Nicholas M Grindstaff

Insider

First SEC filing: Jan. 5, 2026 · Latest: Jan. 5, 2026

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 84 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

84 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 10, 2026	STRL	F	556	$682.29	$379,353	6,037 Direct	-8.43%	Disposed	-23.5% (price as of 2026-08-20)
Jan. 1, 2026	STRL	A	1,029	—	—	6,593 Direct	+18.49%	Acquired	(price as of 2026-08-20)
Dec. 31, 2025	STRL	F	61	$306.23	$18,680	5,564 Direct	-1.08%	Disposed	70.3% (price as of 2026-08-20)
July 10, 2025	STRL	A	560	—	—	5,560 Direct	+11.20%	Acquired	(price as of 2026-08-20)
July 10, 2025	STRL	A	5,000	—	—	5,000 Direct	—	Acquired	(price as of 2026-08-20)
May 10, 2021	PWR	S	8,454	$101.22	$855,714	31,868 Direct	-20.97%	Disposed	562.8% (price as of 2026-08-20)
March 26, 2021	PWR	F	491	$83.48	$40,989	40,322 Direct	-1.20%	Disposed	703.6% (price as of 2026-08-20)
March 25, 2021	PWR	A	1,400	—	—	40,813 Direct	+3.55%	Acquired	(price as of 2026-08-20)
March 3, 2021	PWR	F	2,126	$84.21	$179,030	39,413 Direct	-5.12%	Disposed	696.7% (price as of 2026-08-20)
March 3, 2021	PWR	A	5,772	—	—	41,539 Direct	+16.14%	Acquired	(price as of 2026-08-20)
Feb. 28, 2021	PWR	F	399	$83.85	$33,456	35,767 Direct	-1.10%	Disposed	700.1% (price as of 2026-08-20)
Jan. 1, 2021	PWR	F	2,624	$72.02	$188,980	36,166 Direct	-6.76%	Disposed	831.5% (price as of 2026-08-20)
Nov. 2, 2020	PWR	S	8,256	$64.53	$532,760	38,790 Direct	-17.55%	Disposed	939.6% (price as of 2026-08-20)
March 26, 2020	PWR	A	3,744	—	—	47,046 Direct	+8.65%	Acquired	(price as of 2026-08-20)
March 4, 2020	PWR	F	1,753	$38.56	$67,596	43,302 Direct	-3.89%	Disposed	1639.8% (price as of 2026-08-20)
March 4, 2020	PWR	A	5,446	—	—	45,055 Direct	+13.75%	Acquired	(price as of 2026-08-20)
Feb. 28, 2020	PWR	F	470	$39.42	$18,527	39,609 Direct	-1.17%	Disposed	1601.9% (price as of 2026-08-20)
Jan. 1, 2020	PWR	F	1,773	$40.71	$72,179	40,079 Direct	-4.24%	Disposed	1547.9% (price as of 2026-08-20)
March 8, 2019	PWR	A	2,862	—	—	41,852 Direct	+7.34%	Acquired	(price as of 2026-08-20)
Feb. 28, 2019	PWR	F	358	$35.97	$12,877	38,990 Direct	-0.91%	Disposed	1765.1% (price as of 2026-08-20)
Feb. 28, 2019	PWR	A	6,964	—	—	39,348 Direct	+21.50%	Acquired	(price as of 2026-08-20)
Feb. 28, 2018	PWR	F	259	$35.04	$9,075	32,384 Direct	-0.79%	Disposed	1814.6% (price as of 2026-08-20)
Feb. 28, 2018	PWR	A	2,886	—	—	32,643 Direct	+9.70%	Acquired	(price as of 2026-08-20)
Feb. 28, 2018	PWR	A	3,484	—	—	29,757 Direct	+13.26%	Acquired	(price as of 2026-08-20)
March 22, 2017	PWR	A	2,723	—	—	26,273 Direct	+11.56%	Acquired	(price as of 2026-08-20)
Feb. 28, 2017	PWR	F	36	$38.13	$1,373	23,550 Direct	-0.15%	Disposed	1659.4% (price as of 2026-08-20)
Feb. 28, 2017	PWR	F	28	$38.13	$1,068	23,586 Direct	-0.12%	Disposed	1659.4% (price as of 2026-08-20)
Feb. 28, 2017	PWR	F	18	$38.13	$686	23,614 Direct	-0.08%	Disposed	1659.4% (price as of 2026-08-20)
Feb. 28, 2017	PWR	F	27	$38.13	$1,030	23,632 Direct	-0.11%	Disposed	1659.4% (price as of 2026-08-20)
Feb. 27, 2017	PWR	S	27,000	$38.20	$1,031,400	23,659 Direct	-53.30%	Disposed	1656.2% (price as of 2026-08-20)
Feb. 20, 2017	PWR	F	714	$37.24	$26,589	50,659 Direct	-1.39%	Disposed	1701.5% (price as of 2026-08-20)
Feb. 20, 2017	PWR	A	2,185	—	—	51,373 Direct	+4.44%	Acquired	(price as of 2026-08-20)
March 30, 2016	PWR	A	4,519	—	—	49,188 Direct	+10.12%	Acquired	(price as of 2026-08-20)
Feb. 28, 2016	PWR	F	17	$20.21	$344	44,669 Direct	-0.04%	Disposed	3219.5% (price as of 2026-08-20)
Feb. 28, 2016	PWR	F	11	$20.21	$222	44,686 Direct	-0.02%	Disposed	3219.5% (price as of 2026-08-20)
Feb. 28, 2016	PWR	F	26	$20.21	$525	44,697 Direct	-0.06%	Disposed	3219.5% (price as of 2026-08-20)
Feb. 28, 2016	PWR	F	364	$20.21	$7,356	44,723 Direct	-0.81%	Disposed	3219.5% (price as of 2026-08-20)
Feb. 28, 2016	PWR	F	765	$20.21	$15,461	45,087 Direct	-1.67%	Disposed	3219.5% (price as of 2026-08-20)
March 16, 2015	PWR	A	3,484	—	—	45,852 Direct	+8.22%	Acquired	(price as of 2026-08-20)
Feb. 28, 2015	PWR	F	18	$28.78	$518	42,368 Direct	-0.04%	Disposed	2231.0% (price as of 2026-08-20)
Feb. 28, 2015	PWR	F	39	$28.78	$1,122	42,386 Direct	-0.09%	Disposed	2231.0% (price as of 2026-08-20)
Feb. 28, 2015	PWR	F	309	$28.78	$8,893	42,425 Direct	-0.72%	Disposed	2231.0% (price as of 2026-08-20)
Feb. 28, 2015	PWR	F	683	$28.78	$19,657	42,734 Direct	-1.57%	Disposed	2231.0% (price as of 2026-08-20)
Feb. 28, 2015	PWR	F	501	$28.78	$14,419	43,417 Direct	-1.14%	Disposed	2231.0% (price as of 2026-08-20)
March 28, 2014	PWR	F	319	$36.10	$11,516	43,918 Direct	-0.72%	Disposed	1758.4% (price as of 2026-08-20)
March 12, 2014	PWR	A	3,495	—	—	44,237 Direct	+8.58%	Acquired	(price as of 2026-08-20)
March 12, 2014	PWR	A	2,185	—	—	40,742 Direct	+5.67%	Acquired	(price as of 2026-08-20)
March 12, 2014	PWR	A	5,325	—	—	38,557 Direct	+16.02%	Acquired	(price as of 2026-08-20)
Feb. 28, 2014	PWR	F	624	$35.01	$21,846	33,232 Direct	-1.84%	Disposed	1816.2% (price as of 2026-08-20)
Feb. 28, 2014	PWR	F	469	$35.01	$16,420	33,856 Direct	-1.37%	Disposed	1816.2% (price as of 2026-08-20)
Feb. 28, 2014	PWR	F	368	$35.01	$12,884	34,325 Direct	-1.06%	Disposed	1816.2% (price as of 2026-08-20)
March 8, 2013	PWR	A	7,027	—	—	34,693 Direct	+25.40%	Acquired	(price as of 2026-08-20)
