Donald G Western

Insider

First SEC filing: Dec. 16, 2005 · Latest: Dec. 16, 2005

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.

Insider at

CAT selling Nov. 15, 2005

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 60 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

60 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 15, 2005	CAT	G	6,800	—	—	45,247 Direct	-13.07%	Disposed	(price as of 2026-08-21)
Nov. 15, 2005	CAT	M	19,396	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Nov. 15, 2005	CAT	S	19,396	$55.80	$1,082,297	52,047 Direct	-27.15%	Disposed	1376.6% (price as of 2026-08-21)
Nov. 15, 2005	CAT	M	19,396	$31.17	$604,573	71,443 Direct	+37.27%	Acquired	2543.3% (price as of 2026-08-21)
Oct. 26, 2005	CAT	I	1,925	$50.55	$97,309	52,047 Direct	+3.84%	Acquired	1529.9% (price as of 2026-08-21)
Sept. 1, 2005	CAT	M	19,396	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Sept. 1, 2005	CAT	S	19,396	$56.00	$1,086,176	50,122 Direct	-27.90%	Disposed	1371.3% (price as of 2026-08-21)
Sept. 1, 2005	CAT	M	19,396	$31.17	$604,573	69,518 Direct	+38.70%	Acquired	2543.3% (price as of 2026-08-21)
Aug. 10, 2005	CAT	M	24,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Aug. 10, 2005	CAT	S	24,000	$55.00	$1,320,000	50,122 Direct	-32.38%	Disposed	1398.0% (price as of 2026-08-21)
Aug. 10, 2005	CAT	M	24,000	$26.76	$642,240	74,122 Direct	+47.88%	Acquired	2978.9% (price as of 2026-08-21)
Aug. 5, 2005	CAT	S	37,205	$53.96	$2,007,582	50,122 Direct	-42.60%	Disposed	1426.9% (price as of 2026-08-21)
Aug. 5, 2005	CAT	M	18,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Aug. 5, 2005	CAT	M	19,205	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Aug. 5, 2005	CAT	M	18,000	$27.14	$488,520	87,327 Direct	+25.96%	Acquired	2935.8% (price as of 2026-08-21)
Aug. 5, 2005	CAT	M	19,205	$27.84	$534,667	69,327 Direct	+38.32%	Acquired	2859.5% (price as of 2026-08-21)
July 28, 2005	CAT	S	37,205	$54.05	$2,010,930	50,122 Direct	-42.60%	Disposed	1424.4% (price as of 2026-08-21)
July 28, 2005	CAT	M	19,205	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
July 28, 2005	CAT	M	18,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
July 28, 2005	CAT	M	18,000	$27.14	$488,520	87,327 Direct	+25.96%	Acquired	2935.8% (price as of 2026-08-21)
July 28, 2005	CAT	M	19,205	$27.84	$534,667	69,327 Direct	+38.32%	Acquired	2859.5% (price as of 2026-08-21)
July 19, 2005	CAT	M	14,132	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
July 19, 2005	CAT	M	24,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
July 19, 2005	CAT	S	14,132	$52.40	$740,517	50,122 Direct	-21.99%	Disposed	1472.4% (price as of 2026-08-21)
July 19, 2005	CAT	S	24,000	$52.50	$1,260,000	64,254 Direct	-27.19%	Disposed	1469.4% (price as of 2026-08-21)
July 19, 2005	CAT	M	14,132	$25.83	$365,030	88,254 Direct	+19.07%	Acquired	3089.8% (price as of 2026-08-21)
July 19, 2005	CAT	M	24,000	$26.76	$642,240	74,122 Direct	+47.88%	Acquired	2978.9% (price as of 2026-08-21)
June 17, 2005	CAT	M	12,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 17, 2005	CAT	M	9,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 17, 2005	CAT	S	21,000	$100.00	$2,100,000	27,047 Direct	-43.71%	Disposed	1547.8% (price as of 2026-08-21)
June 17, 2005	CAT	M	12,000	$51.66	$619,920	48,047 Direct	+33.29%	Acquired	3089.8% (price as of 2026-08-21)
June 17, 2005	CAT	M	9,000	$50.72	$456,480	36,047 Direct	+33.28%	Acquired	3148.9% (price as of 2026-08-21)
June 10, 2005	CAT	G	2,000	—	—	25,047 Direct	-7.39%	Disposed	(price as of 2026-08-21)
June 9, 2005	CAT	M	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 9, 2005	CAT	S	10,000	$97.00	$970,000	27,047 Direct	-26.99%	Disposed	1598.8% (price as of 2026-08-21)
June 9, 2005	CAT	M	10,000	$50.72	$507,200	37,047 Direct	+36.97%	Acquired	3148.9% (price as of 2026-08-21)
May 23, 2005	CAT	M	7,500	$50.72	$380,400	34,547 Direct	+27.73%	Acquired	3148.9% (price as of 2026-08-21)
May 23, 2005	CAT	S	7,500	$94.00	$705,000	27,047 Direct	-21.71%	Disposed	1653.0% (price as of 2026-08-21)
May 23, 2005	CAT	M	7,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 18, 2005	CAT	M	500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 18, 2005	CAT	S	500	$94.00	$47,000	27,028 Direct	-1.82%	Disposed	1653.0% (price as of 2026-08-21)
May 18, 2005	CAT	M	500	$50.72	$25,360	27,528 Direct	+1.85%	Acquired	3148.9% (price as of 2026-08-21)
Feb. 18, 2005	CAT	J	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 1, 2005	CAT	M	21,399	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 1, 2005	CAT	M	3,662	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 1, 2005	CAT	S	10,833	$90.00	$974,970	27,028 Direct	-28.61%	Disposed	1730.9% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	2,000	$90.17	$180,340	37,861 Direct	-5.02%	Disposed	1727.5% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	5,100	$90.15	$459,765	39,861 Direct	-11.34%	Disposed	1727.9% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	300	$90.14	$27,042	44,961 Direct	-0.66%	Disposed	1728.1% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	1,000	$90.13	$90,130	45,261 Direct	-2.16%	Disposed	1728.3% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	61	$90.12	$5,497	46,261 Direct	-0.13%	Disposed	1728.5% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	400	$90.07	$36,028	46,322 Direct	-0.86%	Disposed	1729.5% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	15,700	$90.06	$1,413,942	46,722 Direct	-25.15%	Disposed	1729.7% (price as of 2026-08-21)
Feb. 1, 2005	CAT	S	500	$90.05	$45,025	62,422 Direct	-0.79%	Disposed	1729.9% (price as of 2026-08-21)
Feb. 1, 2005	CAT	M	21,399	$38.41	$821,936	62,922 Direct	+51.54%	Acquired	4190.1% (price as of 2026-08-21)
Feb. 1, 2005	CAT	M	3,662	$32.91	$120,516	41,523 Direct	+9.67%	Acquired	4907.1% (price as of 2026-08-21)
Jan. 21, 2005	CAT	M	2,601	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 21, 2005	CAT	M	1,604	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 21, 2005	CAT	M	1,795	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 21, 2005	CAT	M	1,934	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 21, 2005	CAT	F	1,111	$89.86	$99,834	37,861 Direct	-2.85%	Disposed	1733.8% (price as of 2026-08-21)
Jan. 21, 2005	CAT	M	2,601	$38.41	$99,904	38,972 Direct	+7.15%	Acquired	4190.1% (price as of 2026-08-21)
Jan. 21, 2005	CAT	F	1,112	$89.86	$99,924	36,371 Direct	-2.97%	Disposed	1733.8% (price as of 2026-08-21)
Jan. 21, 2005	CAT	M	1,604	$62.34	$99,993	37,483 Direct	+4.47%	Acquired	2543.3% (price as of 2026-08-21)
Jan. 21, 2005	CAT	F	1,112	$89.86	$99,924	35,879 Direct	-3.01%	Disposed	1733.8% (price as of 2026-08-21)
Jan. 21, 2005	CAT	M	1,795	$55.69	$99,964	36,991 Direct	+5.10%	Acquired	2859.0% (price as of 2026-08-21)
Jan. 21, 2005	CAT	F	1,111	$89.86	$99,834	35,196 Direct	-3.06%	Disposed	1733.8% (price as of 2026-08-21)
Jan. 21, 2005	CAT	M	1,934	$51.66	$99,910	36,307 Direct	+5.63%	Acquired	3089.8% (price as of 2026-08-21)
Nov. 8, 2004	CAT	M	9,300	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Nov. 8, 2004	CAT	F	5,225	$86.84	$453,739	34,335 Direct	-13.21%	Disposed	1797.6% (price as of 2026-08-21)
Nov. 8, 2004	CAT	M	9,300	$32.91	$306,063	39,560 Direct	+30.73%	Acquired	4907.1% (price as of 2026-08-21)
Oct. 1, 2004	CAT	G	6,274	—	—	8,449 Indirect	+288.46%	Acquired	(price as of 2026-08-21)
Oct. 1, 2004	CAT	G	6,274	—	—	30,175 Direct	-17.21%	Disposed	(price as of 2026-08-21)
Sept. 29, 2004	CAT	G	3,500	—	—	2,175 Indirect	-61.67%	Disposed	(price as of 2026-08-21)
June 8, 2004	CAT	J	27,000	—	—	27,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 20, 2004	CAT	G	5,675	—	—	5,675 Indirect	—	Acquired	(price as of 2026-08-21)
Feb. 20, 2004	CAT	G	5,675	—	—	36,300 Direct	-13.52%	Disposed	(price as of 2026-08-21)
Jan. 20, 2004	CAT	F	437	$83.11	$36,319	41,975 Direct	-1.03%	Disposed	1882.7% (price as of 2026-08-21)
Jan. 6, 2004	CAT	G	1,000	—	—	42,424 Direct	-2.30%	Disposed	(price as of 2026-08-21)
Oct. 28, 2003	CAT	G	751	—	—	41,301 Direct	-1.79%	Disposed	(price as of 2026-08-21)

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
Nov. 15, 2005	CAT	Employee Stock Option [F3]	Common (19,396)	$31.17	June 8, 2009	19,396	Disposed
Sept. 1, 2005	CAT	Employee Stock Option [F3]	Common (19,396)	$31.17	June 8, 2009	19,396	Disposed
Aug. 10, 2005	CAT	Employee Stock Option [F3]	Common (24,000)	$26.76	June 12, 2011	24,000	Disposed
Aug. 5, 2005	CAT	Employee Stock Option [F3]	Common (18,000)	$27.14	June 10, 2013	18,000	Disposed
Aug. 5, 2005	CAT	Employee Stock Option [F3]	Common (19,205)	$27.84	June 9, 2008	19,205	Disposed
July 28, 2005	CAT	Employee Stock Option [F3]	Common (19,205)	$27.84	June 9, 2008	19,205	Disposed
July 28, 2005	CAT	Employee Stock Option [F3]	Common (18,000)	$27.14	June 10, 2013	18,000	Disposed
July 19, 2005	CAT	Employee Stock Option [F5]	Common (14,132)	$25.83	June 10, 2007	14,132	Disposed
July 19, 2005	CAT	Employee Stock Option [F5]	Common (24,000)	$26.76	June 12, 2011	24,000	Disposed
June 17, 2005	CAT	Employee Stock Option [F3]	Common (12,000)	$51.66	June 10, 2007	12,000	Disposed
June 17, 2005	CAT	Employee Stock Option [F3]	Common (9,000)	$50.72	June 11, 2012	9,000	Disposed
June 9, 2005	CAT	Employee Stock Option [F3]	Common (10,000)	$50.72	June 11, 2012	10,000	Disposed
May 23, 2005	CAT	Employee Stock Option [F3]	Common (7,500)	$50.72	June 11, 2012	7,500	Disposed
May 18, 2005	CAT	Employee Stock Option [F3]	Common (500)	$50.72	June 11, 2012	500	Disposed
Feb. 18, 2005	CAT	Option (NQ) [F3]	Common (30,000)	$91.28	Feb. 18, 2015	30,000	Acquired
Feb. 1, 2005	CAT	Employee Stock Option [F3]	Common (21,399)	$38.41	June 12, 2010	21,399	Disposed
Feb. 1, 2005	CAT	Employee Stock Option [F3]	Common (3,662)	$32.91	June 11, 2006	3,662	Disposed
Jan. 21, 2005	CAT	Employee Stock Option [F3]	Common (2,601)	$38.41	June 12, 2010	2,601	Disposed
Jan. 21, 2005	CAT	Employee Stock Option [F3]	Common (1,604)	$62.34	June 8, 2009	1,604	Disposed
Jan. 21, 2005	CAT	Employee Stock Option [F3]	Common (1,795)	$55.69	June 9, 2008	1,795	Disposed
Jan. 21, 2005	CAT	Employee Stock Option [F3]	Common (1,934)	$51.66	June 10, 2007	1,934	Disposed
Nov. 8, 2004	CAT	Employee Stock Option [F3]	Common (9,300)	$32.91	June 11, 2006	9,300	Disposed
June 8, 2004	CAT	Option (NQ) [F3]	Common (27,000)	$77.26	June 8, 2014	27,000	Acquired

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