William P Ainsworth

Insider

First SEC filing: March 11, 2021 · Latest: May 26, 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.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 23 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

23 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 21, 2026	TRN	A	4,024	—	—	31,985 Direct	+14.39%	Acquired	(price as of 2026-08-20)
May 15, 2025	TRN	A	5,121	—	—	27,961 Direct	+22.42%	Acquired	(price as of 2026-08-20)
May 20, 2024	TRN	A	4,488	—	—	22,840 Direct	+24.46%	Acquired	(price as of 2026-08-20)
May 8, 2023	TRN	A	6,473	—	—	18,352 Direct	+54.49%	Acquired	(price as of 2026-08-20)
May 9, 2022	TRN	A	5,073	—	—	11,879 Direct	+74.54%	Acquired	(price as of 2026-08-20)
May 3, 2021	TRN	A	4,576	—	—	6,806 Direct	+205.20%	Acquired	(price as of 2026-08-20)
March 10, 2021	TRN	A	2,230	—	—	2,230 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 21, 2021	CAT	G	500	—	—	63,501 Direct	-0.78%	Disposed	(price as of 2026-08-20)
Dec. 16, 2020	CAT	G	500	—	—	64,001 Direct	-0.78%	Disposed	(price as of 2026-08-20)
Oct. 30, 2020	CAT	S	12,000	$154.78	$1,857,360	64,501 Direct	-15.69%	Disposed	422.4% (price as of 2026-08-20)
Aug. 11, 2020	CAT	G	5,588	—	—	76,501 Direct	-6.81%	Disposed	(price as of 2026-08-20)
Aug. 5, 2020	CAT	M	69,486	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 5, 2020	CAT	M	30,964	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 5, 2020	CAT	M	15,199	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 5, 2020	CAT	F	93,434	$135.00	$12,613,590	82,089 Direct	-53.23%	Disposed	498.9% (price as of 2026-08-20)
Aug. 5, 2020	CAT	M	69,486	$95.66	$6,647,031	175,523 Direct	+65.53%	Acquired	745.2% (price as of 2026-08-20)
Aug. 5, 2020	CAT	M	30,964	$74.77	$2,315,178	106,037 Direct	+41.25%	Acquired	981.4% (price as of 2026-08-20)
Aug. 5, 2020	CAT	M	15,199	$83.00	$1,261,517	75,073 Direct	+25.38%	Acquired	874.1% (price as of 2026-08-20)
May 1, 2020	CAT	F	53	$112.58	$5,967	59,874 Direct	-0.09%	Disposed	618.2% (price as of 2026-08-20)
March 2, 2020	CAT	A	80,833	—	—	80,833 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 11, 2020	CAT	F	4,372	$136.15	$595,248	59,927 Direct	-6.80%	Disposed	493.9% (price as of 2026-08-20)
Feb. 11, 2020	CAT	A	12,283	—	—	64,299 Direct	+23.61%	Acquired	(price as of 2026-08-20)
May 1, 2019	CAT	F	34	$138.79	$4,719	51,766 Direct	-0.07%	Disposed	482.6% (price as of 2026-08-20)
March 4, 2019	CAT	A	54,038	—	—	54,038 Direct	—	Acquired	(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
Aug. 5, 2020	CAT	Employee Stock Options	Common Stock (69,486)	$95.66	March 6, 2027	69,486	Disposed
Aug. 5, 2020	CAT	Employee Stock Options	Common Stock (30,964)	$74.77	March 7, 2026	30,964	Disposed
Aug. 5, 2020	CAT	Employee Stock Options	Common Stock (15,199)	$83.00	March 2, 2025	15,199	Disposed
March 2, 2020	CAT	Employee Stock Options	Common Stock (80,833)	$127.60	March 2, 2030	80,833	Acquired
March 4, 2019	CAT	Employee Stock Options	Common Stock (54,038)	$138.35	March 4, 2029	54,038	Acquired

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

Initial ownership (Form 3) 7 holdings

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

Date	Ticker	Security	Shares	Ownership
March 11, 2021	TRN	Common Stock	0	Direct
March 1, 2019	CAT	Common Stock	51,800	Direct
March 1, 2019	CAT	Common Stock	—	Indirect
March 1, 2019	CAT	Employee Stock Options→ Common Stock (15,199)	15,199	Direct
March 1, 2019	CAT	Employee Stock Options→ Common Stock (30,964)	30,964	Direct
March 1, 2019	CAT	Employee Stock Options→ Common Stock (69,486)	69,486	Direct
March 1, 2019	CAT	Employee Stock Options→ Common Stock (33,774)	33,774	Direct