BARRETT MICHAEL G.

EVP and Chief Revenue Officer at ALTABA INC. · on record since Jul 30, 2012
Director at MAGNITE, INC. · on record since May 19, 2026
CEO at MAGNITE, INC. · on record since May 19, 2026
Director at Telaria, Inc. · on record since Oct 1, 2013
Director at Millennial Media Inc. · on record since Jan 28, 2014
President and CEO at Millennial Media Inc. · on record since Jan 28, 2014
Director at OUTFRONT Media Inc. · on record since Jun 4, 2026
Director at Rubico Inc. · on record since Apr 26, 2017
CEO at Rubico Inc. · on record since Mar 21, 2017

Insider trading activity of BARRETT MICHAEL G.

Transactions on record: 135; since Jul 30, 2012

Open-market buys: 3; $1.3M

Open-market sells: 45; $48.7M

Companies traded: 6; last filing Sep 21, 2026

Figures computed from official regulatory filings — .

Companies where BARRETT MICHAEL G. has traded

OUTFRONT Media Inc.5 tx · Sep 21, 2026
MAGNITE, INC.93 tx · $58M · Aug 18, 2026
Rubico Inc.22 tx · $3.7M · Jun 5, 2020
Millennial Media Inc.11 tx · $5.5M · Oct 23, 2015
Telaria, Inc.2 tx · Oct 1, 2013
ALTABA INC.2 tx · Jul 30, 2012

Track record of BARRETT MICHAEL G.

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

Transaction history of BARRETT MICHAEL G.

Co-insiders of BARRETT MICHAEL G.

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
OUTFRONT Media Inc.Listing on record	Sep 21, 2026	Exercise	6,047	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
OUTFRONT Media Inc.Listing on record	Sep 21, 2026	Award	265	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
OUTFRONT Media Inc.Listing on record	Sep 21, 2026	ExerciseD (derivative)	-6,047	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Aug 18, 2026	Other	-10,404	24.73 USD	$257.3K		SEC
MAGNITE, INC.Listing on record	Aug 7, 2026	Exercise	293,968	5.80 USD	$1.7M	Unusual size	SEC
MAGNITE, INC.Listing on record	Aug 7, 2026	Sell	-293,968	22.72 USD	$6.7M	Unusual size	SEC
MAGNITE, INC.Listing on record	Aug 7, 2026	ExerciseD (derivative)	-293,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jul 17, 2026	Sell	-38,596	20.35 USD	$785.4K		SEC
MAGNITE, INC.Listing on record	Jul 17, 2026	ExerciseD (derivative)	-38,596	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jul 17, 2026	Exercise	38,596	5.80 USD	$223.9K		SEC
MAGNITE, INC.Listing on record	Jul 1, 2026	Exercise	75,000	5.80 USD	$435K		SEC
MAGNITE, INC.Listing on record	Jul 1, 2026	Sell	-75,000	19.50 USD	$1.5M		SEC
MAGNITE, INC.Listing on record	Jul 1, 2026	ExerciseD (derivative)	-75,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Exercise	100,000	5.80 USD	$580K		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Exercise	178,596	5.80 USD	$1M		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	ExerciseD (derivative)	-178,596	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Sell	-178,596	16.59 USD	$3M		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	ExerciseD (derivative)	-100,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Sell	-100,000	17.50 USD	$1.8M		SEC
OUTFRONT Media Inc.Listing on record	Jun 4, 2026	AwardD (derivative)	5,918	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	May 19, 2026	Other	-10,404	12.82 USD	$133.4K		SEC
MAGNITE, INC.Listing on record	Feb 18, 2026	Other	-23,549	11.70 USD	$275.5K		SEC
MAGNITE, INC.Listing on record	Jan 12, 2026	Exercise	213,750	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jan 12, 2026	ExerciseD (derivative)	-213,750	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jan 12, 2026	Other	-109,742	16.17 USD	$1.8M	Unusual size	SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
OUTFRONT Media Inc.Listing on record	Sep 21, 2026	Exercise	6,047	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
OUTFRONT Media Inc.Listing on record	Sep 21, 2026	Award	265	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
OUTFRONT Media Inc.Listing on record	Sep 21, 2026	ExerciseD (derivative)	-6,047	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Aug 18, 2026	Other	-10,404	24.73 USD	$257.3K		SEC
MAGNITE, INC.Listing on record	Aug 7, 2026	Exercise	293,968	5.80 USD	$1.7M	Unusual size	SEC
MAGNITE, INC.Listing on record	Aug 7, 2026	Sell	-293,968	22.72 USD	$6.7M	Unusual size	SEC
MAGNITE, INC.Listing on record	Aug 7, 2026	ExerciseD (derivative)	-293,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jul 17, 2026	Sell	-38,596	20.35 USD	$785.4K		SEC
MAGNITE, INC.Listing on record	Jul 17, 2026	ExerciseD (derivative)	-38,596	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jul 17, 2026	Exercise	38,596	5.80 USD	$223.9K		SEC
MAGNITE, INC.Listing on record	Jul 1, 2026	Exercise	75,000	5.80 USD	$435K		SEC
MAGNITE, INC.Listing on record	Jul 1, 2026	Sell	-75,000	19.50 USD	$1.5M		SEC
MAGNITE, INC.Listing on record	Jul 1, 2026	ExerciseD (derivative)	-75,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Exercise	100,000	5.80 USD	$580K		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Exercise	178,596	5.80 USD	$1M		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	ExerciseD (derivative)	-178,596	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Sell	-178,596	16.59 USD	$3M		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	ExerciseD (derivative)	-100,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jun 17, 2026	Sell	-100,000	17.50 USD	$1.8M		SEC
OUTFRONT Media Inc.Listing on record	Jun 4, 2026	AwardD (derivative)	5,918	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	May 19, 2026	Other	-10,404	12.82 USD	$133.4K		SEC
MAGNITE, INC.Listing on record	Feb 18, 2026	Other	-23,549	11.70 USD	$275.5K		SEC
MAGNITE, INC.Listing on record	Jan 12, 2026	Exercise	213,750	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jan 12, 2026	ExerciseD (derivative)	-213,750	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
MAGNITE, INC.Listing on record	Jan 12, 2026	Other	-109,742	16.17 USD	$1.8M	Unusual size	SEC