O'Dowd Sarah A

Chief Legal Officer & SVP at LAM RESEARCH CORP · on record since Feb 13, 2019
Director at ICHOR HOLDINGS, LTD. · on record since May 14, 2020
Director at Protagonist Therapeutics, Inc · on record since Aug 18, 2020

Insider trading activity of O'Dowd Sarah A

Transactions on record: 111; since Oct 27, 2008

Open-market buys: 0

Open-market sells: 19; $15M

Companies traded: 3; last filing Jan 6, 2026

Figures computed from official regulatory filings — .

Companies where O'Dowd Sarah A has traded

Protagonist Therapeutics, Inc9 tx · Jan 6, 2026
ICHOR HOLDINGS, LTD.6 tx · May 17, 2024
LAM RESEARCH CORP96 tx · $34.3M · Dec 23, 2019

Track record of O'Dowd Sarah A

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

Transaction history of O'Dowd Sarah A

Co-insiders of O'Dowd Sarah A

Adage Capital Advisors, L.L.C.Protagonist Therapeutics, Inc
ADAGE CAPITAL PARTNERS GP LLCProtagonist Therapeutics, Inc
ADAGE CAPITAL PARTNERS LPProtagonist Therapeutics, Inc
Ahmed Sohail ULAM RESEARCH CORP
Ali AsifProtagonist Therapeutics, Inc
Andreson JeffICHOR HOLDINGS, LTD.
Anstice Martin BLAM RESEARCH CORP
ARCHER TIMOTHYLAM RESEARCH CORP
Arienzo WendyICHOR HOLDINGS, LTD.
ARSCOTT DAVID GLAM RESEARCH CORP
Atchinson RobertProtagonist Therapeutics, Inc
BAGLEY JAMES WLAM RESEARCH CORP
BARROS PHILIP RYAN SR.ICHOR HOLDINGS, LTD.
BERDAHL ROBERT MLAM RESEARCH CORP
Bettinger Douglas RLAM RESEARCH CORP
Black Laura A.ICHOR HOLDINGS, LTD.
Bondur Thomas JLAM RESEARCH CORP
BRANDT ERICLAM RESEARCH CORP

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	Award	2,695	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	AwardD (derivative)	3,762	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	Award	5,130	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	AwardD (derivative)	6,584	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 17, 2024	Award	3,923	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 4, 2024	AwardD (derivative)	25,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 22, 2023	Award	4,752	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 18, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	May 27, 2022	AwardD (derivative)	20,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 26, 2022	Award	5,635	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	May 28, 2021	AwardD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 14, 2021	Award	2,526	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Aug 18, 2020	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 14, 2020	Award	6,893	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 14, 2020	Award	4,596	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
LAM RESEARCH CORPListing on record	Dec 23, 2019	Sell	-3,831	287.80 USD	$1.1M		SEC
LAM RESEARCH CORPListing on record	Sep 13, 2019	ExerciseD (derivative)	-22,140	42.61 USD	$943.4K		SEC
LAM RESEARCH CORPListing on record	Sep 13, 2019	Exercise	22,140	42.61 USD	$943.4K		SEC
LAM RESEARCH CORPListing on record	Sep 13, 2019	Sell	-22,140	233.77 USD	$5.2M	Unusual size	SEC
LAM RESEARCH CORPListing on record	Sep 9, 2019	Sell	-5,000	229.08 USD	$1.1M		SEC
LAM RESEARCH CORPListing on record	Sep 9, 2019	Gift	-3,646	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Award	2,230	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Other	-4,733	176.75 USD	$836.6K		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Other	-1,004	176.75 USD	$177.5K		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Other	-799	176.75 USD	$141.2K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	Award	2,695	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2026	AwardD (derivative)	3,762	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	Award	5,130	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 6, 2025	AwardD (derivative)	6,584	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 17, 2024	Award	3,923	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 4, 2024	AwardD (derivative)	25,700	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 22, 2023	Award	4,752	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Jan 18, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	May 27, 2022	AwardD (derivative)	20,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 26, 2022	Award	5,635	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	May 28, 2021	AwardD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 14, 2021	Award	2,526	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Protagonist Therapeutics, IncListing on record	Aug 18, 2020	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 14, 2020	Award	6,893	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ICHOR HOLDINGS, LTD.Listing on record	May 14, 2020	Award	4,596	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
LAM RESEARCH CORPListing on record	Dec 23, 2019	Sell	-3,831	287.80 USD	$1.1M		SEC
LAM RESEARCH CORPListing on record	Sep 13, 2019	ExerciseD (derivative)	-22,140	42.61 USD	$943.4K		SEC
LAM RESEARCH CORPListing on record	Sep 13, 2019	Exercise	22,140	42.61 USD	$943.4K		SEC
LAM RESEARCH CORPListing on record	Sep 13, 2019	Sell	-22,140	233.77 USD	$5.2M	Unusual size	SEC
LAM RESEARCH CORPListing on record	Sep 9, 2019	Sell	-5,000	229.08 USD	$1.1M		SEC
LAM RESEARCH CORPListing on record	Sep 9, 2019	Gift	-3,646	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Award	2,230	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Other	-4,733	176.75 USD	$836.6K		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Other	-1,004	176.75 USD	$177.5K		SEC
LAM RESEARCH CORPListing on record	Mar 5, 2019	Other	-799	176.75 USD	$141.2K		SEC