BUZBY DAVID S

Director at CONVERSANT, INC. · on record since Sep 15, 2006
See Remarks at STEM, INC. · on record since Aug 30, 2024
Director at General Fusion Group Ltd. · on record since Sep 3, 2025
Director at ECO2 PLASTICS INC · on record since Jun 16, 2008
Director at Spring Valley Acquisition Corp. IV · on record since Feb 9, 2026
Director at STEM, INC. · on record since Jun 4, 2026
Director at CONVERA Corp · on record since Apr 28, 2014
Director at Spring Valley Acquisition Corp. II · on record since Oct 12, 2022

Insider trading activity of BUZBY DAVID S

Transactions on record: 124; since Aug 5, 2003

Open-market buys: 33; $2M

Open-market sells: 16; $11.5M

Companies traded: 5; last filing Aug 11, 2026

Figures computed from official regulatory filings — .

Companies where BUZBY DAVID S has traded

STEM, INC.38 tx · $4.1M · Aug 11, 2026
Spring Valley Acquisition Corp. II3 tx · Feb 26, 2026
CONVERA Corp12 tx · $1.2M · Dec 10, 2014
CONVERSANT, INC.68 tx · $10.2M · Jan 31, 2013
ECO2 PLASTICS INC3 tx · Dec 3, 2009

Track record of BUZBY DAVID S

Statistical track record

Free account

Open-market buys: 36

Last buy: Mar 18, 2024

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of BUZBY DAVID S

Co-insiders of BUZBY DAVID S

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
STEM, INC.Listing on record	Aug 11, 2026	ExerciseD (derivative)	-7,486	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Aug 11, 2026	Exercise	7,486	—	n/a (No price was disclosed in the filing)		SEC
STEM, INC.Listing on record	Jun 4, 2026	AwardD (derivative)	12,168	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Spring Valley Acquisition Corp. IIListing unverified	Feb 26, 2026	Other	-40,000	—	n/a (No price was disclosed in the filing)		SEC
STEM, INC.Listing on record	Jul 8, 2025	Gift	-5,511	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jul 8, 2025	Gift	5,511	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 6, 2025	AwardD (derivative)	149,723	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 2, 2025	Exercise	110,236	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 2, 2025	ExerciseD (derivative)	-110,236	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jan 16, 2025	AwardD (derivative)	66,667	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Aug 30, 2024	AwardD (derivative)	400,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	ExerciseD (derivative)	-23,489	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	Buy	62,500	1.84 USD	$115K	conv 64Cluster	SEC
STEM, INC.Listing on record	Jun 10, 2024	Gift	-20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	Exercise	23,489	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	Buy	33,800	1.81 USD	$61.2K	conv 57Cluster	SEC
STEM, INC.Listing on record	Jun 10, 2024	Gift	20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	May 30, 2024	AwardD (derivative)	110,236	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Mar 20, 2024	Buy	33,800	1.81 USD	$61.2K	conv 46Cluster	SEC
Spring Valley Acquisition Corp. IIListing unverified	Jan 29, 2024	OtherD (derivative)	-40,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Spring Valley Acquisition Corp. IIListing unverified	Jan 29, 2024	Other	40,000	—	n/a (No price was disclosed in the filing)		SEC
STEM, INC.Listing on record	Sep 18, 2023	Buy	62,000	4.82 USD	$298.8K	conv 68Unusual sizeFirst in 12mo	SEC
STEM, INC.Listing on record	Jun 20, 2023	ExerciseD (derivative)	-20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 20, 2023	Exercise	20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 8, 2023	AwardD (derivative)	23,489	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
STEM, INC.Listing on record	Aug 11, 2026	ExerciseD (derivative)	-7,486	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Aug 11, 2026	Exercise	7,486	—	n/a (No price was disclosed in the filing)		SEC
STEM, INC.Listing on record	Jun 4, 2026	AwardD (derivative)	12,168	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Spring Valley Acquisition Corp. IIListing unverified	Feb 26, 2026	Other	-40,000	—	n/a (No price was disclosed in the filing)		SEC
STEM, INC.Listing on record	Jul 8, 2025	Gift	-5,511	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jul 8, 2025	Gift	5,511	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 6, 2025	AwardD (derivative)	149,723	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 2, 2025	Exercise	110,236	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 2, 2025	ExerciseD (derivative)	-110,236	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jan 16, 2025	AwardD (derivative)	66,667	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Aug 30, 2024	AwardD (derivative)	400,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	ExerciseD (derivative)	-23,489	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	Buy	62,500	1.84 USD	$115K	conv 64Cluster	SEC
STEM, INC.Listing on record	Jun 10, 2024	Gift	-20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	Exercise	23,489	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 10, 2024	Buy	33,800	1.81 USD	$61.2K	conv 57Cluster	SEC
STEM, INC.Listing on record	Jun 10, 2024	Gift	20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	May 30, 2024	AwardD (derivative)	110,236	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Mar 20, 2024	Buy	33,800	1.81 USD	$61.2K	conv 46Cluster	SEC
Spring Valley Acquisition Corp. IIListing unverified	Jan 29, 2024	OtherD (derivative)	-40,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Spring Valley Acquisition Corp. IIListing unverified	Jan 29, 2024	Other	40,000	—	n/a (No price was disclosed in the filing)		SEC
STEM, INC.Listing on record	Sep 18, 2023	Buy	62,000	4.82 USD	$298.8K	conv 68Unusual sizeFirst in 12mo	SEC
STEM, INC.Listing on record	Jun 20, 2023	ExerciseD (derivative)	-20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 20, 2023	Exercise	20,498	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
STEM, INC.Listing on record	Jun 8, 2023	AwardD (derivative)	23,489	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC