Filing →
Coherus Oncology, Inc.
CHRS
Type
Award
Shares
60,000
Price
$1.45
Value
$87K
Coherus Oncology, Inc.
CHRS
Type
Award
Shares
30,000
Price
-
Value
-
Coherus Oncology, Inc.
CHRS
Type
Award
Shares
112,000
Price
-
Value
-
Coherus BioSciences, Inc.
CHRS
Type
Award
Shares
168,000
Price
-
Value
-
Merck & Co., Inc.
MRK
Type
Exercise
Shares
15,875
Price
$0.00
Value
$0
Merck & Co., Inc.
MRK
Type
Exercise
Shares
949
Price
$0.00
Value
$0
Merck & Co., Inc.
MRK
Type
Sale
Shares
15,875
Price
$117.53
Value
$1.87M
Merck & Co., Inc.
MRK
Type
Exercise
Shares
15,875
Price
$62.07
Value
$985K
Merck & Co., Inc.
MRK
Type
Tax Payment
Shares
326
Price
$118.22
Value
$39K
Merck & Co., Inc.
MRK
Type
Exercise
Shares
949
Price
$118.22
Value
$112K
Merck & Co., Inc.
MRK
Type
Exercise
Shares
803
Price
$0.00
Value
$0
Merck & Co., Inc.
MRK
Type
Tax Payment
Shares
276
Price
$117.89
Value
$33K
Merck & Co., Inc.
MRK
Type
Exercise
Shares
803
Price
$117.89
Value
$95K
Merck & Co., Inc.
MRK
Type
Award
Shares
1,781
Price
$0.00
Value
$0
Merck & Co., Inc.
MRK
Type
Award
Shares
9,682
Price
$0.00
Value
$0
Merck & Co., Inc.
MRK
Type
Exercise
Shares
930
Price
$0.00
Value
$0
Merck & Co., Inc.
MRK
Type
Tax Payment
Shares
319
Price
$115.47
Value
$37K
Merck & Co., Inc.
MRK
Type
Exercise
Shares
930
Price
$115.47
Value
$107K
Merck & Co., Inc.
MRK
Type
Award
Shares
2,846
Price
$109.88
Value
$313K
Merck & Co., Inc.
MRK
Type
Exercise
Shares
15,000
Price
$0.00
Value
$0
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© 2026 13F Insight — Track smart money. Ask the AI Agent.

Listed on Turbo0Featured on Findly ToolsFeatured on toolfame.comFeatured on saasfame.comFeatured on Gets.ToolsZ-ImageFeatured On Micro SaaS ExamplesListed on MarketingDBFeatured on SaasDBFeatured on FazierBusiness Services - OnToplist.comFeatured on SubmitMySaasFeatured on ToolDirsFeatured on ToolfioFeatured on Twelve ToolsListed on uno directoryFeatured on Dang.aiFeatured on ToolPilotFeatured on Startup FameFeatured on PostmakeFeatured on Code.Market