Harrington Robert Arthur

Director at CYTOKINETICS INC · on record since Apr 15, 2026

Insider trading activity of Harrington Robert Arthur

Transactions on record: 31; since Apr 18, 2022

Open-market buys: 0

Open-market sells: 6; $394.9K

Companies traded: 1; last filing Jul 16, 2026

Figures computed from official regulatory filings — .

Companies where Harrington Robert Arthur has traded

CYTOKINETICS INC31 tx · $2M · Jul 16, 2026

Track record of Harrington Robert Arthur

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

Transaction history of Harrington Robert Arthur

Co-insiders of Harrington Robert Arthur

AUKEN WENDELL G VAN IIICYTOKINETICS INC
BARBARI SHARON SURREYCYTOKINETICS INC
BAYLESS JON WCYTOKINETICS INC
Bhanji MunaCYTOKINETICS INC
BIOTECHNOLOGY VALUE FUND II LPCYTOKINETICS INC
BIOTECHNOLOGY VALUE FUND L PCYTOKINETICS INC
Biotechnology Value Trading Fund OS LPCYTOKINETICS INC
Blum Robert ICYTOKINETICS INC
BVF GP HOLDINGS LLCCYTOKINETICS INC
BVF I GP LLCCYTOKINETICS INC
BVF II GP LLCCYTOKINETICS INC
BVF INC/ILCYTOKINETICS INC
BVF PARTNERS L P/ILCYTOKINETICS INC
BVF Partners OS Ltd.CYTOKINETICS INC
Califf RobertCYTOKINETICS INC
Callos AndrewCYTOKINETICS INC
CHARPENTIER BONNIECYTOKINETICS INC
COSTA SANTO JCYTOKINETICS INC
Cragg DavidCYTOKINETICS INC
CREDIT SUISSE/CYTOKINETICS INC
CREDIT SUISSE FIRST BOSTON ADVISORY PARTNERS, LLCCYTOKINETICS INC
CREDIT SUISSE FIRST BOSTON (BERMUDA) LTDCYTOKINETICS INC
CREDIT SUISSE FIRST BOSTON EQUITY PARTNERS (BERMUDA), L.P.CYTOKINETICS INC
CREDIT SUISSE FIRST BOSTON EQUITY PARTNERS, L.P.CYTOKINETICS INC
CREDIT SUISSE FIRST BOSTON U.S. EXECUTIVE ADVISORS, L.P.CYTOKINETICS INC
DALAL YOGEN KCYTOKINETICS INC
Daly James MCYTOKINETICS INC
DART KENNETH BRYANCYTOKINETICS INC
DOMENIK STEPHEN LCYTOKINETICS INC
DOW STEPHEN MCYTOKINETICS INC
Eastern Capital LTDCYTOKINETICS INC

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
CYTOKINETICS INCListing on record	Jul 16, 2026	Award	151	82.62 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	May 27, 2026	Award	2,851	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	May 27, 2026	AwardD (derivative)	4,301	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Apr 15, 2026	Award	191	65.37 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Jan 16, 2026	Award	197	63.44 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Dec 2, 2025	Sell	-2,150	66.80 USD	$143.6K	Unusual size	SEC
CYTOKINETICS INCListing on record	Oct 16, 2025	Award	199	62.80 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Sep 2, 2025	Sell	-2,150	48.67 USD	$104.6K	Unusual size	SEC
CYTOKINETICS INCListing on record	Jul 16, 2025	Award	328	38.01 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	May 19, 2025	Award	7,333	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	May 19, 2025	AwardD (derivative)	10,880	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Apr 16, 2025	Award	324	38.56 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Apr 4, 2025	Sell	-450	39.43 USD	$17.7K		SEC
CYTOKINETICS INCListing on record	Mar 4, 2025	Sell	-900	42.50 USD	$38.3K		SEC
CYTOKINETICS INCListing on record	Jan 6, 2025	Award	255	48.93 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Oct 3, 2024	Award	237	52.60 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Jul 8, 2024	Sell	-253	54.61 USD	$13.8K		SEC
CYTOKINETICS INCListing on record	Jul 3, 2024	Award	228	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Jun 5, 2024	Sell	-1,580	48.64 USD	$76.9K		SEC
CYTOKINETICS INCListing on record	May 16, 2024	AwardD (derivative)	3,636	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	May 16, 2024	Award	5,600	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Jan 3, 2024	Award	148	84.12 USD	$12.4K		SEC
CYTOKINETICS INCListing on record	Oct 3, 2023	Award	448	27.88 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Jul 5, 2023	Award	374	33.36 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	May 18, 2023	AwardD (derivative)	10,000	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
CYTOKINETICS INCListing on record	Jul 16, 2026	Award	151	82.62 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	May 27, 2026	Award	2,851	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	May 27, 2026	AwardD (derivative)	4,301	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Apr 15, 2026	Award	191	65.37 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Jan 16, 2026	Award	197	63.44 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Dec 2, 2025	Sell	-2,150	66.80 USD	$143.6K	Unusual size	SEC
CYTOKINETICS INCListing on record	Oct 16, 2025	Award	199	62.80 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Sep 2, 2025	Sell	-2,150	48.67 USD	$104.6K	Unusual size	SEC
CYTOKINETICS INCListing on record	Jul 16, 2025	Award	328	38.01 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	May 19, 2025	Award	7,333	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	May 19, 2025	AwardD (derivative)	10,880	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Apr 16, 2025	Award	324	38.56 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Apr 4, 2025	Sell	-450	39.43 USD	$17.7K		SEC
CYTOKINETICS INCListing on record	Mar 4, 2025	Sell	-900	42.50 USD	$38.3K		SEC
CYTOKINETICS INCListing on record	Jan 6, 2025	Award	255	48.93 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Oct 3, 2024	Award	237	52.60 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Jul 8, 2024	Sell	-253	54.61 USD	$13.8K		SEC
CYTOKINETICS INCListing on record	Jul 3, 2024	Award	228	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Jun 5, 2024	Sell	-1,580	48.64 USD	$76.9K		SEC
CYTOKINETICS INCListing on record	May 16, 2024	AwardD (derivative)	3,636	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	May 16, 2024	Award	5,600	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
CYTOKINETICS INCListing on record	Jan 3, 2024	Award	148	84.12 USD	$12.4K		SEC
CYTOKINETICS INCListing on record	Oct 3, 2023	Award	448	27.88 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	Jul 5, 2023	Award	374	33.36 USD	$12.5K		SEC
CYTOKINETICS INCListing on record	May 18, 2023	AwardD (derivative)	10,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC