Karachun Rita A

Sr. VP Fince-Global Controller at MERCK SHARP & DOHME LLC · on record since Mar 5, 2014
Director at Organon & Co. · on record since May 7, 2021
Director at Coherus Oncology, Inc. · on record since Jun 9, 2026

Insider trading activity of Karachun Rita A

Transactions on record: 105; since May 6, 2014

Open-market buys: 0

Open-market sells: 6; $12.9M

Companies traded: 2; last filing Jun 9, 2026

Figures computed from official regulatory filings — .

Companies where Karachun Rita A has traded

Coherus Oncology, Inc.4 tx · Jun 9, 2026
MERCK SHARP & DOHME LLC101 tx · $22.9M · May 5, 2023

Track record of Karachun Rita A

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Karachun Rita A

Co-insiders of Karachun Rita A

LAZARUS ROCHELLE BMERCK SHARP & DOHME LLC +1
Litchfield CarolineMERCK SHARP & DOHME LLC +1
Ali KevinOrganon & Co.
AMBROSE ADELE DMERCK SHARP & DOHME LLC
Anicetti Vincent RCoherus Oncology, Inc.
ANSTICE DAVID WMERCK SHARP & DOHME LLC
Arjona Ferreira Juan CamiloOrganon & Co.
AVEDON MARCIA JMERCK SHARP & DOHME LLC
BAKER DOUGLAS M JRMERCK SHARP & DOHME LLC
BARSHAY STANLEY FMERCK SHARP & DOHME LLC
BOSSIDY LAWRENCE AMERCK SHARP & DOHME LLC
BOWEN WILLIAM GMERCK SHARP & DOHME LLC
Bowles Richard S IIIMERCK SHARP & DOHME LLC
BRUN LESLIE AMERCK SHARP & DOHME LLC
Canan JohnMERCK SHARP & DOHME LLC
Cech Thomas RMERCK SHARP & DOHME LLC
Chattopadhyay SanatMERCK SHARP & DOHME LLC
CLARK RICHARD TMERCK SHARP & DOHME LLC
Clyburn FrankMERCK SHARP & DOHME LLC
Coe Mary EllenMERCK SHARP & DOHME LLC
COLBERT CELIA AMERCK SHARP & DOHME LLC
COLE JOHNNETTA BMERCK SHARP & DOHME LLC

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Coherus Oncology, Inc.Listing on record	Jun 9, 2026	Award	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Coherus Oncology, Inc.Listing on record	Jun 9, 2026	AwardD (derivative)	60,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Coherus Oncology, Inc.Listing on record	Jun 13, 2025	AwardD (derivative)	112,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Coherus Oncology, Inc.Listing on record	Jun 5, 2024	AwardD (derivative)	168,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Other	-276	117.89 USD	$32.5K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	ExerciseD (derivative)	-949	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Other	-326	118.22 USD	$38.5K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Sell	-15,875	117.53 USD	$1.9M		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Exercise	803	117.89 USD	$94.7K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	ExerciseD (derivative)	-15,875	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	ExerciseD (derivative)	-803	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Exercise	15,875	62.07 USD	$985.4K	Unusual size	SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Exercise	949	118.22 USD	$112.2K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 4, 2023	AwardD (derivative)	9,682	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 4, 2023	AwardD (derivative)	1,781	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 3, 2023	Exercise	930	115.47 USD	$107.4K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 3, 2023	ExerciseD (derivative)	-930	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 3, 2023	Other	-319	115.47 USD	$36.8K		SEC
MERCK SHARP & DOHME LLCListing unverified	Jan 25, 2023	Award	2,846	109.88 USD	$312.7K		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	ExerciseD (derivative)	-15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	Exercise	16,997	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	Exercise	15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	ExerciseD (derivative)	-16,997	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	Sell	-31,997	100.34 USD	$3.2M		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2022	AwardD (derivative)	13,592	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Coherus Oncology, Inc.Listing on record	Jun 9, 2026	Award	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Coherus Oncology, Inc.Listing on record	Jun 9, 2026	AwardD (derivative)	60,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Coherus Oncology, Inc.Listing on record	Jun 13, 2025	AwardD (derivative)	112,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Coherus Oncology, Inc.Listing on record	Jun 5, 2024	AwardD (derivative)	168,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Other	-276	117.89 USD	$32.5K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	ExerciseD (derivative)	-949	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Other	-326	118.22 USD	$38.5K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Sell	-15,875	117.53 USD	$1.9M		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Exercise	803	117.89 USD	$94.7K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	ExerciseD (derivative)	-15,875	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	ExerciseD (derivative)	-803	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Exercise	15,875	62.07 USD	$985.4K	Unusual size	SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2023	Exercise	949	118.22 USD	$112.2K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 4, 2023	AwardD (derivative)	9,682	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 4, 2023	AwardD (derivative)	1,781	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 3, 2023	Exercise	930	115.47 USD	$107.4K		SEC
MERCK SHARP & DOHME LLCListing unverified	May 3, 2023	ExerciseD (derivative)	-930	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	May 3, 2023	Other	-319	115.47 USD	$36.8K		SEC
MERCK SHARP & DOHME LLCListing unverified	Jan 25, 2023	Award	2,846	109.88 USD	$312.7K		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	ExerciseD (derivative)	-15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	Exercise	16,997	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	Exercise	15,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	ExerciseD (derivative)	-16,997	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MERCK SHARP & DOHME LLCListing unverified	Nov 1, 2022	Sell	-31,997	100.34 USD	$3.2M		SEC
MERCK SHARP & DOHME LLCListing unverified	May 5, 2022	AwardD (derivative)	13,592	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC