WALKER KATHRYN A

Executive Vice President at T-Mobile US, Inc. · on record since Feb 12, 2004
Director at ADTRAN Holdings, Inc. · on record since Jun 4, 2014
Chief Network Officer at SPRINT LLC · on record since Aug 16, 2005

Insider trading activity of WALKER KATHRYN A

Transactions on record: 180; since Oct 22, 2003

Open-market buys: 0

Open-market sells: 1; $2.6M

Companies traded: 3; last filing Jan 5, 2026

Figures computed from official regulatory filings — .

Companies where WALKER KATHRYN A has traded

ADTRAN Holdings, Inc.85 tx · $3.8K · Jan 5, 2026
SPRINT LLC74 tx · $5.2M · Mar 28, 2008
T-Mobile US, Inc.21 tx · $13.4K · Nov 30, 2004

Track record of WALKER KATHRYN A

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

Transaction history of WALKER KATHRYN A

Co-insiders of WALKER KATHRYN A

ANDERSON RICHARD AADTRAN Holdings, Inc. +1
AUSLEY DUBOSESPRINT LLC +1
BETHUNE GORDON MSPRINT LLC +1
BETTS GENE MSPRINT LLC +1
BLESSING WILLIAM RSPRINT LLC +1
CANO NESTORSPRINT LLC +1
CLAURE RAUL MARCELOSPRINT LLC +1
DELLINGER ROBERT JSPRINT LLC +1
Draper DowSPRINT LLC +1
DRAPER E LINN JRSPRINT LLC +1
FISHER RONALD DSPRINT LLC +1
FORSEE GARY DSPRINT LLC +1
FULLER MICHAEL BSPRINT LLC +1
GERKE THOMAS ASPRINT LLC +1
HENRETTA DEBORAH ASPRINT LLC +1
HOCKADAY IRVINE O JRSPRINT LLC +1
JANZEN HOWARD ESPRINT LLC +1
KAPPES STEPHEN RSPRINT LLC +1

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ADTRAN Holdings, Inc.Listing unverified	Jan 5, 2026	Award	13,809	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2025	Award	14,406	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	Exercise	168.42	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	Award	16,349	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	ExerciseD (derivative)	-168.42	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	Other	-0.42	7.34 USD	$3.1		SEC
ADTRAN Holdings, Inc.Listing unverified	Sep 7, 2023	AwardD (derivative)	69.02	8.37 USD	$577.7	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Jun 8, 2023	AwardD (derivative)	63.21	9.14 USD	$577.7	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Mar 23, 2023	AwardD (derivative)	36.2	15.96 USD	$577.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 25, 2023	Award	1,629	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	Other	-0.47	18.79 USD	$8.8		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	Award	4,790	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	ExerciseD (derivative)	-69.47	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	Exercise	69.47	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Dec 8, 2022	AwardD (derivative)	18.31	19.38 USD	$354.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Sep 6, 2022	Award	15.63	22.70 USD	$354.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Jul 11, 2022	Award	47,478.53	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jul 8, 2022	Other	-47,478.53	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jun 3, 2022	AwardD (derivative)	18.02	19.69 USD	$354.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Mar 7, 2022	AwardD (derivative)	17.51	20.27 USD	$354.9		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	Other	-0.48	22.83 USD	$11		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	ExerciseD (derivative)	-114.48	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	Exercise	114.48	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	Award	3,943	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Dec 2, 2021	AwardD (derivative)	26.91	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
ADTRAN Holdings, Inc.Listing unverified	Jan 5, 2026	Award	13,809	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2025	Award	14,406	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	Exercise	168.42	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	Award	16,349	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	ExerciseD (derivative)	-168.42	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 3, 2024	Other	-0.42	7.34 USD	$3.1		SEC
ADTRAN Holdings, Inc.Listing unverified	Sep 7, 2023	AwardD (derivative)	69.02	8.37 USD	$577.7	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Jun 8, 2023	AwardD (derivative)	63.21	9.14 USD	$577.7	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Mar 23, 2023	AwardD (derivative)	36.2	15.96 USD	$577.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 25, 2023	Award	1,629	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	Other	-0.47	18.79 USD	$8.8		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	Award	4,790	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	ExerciseD (derivative)	-69.47	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2023	Exercise	69.47	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Dec 8, 2022	AwardD (derivative)	18.31	19.38 USD	$354.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Sep 6, 2022	Award	15.63	22.70 USD	$354.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Jul 11, 2022	Award	47,478.53	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jul 8, 2022	Other	-47,478.53	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jun 3, 2022	AwardD (derivative)	18.02	19.69 USD	$354.8	Unusual size	SEC
ADTRAN Holdings, Inc.Listing unverified	Mar 7, 2022	AwardD (derivative)	17.51	20.27 USD	$354.9		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	Other	-0.48	22.83 USD	$11		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	ExerciseD (derivative)	-114.48	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	Exercise	114.48	—	n/a (No price was disclosed in the filing)		SEC
ADTRAN Holdings, Inc.Listing unverified	Jan 4, 2022	Award	3,943	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ADTRAN Holdings, Inc.Listing unverified	Dec 2, 2021	AwardD (derivative)	26.91	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC