BROOKS STEVEN D

Director at COGENT COMMUNICATIONS HOLDINGS, INC. · on record since Jan 31, 2006
Director at PROXIM CORP · on record since Aug 11, 2003
10% owner at COGENT COMMUNICATIONS HOLDINGS, INC. · on record since Aug 13, 2003
Director at PHARSIGHT CORP · on record since Nov 10, 2003
10% owner at PROXIM CORP · on record since Dec 16, 2003

Insider trading activity of BROOKS STEVEN D

Transactions on record: 150; since Aug 13, 2003

Open-market buys: 2; $122.8K

Open-market sells: 22; $17.5M

Companies traded: 3; last filing Sep 30, 2026

Figures computed from official regulatory filings — .

Companies where BROOKS STEVEN D has traded

COGENT COMMUNICATIONS HOLDINGS, INC.120 tx · $50.6M · Sep 30, 2026
PHARSIGHT CORP13 tx · $94.9K · Nov 18, 2004
PROXIM CORP17 tx · Oct 25, 2004

Track record of BROOKS STEVEN D

Statistical track record

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Open-market buys: 5

Last buy: Jan 5, 2010

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Transaction history of BROOKS STEVEN D

Co-insiders of BROOKS STEVEN D

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Sep 30, 2026	Award	3,445	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 1, 2026	Award	3,445	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Mar 31, 2026	Award	3,445	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 5, 2026	Award	3,388	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 1, 2025	Award	2,395	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 1, 2025	Award	1,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Mar 31, 2025	Award	1,352	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 22, 2025	Gift	-299	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 3, 2025	Award	1,254	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 22, 2024	Award	1,452	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 1, 2024	Award	1,452	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 2, 2024	Award	1,675	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 2, 2024	Gift	-300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 1, 2024	Award	1,370	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 3, 2024	Award	1,403	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 3, 2024	Award	1,403	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 3, 2023	Award	1,433	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 2, 2023	Award	1,709	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 5, 2023	Award	1,435	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jun 16, 2023	Sell	-4,202	65.00 USD	$273.1K	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	May 12, 2023	Sell	-3,798	65.00 USD	$246.9K	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 5, 2023	Award	1,456	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 3, 2022	Award	1,626	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 5, 2022	Award	1,524	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 1, 2022	Award	1,462	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	Src
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Sep 30, 2026	Award	3,445	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 1, 2026	Award	3,445	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Mar 31, 2026	Award	3,445	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 5, 2026	Award	3,388	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 1, 2025	Award	2,395	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 1, 2025	Award	1,968	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Mar 31, 2025	Award	1,352	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 22, 2025	Gift	-299	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 3, 2025	Award	1,254	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 22, 2024	Award	1,452	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 1, 2024	Award	1,452	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 2, 2024	Award	1,675	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 2, 2024	Gift	-300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 1, 2024	Award	1,370	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 3, 2024	Award	1,403	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jan 3, 2024	Award	1,403	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 3, 2023	Award	1,433	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 2, 2023	Award	1,709	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 5, 2023	Award	1,435	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jun 16, 2023	Sell	-4,202	65.00 USD	$273.1K	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	May 12, 2023	Sell	-3,798	65.00 USD	$246.9K	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 5, 2023	Award	1,456	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Oct 3, 2022	Award	1,626	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Jul 5, 2022	Award	1,524	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COGENT COMMUNICATIONS HOLDINGS, INC.Listing on record	Apr 1, 2022	Award	1,462	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC