FISHER RONALD D

Director at Prism Technologies Group, Inc. · on record since Jul 2, 2003
Director at GSI COMMERCE INC · on record since Aug 20, 2009
10% owner at GSI COMMERCE INC · on record since Aug 20, 2009
Director at ARM HOLDINGS PLC /UK · on record since May 19, 2026
Director at SPRINT LLC · on record since Jul 12, 2013
Director at T-Mobile US, Inc. · on record since Apr 13, 2020

Insider trading activity of FISHER RONALD D

Transactions on record: 46; since Sep 9, 2003

Open-market buys: 1; $36.1M

Open-market sells: 3; $135.9M

Companies traded: 4; last filing May 19, 2026

Figures computed from official regulatory filings — .

Companies where FISHER RONALD D has traded

ARM HOLDINGS PLC /UK1 tx · May 19, 2026
T-Mobile US, Inc.1 tx · $36.1M · Jun 30, 2020
SPRINT LLC26 tx · $34.7M · Apr 2, 2020
GSI COMMERCE INC18 tx · $135.8M · Jun 21, 2011

Track record of FISHER RONALD D

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

Transaction history of FISHER RONALD D

Co-insiders of FISHER RONALD D

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ARM HOLDINGS PLC /UKListing on record	May 19, 2026	AwardD (derivative)	1,531	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
T-Mobile US, Inc.Listing on record	Jun 30, 2020	Buy	350,000	103.00 USD	$36.1M	conv 42First in 12mo	SEC
SPRINT LLCListing unverified	Apr 2, 2020	Other	-2,161,388	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Aug 5, 2019	Award	69,638	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 19, 2018	Award	81,566	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 19, 2018	Other	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 19, 2018	OtherD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 19, 2018	Sell	-327,525	6.20 USD	$2M		SEC
SPRINT LLCListing unverified	Aug 9, 2018	Award	81,566	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Dec 21, 2017	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Dec 21, 2017	Other	-336,896	6.16 USD	$2.1M		SEC
SPRINT LLCListing unverified	Dec 21, 2017	ExerciseD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 17, 2017	Other	-311,476	6.16 USD	$1.9M		SEC
SPRINT LLCListing unverified	Nov 17, 2017	ExerciseD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 17, 2017	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Aug 7, 2017	Award	58,548	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2016	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2016	ExerciseD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 17, 2016	Other	-315,958	7.74 USD	$2.4M	Unusual size	SEC
SPRINT LLCListing unverified	Aug 11, 2016	Award	80,906	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2015	Other	-300,249	4.18 USD	$1.3M	Unusual size	SEC
SPRINT LLCListing unverified	Nov 17, 2015	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2015	ExerciseD (derivative)	711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Aug 11, 2015	Award	148,368	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Oct 2, 2014	Award	84,746	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
ARM HOLDINGS PLC /UKListing on record	May 19, 2026	AwardD (derivative)	1,531	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
T-Mobile US, Inc.Listing on record	Jun 30, 2020	Buy	350,000	103.00 USD	$36.1M	conv 42First in 12mo	SEC
SPRINT LLCListing unverified	Apr 2, 2020	Other	-2,161,388	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Aug 5, 2019	Award	69,638	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 19, 2018	Award	81,566	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 19, 2018	Other	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 19, 2018	OtherD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 19, 2018	Sell	-327,525	6.20 USD	$2M		SEC
SPRINT LLCListing unverified	Aug 9, 2018	Award	81,566	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Dec 21, 2017	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Dec 21, 2017	Other	-336,896	6.16 USD	$2.1M		SEC
SPRINT LLCListing unverified	Dec 21, 2017	ExerciseD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 17, 2017	Other	-311,476	6.16 USD	$1.9M		SEC
SPRINT LLCListing unverified	Nov 17, 2017	ExerciseD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 17, 2017	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Aug 7, 2017	Award	58,548	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2016	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2016	ExerciseD (derivative)	-711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Nov 17, 2016	Other	-315,958	7.74 USD	$2.4M	Unusual size	SEC
SPRINT LLCListing unverified	Aug 11, 2016	Award	80,906	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2015	Other	-300,249	4.18 USD	$1.3M	Unusual size	SEC
SPRINT LLCListing unverified	Nov 17, 2015	Exercise	711,627	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Nov 17, 2015	ExerciseD (derivative)	711,627	—	n/a (No price was disclosed in the filing)		SEC
SPRINT LLCListing unverified	Aug 11, 2015	Award	148,368	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
SPRINT LLCListing unverified	Oct 2, 2014	Award	84,746	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC