SEIF MARGARET K

Sr VP & Gen. Counsel at RSA SECURITY INC/DE/ · on record since Aug 1, 2003
Director at KOPIN CORP · on record since Jun 12, 2026
SVP, CPO and CLO at ANALOG DEVICES INC · on record since Apr 1, 2019

Insider trading activity of SEIF MARGARET K

Transactions on record: 600; since Aug 1, 2003

Open-market buys: 0

Open-market sells: 98; $24M

Companies traded: 3; last filing Jun 12, 2026

Figures computed from official regulatory filings — .

Companies where SEIF MARGARET K has traded

KOPIN CORP3 tx · Jun 12, 2026
ANALOG DEVICES INC523 tx · $34.5M · Apr 1, 2019
RSA SECURITY INC/DE/74 tx · $3.7M · Aug 3, 2005

Track record of SEIF MARGARET K

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

Transaction history of SEIF MARGARET K

Co-insiders of SEIF MARGARET K

ALMEIDA JOSE EANALOG DEVICES INC
Anchin Scott LKOPIN CORP
Andonian Andre'ANALOG DEVICES INC
Avery Jill JaniceKOPIN CORP
BADAVAS ROBERT PRSA SECURITY INC/DE/
Baker Paul ChristopherKOPIN CORP
Bandanza James CRSA SECURITY INC/DE/
BEYER RICHARD MANALOG DEVICES INC
Brennan Seamus M.ANALOG DEVICES INC
BREWINGTON JAMES KKOPIN CORP
BROOK DAVIDKOPIN CORP
Bryant Gregory MANALOG DEVICES INC
CHAMPY JAMESANALOG DEVICES INC
Chandrakasan Anantha P.ANALOG DEVICES INC
CHAPMAN ANDREWKOPIN CORP
CHOI HONG KKOPIN CORP
COLLINS MORTONKOPIN CORP
Cotter MartinANALOG DEVICES INC

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
KOPIN CORPListing on record	Jun 12, 2026	Award	64,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KOPIN CORPListing on record	Jun 27, 2025	Award	64,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KOPIN CORPListing on record	Sep 3, 2024	Award	64,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Apr 1, 2019	Exercise	1,224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Apr 1, 2019	ExerciseD (derivative)	-1,224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Apr 1, 2019	Other	-544	105.27 USD	$57.3K		SEC
ANALOG DEVICES INCListing on record	Mar 26, 2019	ExerciseD (derivative)	-5,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 26, 2019	Other	-2,650	105.25 USD	$278.9K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Mar 26, 2019	Exercise	5,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	2,418	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	10,705	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	2,418	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	2,418	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 13, 2019	Other	-2,206	107.68 USD	$237.5K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Mar 11, 2019	Exercise	6,560	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 11, 2019	ExerciseD (derivative)	-6,560	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	374	51.73 USD	$19.3K		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Sell	-7,415	107.34 USD	$795.9K		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	860	46.48 USD	$40K		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	1,198	57.29 USD	$68.6K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	ExerciseD (derivative)	-374	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	ExerciseD (derivative)	-1,198	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	ExerciseD (derivative)	-860	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	4,691	83.48 USD	$391.6K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	292	54.93 USD	$16K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
KOPIN CORPListing on record	Jun 12, 2026	Award	64,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KOPIN CORPListing on record	Jun 27, 2025	Award	64,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
KOPIN CORPListing on record	Sep 3, 2024	Award	64,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Apr 1, 2019	Exercise	1,224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Apr 1, 2019	ExerciseD (derivative)	-1,224	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Apr 1, 2019	Other	-544	105.27 USD	$57.3K		SEC
ANALOG DEVICES INCListing on record	Mar 26, 2019	ExerciseD (derivative)	-5,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 26, 2019	Other	-2,650	105.25 USD	$278.9K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Mar 26, 2019	Exercise	5,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	2,418	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	10,705	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	2,418	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 15, 2019	AwardD (derivative)	2,418	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 13, 2019	Other	-2,206	107.68 USD	$237.5K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Mar 11, 2019	Exercise	6,560	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Mar 11, 2019	ExerciseD (derivative)	-6,560	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	374	51.73 USD	$19.3K		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Sell	-7,415	107.34 USD	$795.9K		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	860	46.48 USD	$40K		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	1,198	57.29 USD	$68.6K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	ExerciseD (derivative)	-374	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	ExerciseD (derivative)	-1,198	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	ExerciseD (derivative)	-860	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	4,691	83.48 USD	$391.6K	Unusual size	SEC
ANALOG DEVICES INCListing on record	Feb 26, 2019	Exercise	292	54.93 USD	$16K		SEC