David R Warren

Insider

First SEC filing: Aug. 18, 2017 · Latest: March 5, 2024

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

AOS selling May 11, 2021

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 44 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

44 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 12, 2024	AOS	A	5,000	—	—	13,635 Direct	+57.90%	Acquired	(price as of 2026-08-20)
Feb. 12, 2024	AOS	A	4,875	—	—	13,510 Direct	+56.46%	Acquired	(price as of 2026-08-20)
Feb. 8, 2024	AOS	M	3,635	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 8, 2024	AOS	F	1,511	$80.28	$121,303	13,228 Direct	-10.25%	Disposed	-20.9% (price as of 2026-08-20)
Feb. 8, 2024	AOS	M	3,635	—	—	14,739 Direct	+32.74%	Acquired	(price as of 2026-08-20)
Feb. 13, 2023	AOS	A	5,510	—	—	12,270 Direct	+81.51%	Acquired	(price as of 2026-08-20)
Feb. 10, 2023	AOS	M	4,670	—	—	6,760 Direct	-40.86%	Disposed	(price as of 2026-08-20)
Feb. 10, 2023	AOS	F	1,928	$65.80	$126,862	11,104 Direct	-14.79%	Disposed	-3.4% (price as of 2026-08-20)
Feb. 10, 2023	AOS	M	4,670	—	—	13,032 Direct	+55.85%	Acquired	(price as of 2026-08-20)
Feb. 11, 2022	AOS	M	3,740	$71.72	$268,233	9,834 Direct	+61.37%	Acquired	-11.4% (price as of 2026-08-20)
Feb. 11, 2022	AOS	M	3,740	—	—	11,430 Direct	-24.65%	Disposed	(price as of 2026-08-20)
Feb. 11, 2022	AOS	F	1,472	$71.72	$105,572	8,362 Direct	-14.97%	Disposed	-11.4% (price as of 2026-08-20)
Feb. 7, 2022	AOS	A	3,125	—	—	15,170 Direct	+25.94%	Acquired	(price as of 2026-08-20)
Feb. 7, 2022	AOS	A	13,190	—	—	62,604 Direct	+26.69%	Acquired	(price as of 2026-08-20)
May 11, 2021	AOS	M	1,714	$23.24	$39,833	7,808 Direct	+28.13%	Acquired	173.4% (price as of 2026-08-20)
May 11, 2021	AOS	M	3,492	$30.76	$107,414	11,300 Direct	+44.72%	Acquired	106.6% (price as of 2026-08-20)
May 11, 2021	AOS	M	5,710	$31.67	$180,836	17,010 Direct	+50.53%	Acquired	100.6% (price as of 2026-08-20)
May 11, 2021	AOS	M	11,377	$49.42	$562,251	28,387 Direct	+66.88%	Acquired	28.6% (price as of 2026-08-20)
May 11, 2021	AOS	M	8,099	$42.39	$343,317	36,486 Direct	+28.53%	Acquired	49.9% (price as of 2026-08-20)
May 11, 2021	AOS	S	30,392	$70.79	$2,151,450	6,094 Direct	-83.30%	Disposed	-10.2% (price as of 2026-08-20)
May 11, 2021	AOS	M	1,714	—	—	78,092 Direct	-2.15%	Disposed	(price as of 2026-08-20)
May 11, 2021	AOS	M	3,492	—	—	74,600 Direct	-4.47%	Disposed	(price as of 2026-08-20)
May 11, 2021	AOS	M	5,710	—	—	68,890 Direct	-7.65%	Disposed	(price as of 2026-08-20)
May 11, 2021	AOS	M	11,377	—	—	57,513 Direct	-16.51%	Disposed	(price as of 2026-08-20)
May 11, 2021	AOS	M	8,099	—	—	49,414 Direct	-14.08%	Disposed	(price as of 2026-08-20)
Feb. 12, 2021	AOS	M	1,925	—	—	12,045 Direct	-13.78%	Disposed	(price as of 2026-08-20)
Feb. 12, 2021	AOS	F	758	$60.65	$45,973	6,094 Direct	-11.06%	Disposed	4.8% (price as of 2026-08-20)
Feb. 12, 2021	AOS	A	1,925	$60.65	$116,751	6,852 Direct	+39.07%	Acquired	4.8% (price as of 2026-08-20)
Feb. 8, 2021	AOS	A	3,635	—	—	13,970 Direct	+35.17%	Acquired	(price as of 2026-08-20)
Feb. 8, 2021	AOS	A	15,780	—	—	79,806 Direct	+24.65%	Acquired	(price as of 2026-08-20)
Feb. 13, 2020	AOS	M	975	—	—	10,335 Direct	-8.62%	Disposed	(price as of 2026-08-20)
Feb. 13, 2020	AOS	F	384	$43.96	$16,881	4,927 Direct	-7.23%	Disposed	44.5% (price as of 2026-08-20)
Feb. 13, 2020	AOS	A	975	$43.96	$42,861	5,311 Direct	+22.49%	Acquired	44.5% (price as of 2026-08-20)
Feb. 10, 2020	AOS	A	4,670	—	—	11,310 Direct	+70.33%	Acquired	(price as of 2026-08-20)
Feb. 10, 2020	AOS	A	24,295	—	—	64,026 Direct	+61.15%	Acquired	(price as of 2026-08-20)
Feb. 11, 2019	AOS	A	17,065	—	—	39,731 Direct	+75.29%	Acquired	(price as of 2026-08-20)
Feb. 11, 2019	AOS	A	3,740	—	—	6,640 Direct	+128.97%	Acquired	(price as of 2026-08-20)
Feb. 8, 2019	AOS	M	1,420	—	—	2,900 Direct	-32.87%	Disposed	(price as of 2026-08-20)
Feb. 8, 2019	AOS	F	635	$48.72	$30,937	4,328 Direct	-12.79%	Disposed	30.4% (price as of 2026-08-20)
Feb. 8, 2019	AOS	A	1,420	$48.72	$69,182	4,963 Direct	+40.08%	Acquired	30.4% (price as of 2026-08-20)
Feb. 12, 2018	AOS	A	7,995	—	—	22,666 Direct	+54.50%	Acquired	(price as of 2026-08-20)
Feb. 12, 2018	AOS	A	1,925	—	—	4,320 Direct	+80.38%	Acquired	(price as of 2026-08-20)
Feb. 9, 2018	AOS	M	1,460	—	—	2,395 Direct	-37.87%	Disposed	(price as of 2026-08-20)
Feb. 9, 2018	AOS	F	652	$60.11	$39,192	3,541 Direct	-15.55%	Disposed	5.7% (price as of 2026-08-20)
Feb. 9, 2018	AOS	M	1,460	$60.11	$87,761	4,193 Direct	+53.42%	Acquired	5.7% (price as of 2026-08-20)

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.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Feb. 12, 2024	AOS	Restricted Stock Units	Common Stock (5,000)	—	—	5,000	Acquired
Feb. 12, 2024	AOS	Restricted Stock Units	Common Stock (4,875)	—	—	4,875	Acquired
Feb. 8, 2024	AOS	Restricted Stock Units	Common Stock (3,635)	—	—	3,635	Disposed
Feb. 13, 2023	AOS	Restricted Stock Units	Common Stock (5,510)	—	—	5,510	Acquired
Feb. 10, 2023	AOS	Restricted Stock Units	Common Stock (4,670)	—	—	4,670	Disposed
Feb. 11, 2022	AOS	Restricted Stock Units	Common Stock (3,740)	$71.72	—	3,740	Disposed
Feb. 7, 2022	AOS	Restricted Stock Units	Common Stock (3,125)	$74.26	—	3,125	Acquired
Feb. 7, 2022	AOS	Employee Stock Options (Right to Buy)	Common Stock (13,190)	$74.26	Feb. 7, 2032	13,190	Acquired
May 11, 2021	AOS	Employee Stock Options (Right to Buy)	Common Stock (1,714)	$23.24	Feb. 10, 2024	1,714	Disposed
May 11, 2021	AOS	Employee Stock Options (Right to Buy)	Common Stock (3,492)	$30.76	Feb. 9, 2025	3,492	Disposed
May 11, 2021	AOS	Employee Stock Options (Right to Buy)	Common Stock (5,710)	$31.67	Feb. 8, 2026	5,710	Disposed
May 11, 2021	AOS	Employee Stock Options (Right to Buy)	Common Stock (11,377)	$49.42	Feb. 11, 2029	11,377	Disposed
May 11, 2021	AOS	Employee Stock Options (Right to Buy)	Common Stock (8,099)	$42.39	Feb. 10, 2030	8,099	Disposed
Feb. 12, 2021	AOS	Restricted Stock Units	Common Stock (1,925)	$60.65	—	1,925	Disposed
Feb. 8, 2021	AOS	Restricted Stock Units	Common Stock (3,635)	$60.82	—	3,635	Acquired
Feb. 8, 2021	AOS	Employee Stock Options (Right to Buy)	Common Stock (15,780)	$60.82	Feb. 8, 2031	15,780	Acquired
Feb. 13, 2020	AOS	Restricted Stock Units	Common Stock (975)	$43.96	—	975	Disposed
Feb. 10, 2020	AOS	Restricted Stock Units	Common Stock (4,670)	$42.39	—	4,670	Acquired
Feb. 10, 2020	AOS	Employee Stock Options (Right to Buy)	Common Stock (24,295)	$42.39	Feb. 10, 2030	24,295	Acquired
Feb. 11, 2019	AOS	Employee Stock Options (Right to Buy)	Common Stock (17,065)	$49.42	Feb. 11, 2029	17,065	Acquired
Feb. 11, 2019	AOS	Restricted Stock Units	Common Stock (3,740)	$49.42	—	3,740	Acquired
Feb. 8, 2019	AOS	Restricted Stock Units	Common Stock (1,420)	$48.72	—	1,420	Disposed
Feb. 12, 2018	AOS	Employee Stock Options (Right to Buy)	Common Stock (7,995)	$61.76	Feb. 12, 2028	7,995	Acquired
Feb. 12, 2018	AOS	Restricted Stock Units	Common Stock (1,925)	$61.76	—	1,925	Acquired
Feb. 9, 2018	AOS	Restricted Stock Units	Common Stock (1,460)	$60.11	—	1,460	Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 4 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Aug. 18, 2017	AOS	Common Stock	2,730	Direct
July 17, 2017	AOS	Common Stock	1,235	Direct
July 17, 2017	AOS	Restricted Stock Units→ Common Stock (3,855)	3,855	Direct
July 17, 2017	AOS	Employee Stock Options (Right to Buy)→ Common Stock (14,671)	14,671	Direct