Insider · CIK 0001134710

GRINDSTAFF NICHOLAS M

Reports to the SEC for 3 companies · THE WOODLANDS, TX

sec.gov

Transactions

Companies

Filings

CIK

0001134710

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-07-10	STRLSTERLING INFRASTRUCTURE, INC.F Tax Payment	Chief Financial Officer (CFO)	FTax Payment	−556 sh	$682.29	−$379K	6,037
2026-01-01	STRLSTERLING INFRASTRUCTURE, INC.A Award	Chief Financial Officer (CFO)	AAward	+1,029 sh	—	—	6,593
2025-12-31	STRLSTERLING INFRASTRUCTURE, INC.F Tax Payment	Chief Financial Officer (CFO)	FTax Payment	−61 sh	$306.23	−$18.7K	5,564
2025-07-10	STRLSTERLING INFRASTRUCTURE, INC.A Award	Chief Financial Officer (CFO)	AAward	+560 sh	—	—	5,560
2025-07-10	STRLSTERLING INFRASTRUCTURE, INC.A Award	Chief Financial Officer (CFO)	AAward	+5,000 sh	—	—	5,000
2022-09-15	Orbital Infrastructure Group, Inc.A Award	Chief Financial Officer	AAward	+154K sh	—	—	296,052
2022-09-15	Orbital Infrastructure Group, Inc.Restricted Stock UnitsA Award	Chief Financial Officer	AAward	+500K sh	—	—	500,000
2021-05-10	PWRQUANTA SERVICES, INC.S Sale	VP - Finance and Treasurer	SSale	−8,454 sh	$101.22	−$856K	31,868
2021-03-26	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−491 sh	$83.48	−$41K	40,322
2021-03-25	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+1,400 sh	—	—	40,813
2021-03-03	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−2,126 sh	$84.21	−$179K	39,413
2021-03-03	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+5,772 sh	—	—	41,539
2021-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−399 sh	$83.85	−$33.5K	35,767
2021-01-01	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−2,624 sh	$72.02	−$189K	36,166
2020-11-02	PWRQUANTA SERVICES, INC.S Sale	VP - Finance and Treasurer	SSale	−8,256 sh	$64.53	−$533K	38,790
2020-03-26	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+3,744 sh	—	—	47,046
2020-03-04	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−1,753 sh	$38.56	−$67.6K	43,302
2020-03-04	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+5,446 sh	—	—	45,055
2020-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−470 sh	$39.42	−$18.5K	39,609
2020-01-01	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−1,773 sh	$40.71	−$72.2K	40,079
2019-03-08	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+2,862 sh	—	—	41,852
2019-02-28	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+6,964 sh	—	—	39,348
2019-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−358 sh	$35.97	−$12.9K	38,990
2018-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−259 sh	$35.04	−$9,075.36	32,384
2018-02-28	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+2,886 sh	—	—	32,643
2018-02-28	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+3,484 sh	—	—	29,757
2017-03-22	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+2,723 sh	—	—	26,273
2017-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−36 sh	$38.13	−$1,372.68	23,550
2017-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−27 sh	$38.13	−$1,029.51	23,632
2017-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−18 sh	$38.13	−$686.34	23,614
2017-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−28 sh	$38.13	−$1,067.64	23,586
2017-02-27	PWRQUANTA SERVICES, INC.S Sale	VP - Finance and Treasurer	SSale	−27K sh	$38.20	−$1.03M	23,659
2017-02-20	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+2,185 sh	—	—	51,373
2017-02-20	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−714 sh	$37.24	−$26.6K	50,659
2016-03-30	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+4,519 sh	—	—	49,188
2016-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−364 sh	$20.21	−$7,356.44	44,723
2016-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−26 sh	$20.21	−$525.46	44,697
2016-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−11 sh	$20.21	−$222.31	44,686
2016-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−17 sh	$20.21	−$343.57	44,669
2016-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−765 sh	$20.21	−$15.5K	45,087
2015-03-16	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+3,484 sh	—	—	45,852
2015-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−501 sh	$28.78	−$14.4K	43,417
2015-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−39 sh	$28.78	−$1,122.42	42,386
2015-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−18 sh	$28.78	−$518.04	42,368
2015-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−309 sh	$28.78	−$8,893.02	42,425
2015-02-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−683 sh	$28.78	−$19.7K	42,734
2014-03-28	PWRQUANTA SERVICES, INC.F Tax Payment	VP - Finance and Treasurer	FTax Payment	−319 sh	$36.10	−$11.5K	43,918
2014-03-12	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+2,185 sh	—	—	40,742
2014-03-12	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+5,325 sh	—	—	38,557
2014-03-12	PWRQUANTA SERVICES, INC.A Award	VP - Finance and Treasurer	AAward	+3,495 sh	—	—	44,237

Recent filings

Accepted (ET)
Jul 144
GRINDSTAFF NICHOLAS M0000874238-26-000097
SEC(opens sec.gov)
Jan 54
GRINDSTAFF NICHOLAS M0000874238-26-000008
SEC(opens sec.gov)
Jul 104
GRINDSTAFF NICHOLAS M0000874238-25-000108
SEC(opens sec.gov)
Oct 174
GRINDSTAFF NICHOLAS M0001437749-22-024260
SEC(opens sec.gov)
May 124
GRINDSTAFF NICHOLAS M0001050915-21-000074
SEC(opens sec.gov)
Mar 294
GRINDSTAFF NICHOLAS M0001050915-21-000063
SEC(opens sec.gov)
Mar 54
GRINDSTAFF NICHOLAS M0001050915-21-000040
SEC(opens sec.gov)
Mar 24
GRINDSTAFF NICHOLAS M0001050915-21-000021
SEC(opens sec.gov)
Jan 54
GRINDSTAFF NICHOLAS M0001050915-21-000005
SEC(opens sec.gov)
Nov 44
GRINDSTAFF NICHOLAS M0001050915-20-000119
SEC(opens sec.gov)
Mar 304
GRINDSTAFF NICHOLAS M0001050915-20-000063
SEC(opens sec.gov)
Mar 64
GRINDSTAFF NICHOLAS M0001050915-20-000052
SEC(opens sec.gov)
Mar 34
GRINDSTAFF NICHOLAS M0001050915-20-000036
SEC(opens sec.gov)
Jan 34
GRINDSTAFF NICHOLAS M0001050915-20-000006
SEC(opens sec.gov)

Companies

Address

1800 HUGHES LANDING BLVD. SUITE 250

THE WOODLANDS, TX, 77380