Feb. 28, 2013	PWR	F	364	$28.04	$10,207	28,460 Direct	-1.26%	Disposed	2292.6% (price as of 2026-08-20)
Feb. 28, 2013	PWR	F	367	$28.04	$10,291	28,093 Direct	-1.29%	Disposed	2292.6% (price as of 2026-08-20)
Feb. 28, 2013	PWR	F	427	$28.04	$11,973	27,666 Direct	-1.52%	Disposed	2292.6% (price as of 2026-08-20)
Dec. 24, 2012	PWR	S	2,800	$27.13	$75,964	28,824 Direct	-8.85%	Disposed	2372.8% (price as of 2026-08-20)
Dec. 24, 2012	PWR	S	3,700	$27.13	$100,381	31,624 Direct	-10.47%	Disposed	2372.8% (price as of 2026-08-20)
Dec. 24, 2012	PWR	S	250	$27.12	$6,780	35,324 Direct	-0.70%	Disposed	2373.7% (price as of 2026-08-20)
Dec. 24, 2012	PWR	S	1,250	$27.12	$33,900	35,574 Direct	-3.39%	Disposed	2373.7% (price as of 2026-08-20)
March 9, 2012	PWR	A	4,602	—	—	36,824 Direct	+14.28%	Acquired	(price as of 2026-08-20)
Feb. 28, 2012	PWR	F	332	$21.34	$7,085	32,222 Direct	-1.02%	Disposed	3043.7% (price as of 2026-08-20)
Feb. 28, 2012	PWR	F	342	$21.34	$7,298	32,554 Direct	-1.04%	Disposed	3043.7% (price as of 2026-08-20)
Feb. 28, 2012	PWR	F	406	$21.34	$8,664	32,896 Direct	-1.22%	Disposed	3043.7% (price as of 2026-08-20)
March 11, 2011	PWR	A	3,373	—	—	33,302 Direct	+11.27%	Acquired	(price as of 2026-08-20)
Feb. 28, 2011	PWR	F	342	$22.28	$7,620	29,929 Direct	-1.13%	Disposed	2911.1% (price as of 2026-08-20)
Feb. 28, 2011	PWR	F	389	$22.28	$8,667	30,271 Direct	-1.27%	Disposed	2911.1% (price as of 2026-08-20)
Feb. 28, 2011	PWR	F	350	$22.28	$7,798	30,660 Direct	-1.13%	Disposed	2911.1% (price as of 2026-08-20)
March 12, 2010	PWR	A	3,342	—	—	31,010 Direct	+12.08%	Acquired	(price as of 2026-08-20)
Feb. 28, 2010	PWR	F	432	$19.00	$8,208	27,668 Direct	-1.54%	Disposed	3430.9% (price as of 2026-08-20)
Feb. 28, 2010	PWR	F	373	$19.00	$7,087	28,100 Direct	-1.31%	Disposed	3430.9% (price as of 2026-08-20)
Feb. 28, 2010	PWR	F	429	$19.00	$8,151	28,473 Direct	-1.48%	Disposed	3430.9% (price as of 2026-08-20)
March 13, 2009	PWR	A	3,965	—	—	28,902 Direct	+15.90%	Acquired	(price as of 2026-08-20)
Feb. 28, 2009	PWR	F	373	$17.60	$6,565	24,937 Direct	-1.47%	Disposed	3711.8% (price as of 2026-08-20)
Feb. 28, 2009	PWR	F	385	$17.60	$6,776	25,310 Direct	-1.50%	Disposed	3711.8% (price as of 2026-08-20)
Feb. 28, 2009	PWR	F	823	$17.60	$14,485	25,695 Direct	-3.10%	Disposed	3711.8% (price as of 2026-08-20)
March 13, 2008	PWR	A	3,423	—	—	26,518 Direct	+14.82%	Acquired	(price as of 2026-08-20)
Feb. 28, 2008	PWR	F	347	$25.23	$8,755	23,095 Direct	-1.48%	Disposed	2559.0% (price as of 2026-08-20)
Feb. 28, 2008	PWR	F	673	$25.23	$16,980	23,442 Direct	-2.79%	Disposed	2559.0% (price as of 2026-08-20)
