Insider · CIK 0001919492

Arnette Stephen A

Reports to the SEC for 2 companies · CHANTILLY, VA

sec.gov

Transactions

Companies

Filings

CIK

0001919492

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-05-06	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−3,314 sh	$24.89	−$82.5K	106,652
2026-05-06	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−13.6K sh	—	—	13,609
2026-05-06	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+13.6K sh	—	—	109,966
2026-03-02	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+2,808 sh	—	—	97,107
2026-03-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−2,808 sh	—	—	0
2026-03-02	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−750 sh	$30.70	−$23K	96,357
2025-11-17	AMTMAmentum Holdings, Inc.A Award	Chief Operating Officer	AAward	+46.8K sh	—	—	93,725
2025-11-17	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−287 sh	$21.49	−$6,167.63	46,956
2025-11-17	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+1,178 sh	—	—	47,243
2025-11-17	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−1,178 sh	—	—	0
2025-11-16	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−1,120 sh	$22.07	−$24.7K	46,065
2025-11-16	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+4,596 sh	—	—	47,185
2025-11-16	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−4,596 sh	—	—	0
2025-11-16	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−3,681 sh	—	—	0
2025-11-16	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−5,053 sh	—	—	5,053
2025-11-16	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−897 sh	$22.07	−$19.8K	42,589
2025-11-16	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+3,681 sh	—	—	43,486
2025-11-16	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−1,231 sh	$22.07	−$27.2K	39,805
2025-11-16	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+5,053 sh	—	—	41,036
2025-11-15	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−1,403 sh	$22.07	−$31K	35,983
2025-11-15	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+5,758 sh	—	—	37,386
2025-11-15	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−5,758 sh	—	—	11,515
2025-11-06	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−3,093 sh	$21.79	−$67.4K	31,628
2025-11-06	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+12.7K sh	—	—	34,721
2025-11-06	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−12.7K sh	—	—	25,404
2025-03-04	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−152 sh	$18.71	−$2,843.92	22,020
2025-03-04	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+521 sh	—	—	22,172
2025-03-04	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−521 sh	—	—	0
2025-03-03	AMTMAmentum Holdings, Inc.M Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	+1,230 sh	—	—	22,016
2025-03-03	AMTMAmentum Holdings, Inc.F Tax Payment	Chief Operating Officer	FTax Payment	−365 sh	$19.64	−$7,168.6	21,651
2025-03-03	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsM Exercise/Conversion	Chief Operating Officer	MExercise/Conversion	−1,230 sh	—	—	2,808
2024-11-06	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+38.1K sh	—	—	38,105
2024-11-06	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+27.2K sh	—	—	27,218
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+1,178 sh	—	—	1,178
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+521 sh	—	—	521
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+4,038 sh	—	—	4,038
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+10.1K sh	—	—	10,106
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+17.3K sh	—	—	17,273
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+3,681 sh	—	—	3,681
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+4,596 sh	—	—	4,596
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+11K sh	—	—	10,984
2024-10-02	AMTMAmentum Holdings, Inc. · Restricted Stock UnitsA Award	Chief Operating Officer	AAward	+10.4K sh	—	—	10,395
2024-09-18	JJACOBS SOLUTIONS INC.F Tax Payment	EXECUTIVE VICE PRESIDENT	FTax Payment	−2,908 sh	$145.54	−$423K	27,084
2024-09-18	JJACOBS SOLUTIONS INC.M Exercise/Conversion	EXECUTIVE VICE PRESIDENT	MExercise/Conversion	+807 sh	—	—	26,462
2024-09-18	AMTMAmentum Holdings, Inc.J Other	Chief Operating Officer	JOther	+20.8K sh	—	—	20,786
2024-09-18	JJACOBS SOLUTIONS INC.M Exercise/Conversion	EXECUTIVE VICE PRESIDENT	MExercise/Conversion	+1,748 sh	—	—	29,610
2024-09-18	JJACOBS SOLUTIONS INC.M Exercise/Conversion	EXECUTIVE VICE PRESIDENT	MExercise/Conversion	+989 sh	—	—	30,599
2024-09-18	JJACOBS SOLUTIONS INC.M Exercise/Conversion	EXECUTIVE VICE PRESIDENT	MExercise/Conversion	+1,044 sh	—	—	31,643
2024-09-18	JJACOBS SOLUTIONS INC.F Tax Payment	EXECUTIVE VICE PRESIDENT	FTax Payment	−1,651 sh	$145.54	−$240K	29,992
2024-09-18	JJACOBS SOLUTIONS INC. · Performance Stock UnitsM Exercise/Conversion	EXECUTIVE VICE PRESIDENT	MExercise/Conversion	−989 sh	—	—	0

Recent filings

Accepted (ET)
May 74
Arnette Stephen A0002011286-26-000017
SEC(opens sec.gov)
Mar 44
Arnette Stephen A0001628280-26-014626
SEC(opens sec.gov)
Nov 194
Arnette Stephen A0001628280-25-053268
SEC(opens sec.gov)
Nov 184
Arnette Stephen A0001628280-25-052958
SEC(opens sec.gov)

Companies

Address

C/O AMENTUM HOLDINGS, INC. 4800 WESTFIELDS BOULEVARD, SUITE 400

CHANTILLY, VA, 20151