Winzeler Jeffrey G

10% owner at SPI Energy Co., Ltd. · on record since Jan 6, 2010
Chief Financial Officer at Ambiq Micro, Inc. · on record since Apr 2, 2026
Chief financial Officer at SPI Energy Co., Ltd. · on record since Jul 25, 2011
Chief Financial Officer at Silicon Graphics International Corp · on record since Mar 21, 2012
Chief Financial Officer at EVERSPIN TECHNOLOGIES INC. · on record since Dec 20, 2016
Chief Financial Officer at INTERNATIONAL DISPLAYWORKS, INC · on record since Jan 6, 2005

Insider trading activity of Winzeler Jeffrey G

Transactions on record: 39; since Jun 13, 2005

Open-market buys: 3; $32.7K

Open-market sells: 7; $2.2M

Companies traded: 4; last filing Jun 4, 2026

Figures computed from official regulatory filings — .

Companies where Winzeler Jeffrey G has traded

Ambiq Micro, Inc.11 tx · $2.5M · Jun 4, 2026
EVERSPIN TECHNOLOGIES INC.7 tx · $6.9K · Mar 28, 2019
SPI Energy Co., Ltd.10 tx · $213.2K · Jul 25, 2011
INTERNATIONAL DISPLAYWORKS, INC11 tx · $489.4K · Dec 4, 2006

Track record of Winzeler Jeffrey G

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

Transaction history of Winzeler Jeffrey G

Co-insiders of Winzeler Jeffrey G

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Ambiq Micro, Inc.Listing unverified	Jun 4, 2026	ExerciseD (derivative)	-5,952	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	Jun 4, 2026	Exercise	5,952	16.80 USD	$100K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Exercise	5,952	16.80 USD	$100K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	ExerciseD (derivative)	-5,952	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Exercise	26,000	16.80 USD	$436.8K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	ExerciseD (derivative)	-26,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Sell	-82	70.65 USD	$5.8K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Sell	-25,918	69.90 USD	$1.8M	Unusual size	SEC
Ambiq Micro, Inc.Listing unverified	Apr 2, 2026	Award	41,728	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	Mar 10, 2026	Award	41,728	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	Oct 6, 2025	Award	52,667	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Mar 28, 2019	Sell	-819	8.45 USD	$6.9K		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Feb 13, 2019	AwardD (derivative)	20,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Feb 13, 2019	Award	5,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Mar 15, 2018	Award	10,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Mar 15, 2018	AwardD (derivative)	40,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Dec 20, 2016	AwardD (derivative)	24,313	—	n/a (No price was disclosed in the filing)		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Dec 20, 2016	OtherD (derivative)	-24,313	—	n/a (No price was disclosed in the filing)		SEC
SPI Energy Co., Ltd.Listing unverified	Jul 25, 2011	AwardD (derivative)	750,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Jan 6, 2010	AwardD (derivative)	100,000	1.24	$124K	Unusual size	SEC
SPI Energy Co., Ltd.Listing unverified	Apr 14, 2009	AwardD (derivative)	10,000	0.00	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Jan 6, 2009	AwardD (derivative)	100,000	0.00	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Jan 6, 2009	AwardD (derivative)	100,000	0.00	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Aug 18, 2008	Award	6,965	1.42	$9.9K		SEC
SPI Energy Co., Ltd.Listing unverified	Aug 18, 2008	Award	3,035	1.42	$4.3K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Ambiq Micro, Inc.Listing unverified	Jun 4, 2026	ExerciseD (derivative)	-5,952	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	Jun 4, 2026	Exercise	5,952	16.80 USD	$100K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Exercise	5,952	16.80 USD	$100K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	ExerciseD (derivative)	-5,952	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Exercise	26,000	16.80 USD	$436.8K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	ExerciseD (derivative)	-26,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Sell	-82	70.65 USD	$5.8K		SEC
Ambiq Micro, Inc.Listing unverified	May 18, 2026	Sell	-25,918	69.90 USD	$1.8M	Unusual size	SEC
Ambiq Micro, Inc.Listing unverified	Apr 2, 2026	Award	41,728	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	Mar 10, 2026	Award	41,728	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Ambiq Micro, Inc.Listing unverified	Oct 6, 2025	Award	52,667	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Mar 28, 2019	Sell	-819	8.45 USD	$6.9K		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Feb 13, 2019	AwardD (derivative)	20,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Feb 13, 2019	Award	5,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Mar 15, 2018	Award	10,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Mar 15, 2018	AwardD (derivative)	40,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Dec 20, 2016	AwardD (derivative)	24,313	—	n/a (No price was disclosed in the filing)		SEC
EVERSPIN TECHNOLOGIES INC.Listing on record	Dec 20, 2016	OtherD (derivative)	-24,313	—	n/a (No price was disclosed in the filing)		SEC
SPI Energy Co., Ltd.Listing unverified	Jul 25, 2011	AwardD (derivative)	750,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Jan 6, 2010	AwardD (derivative)	100,000	1.24	$124K	Unusual size	SEC
SPI Energy Co., Ltd.Listing unverified	Apr 14, 2009	AwardD (derivative)	10,000	0.00	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Jan 6, 2009	AwardD (derivative)	100,000	0.00	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Jan 6, 2009	AwardD (derivative)	100,000	0.00	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPI Energy Co., Ltd.Listing unverified	Aug 18, 2008	Award	6,965	1.42	$9.9K		SEC
SPI Energy Co., Ltd.Listing unverified	Aug 18, 2008	Award	3,035	1.42	$4.3K		SEC