Feb. 28, 2008	PWR	F	890	$25.23	$22,455	24,115 Direct	-3.56%	Disposed	2559.0% (price as of 2026-08-20)
May 10, 2007	PWR	S	900	$28.90	$26,010	25,005 Direct	-3.47%	Disposed	2221.4% (price as of 2026-08-20)
May 10, 2007	PWR	S	1,300	$28.89	$37,557	25,905 Direct	-4.78%	Disposed	2222.2% (price as of 2026-08-20)
May 10, 2007	PWR	S	5,878	$28.85	$169,580	27,205 Direct	-17.77%	Disposed	2225.4% (price as of 2026-08-20)
May 10, 2007	PWR	S	1,300	$28.84	$37,492	33,083 Direct	-3.78%	Disposed	2226.2% (price as of 2026-08-20)
May 10, 2007	PWR	S	100	$28.83	$2,883	34,383 Direct	-0.29%	Disposed	2227.0% (price as of 2026-08-20)
May 10, 2007	PWR	S	522	$28.82	$15,044	34,483 Direct	-1.49%	Disposed	2227.8% (price as of 2026-08-20)
March 22, 2007	PWR	A	3,934	—	—	35,005 Direct	+12.66%	Acquired	(price as of 2026-08-20)
Feb. 28, 2007	PWR	F	666	$22.68	$15,105	31,071 Direct	-2.10%	Disposed	2858.0% (price as of 2026-08-20)
Feb. 28, 2007	PWR	F	740	$22.68	$16,783	31,737 Direct	-2.28%	Disposed	2858.0% (price as of 2026-08-20)
Feb. 28, 2007	PWR	F	881	$22.68	$19,981	32,477 Direct	-2.64%	Disposed	2858.0% (price as of 2026-08-20)
Aug. 22, 2006	PWR	S	1,668	$17.38	$28,990	33,358 Direct	-4.76%	Disposed	3760.0% (price as of 2026-08-20)
Aug. 22, 2006	PWR	S	400	$17.36	$6,944	35,026 Direct	-1.13%	Disposed	3764.5% (price as of 2026-08-20)
Aug. 22, 2006	PWR	S	200	$17.35	$3,470	35,426 Direct	-0.56%	Disposed	3766.7% (price as of 2026-08-20)
March 10, 2006	PWR	A	7,553	—	—	35,626 Direct	+26.90%	Acquired	(price as of 2026-08-20)
Feb. 28, 2006	PWR	F	721	$13.81	$9,957	28,073 Direct	-2.50%	Disposed	4757.9% (price as of 2026-08-20)
Feb. 28, 2006	PWR	F	713	$13.81	$9,847	28,794 Direct	-2.42%	Disposed	4757.9% (price as of 2026-08-20)
Feb. 28, 2006	PWR	F	1,902	$13.81	$26,267	29,507 Direct	-6.06%	Disposed	4757.9% (price as of 2026-08-20)
March 15, 2005	PWR	A	8,174	—	—	31,409 Direct	+35.18%	Acquired	(price as of 2026-08-20)
March 1, 2005	PWR	F	2,123	$8.00	$16,984	23,235 Direct	-8.37%	Disposed	8285.9% (price as of 2026-08-20)
March 1, 2005	PWR	F	909	$8.00	$7,272	25,358 Direct	-3.46%	Disposed	8285.9% (price as of 2026-08-20)
March 17, 2004	PWR	A	8,086	—	—	26,267 Direct	+44.48%	Acquired	(price as of 2026-08-20)

Showing latest 100 of 101 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

STRL

CFO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2025	$287,671	—	$330,822	—	$431,507	—	$5,769	$1,055,769

PWR

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2013	$263,294	—	—	—	$244,007	—	$8,179	$722,706
2012	$255,625	—	—	—	$249,775	—	$16,842	$621,921

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.