Thomas M Montgomery

Insider

First SEC filing: May 16, 2016 · Latest: Feb. 14, 2020

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

AME selling Dec. 22, 2025

Insider transactions

0 buys (P) 1 sells (S) Net: $-1,309,859 + 86 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

86 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 26, 2025	AME	G	19	—	—	22,097 Direct	-0.09%	Disposed	(price as of 2026-08-20)
Dec. 22, 2025	AME	M	6,388	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 22, 2025	AME	S	6,388	$205.05	$1,309,859	22,116 Direct	-22.41%	Disposed	17.1% (price as of 2026-08-20)
Dec. 22, 2025	AME	M	6,388	$85.45	$545,855	28,504 Direct	+28.88%	Acquired	180.9% (price as of 2026-08-20)
March 22, 2025	AME	F	87	$174.52	$15,183	22,116 Direct	-0.39%	Disposed	37.5% (price as of 2026-08-20)
March 21, 2025	AME	F	104	$174.52	$18,150	22,203 Direct	-0.47%	Disposed	37.5% (price as of 2026-08-20)
March 19, 2025	AME	F	50	$177.07	$8,854	22,307 Direct	-0.22%	Disposed	35.6% (price as of 2026-08-20)
March 18, 2025	AME	A	1,847	—	—	1,847 Direct	—	Acquired	(price as of 2026-08-20)
March 18, 2025	AME	A	603	$176.08	$106,176	22,357 Direct	+2.77%	Acquired	36.3% (price as of 2026-08-20)
Feb. 20, 2025	AME	J	21	—	—	3,283 Direct	+0.64%	Acquired	(price as of 2026-08-20)
Feb. 20, 2025	AME	J	22	—	—	3,441 Indirect	+0.64%	Acquired	(price as of 2026-08-20)
Feb. 20, 2025	AME	F	171	$188.78	$32,281	21,754 Direct	-0.78%	Disposed	27.1% (price as of 2026-08-20)
Feb. 20, 2025	AME	A	621	—	—	21,925 Direct	+2.91%	Acquired	(price as of 2026-08-20)
March 22, 2024	AME	F	135	$183.15	$24,725	21,304 Direct	-0.63%	Disposed	31.1% (price as of 2026-08-20)
March 21, 2024	AME	M	6,891	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 21, 2024	AME	F	104	$184.91	$19,231	21,439 Direct	-0.48%	Disposed	29.8% (price as of 2026-08-20)
March 21, 2024	AME	S	6,891	$185.38	$1,277,454	21,543 Direct	-24.24%	Disposed	29.5% (price as of 2026-08-20)
March 21, 2024	AME	M	6,891	$73.45	$506,144	28,434 Direct	+31.99%	Acquired	226.8% (price as of 2026-08-20)
March 19, 2024	AME	A	1,632	—	—	1,632 Direct	—	Acquired	(price as of 2026-08-20)
March 19, 2024	AME	A	538	$181.93	$97,878	21,543 Direct	+2.56%	Acquired	31.9% (price as of 2026-08-20)
March 11, 2024	AME	F	122	$180.86	$22,065	21,005 Direct	-0.58%	Disposed	32.7% (price as of 2026-08-20)
Feb. 22, 2024	AME	J	21	—	—	3,262 Direct	+0.65%	Acquired	(price as of 2026-08-20)
Feb. 22, 2024	AME	J	18	—	—	3,419 Indirect	+0.53%	Acquired	(price as of 2026-08-20)
Feb. 22, 2024	AME	F	241	$178.21	$42,949	21,127 Direct	-1.13%	Disposed	34.7% (price as of 2026-08-20)
Feb. 22, 2024	AME	A	874	—	—	21,368 Direct	+4.26%	Acquired	(price as of 2026-08-20)
Feb. 21, 2024	AME	G	36	—	—	20,494 Direct	-0.18%	Disposed	(price as of 2026-08-20)
March 22, 2023	AME	A	3,040	—	—	3,040 Direct	—	Acquired	(price as of 2026-08-20)
March 22, 2023	AME	A	948	$138.46	$131,260	20,530 Direct	+4.84%	Acquired	73.3% (price as of 2026-08-20)
March 21, 2023	AME	F	104	$140.07	$14,567	19,582 Direct	-0.53%	Disposed	71.4% (price as of 2026-08-20)
March 20, 2023	AME	F	151	$138.54	$20,920	19,686 Direct	-0.76%	Disposed	73.2% (price as of 2026-08-20)
March 13, 2023	AME	F	122	$135.35	$16,513	19,837 Direct	-0.61%	Disposed	77.3% (price as of 2026-08-20)
Feb. 21, 2023	AME	J	27	—	—	3,401 Indirect	+0.80%	Acquired	(price as of 2026-08-20)
Feb. 21, 2023	AME	J	23	—	—	3,241 Direct	+0.71%	Acquired	(price as of 2026-08-20)
Feb. 21, 2023	AME	F	324	$143.00	$46,332	19,959 Direct	-1.60%	Disposed	67.8% (price as of 2026-08-20)
Feb. 21, 2023	AME	A	1,176	—	—	20,283 Direct	+6.15%	Acquired	(price as of 2026-08-20)
Dec. 2, 2022	AME	M	9,581	$60.30	$577,734	28,688 Direct	+50.14%	Acquired	298.0% (price as of 2026-08-20)
Dec. 2, 2022	AME	S	4,581	$143.73	$658,427	24,107 Direct	-15.97%	Disposed	67.0% (price as of 2026-08-20)
Dec. 2, 2022	AME	S	5,000	$145.01	$725,050	19,107 Direct	-20.74%	Disposed	65.5% (price as of 2026-08-20)
Dec. 2, 2022	AME	M	9,581	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 10, 2022	AME	M	2,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 10, 2022	AME	S	2,000	$140.27	$280,540	19,107 Direct	-9.48%	Disposed	71.1% (price as of 2026-08-20)
Nov. 10, 2022	AME	M	2,000	$46.96	$93,920	21,107 Direct	+10.47%	Acquired	411.1% (price as of 2026-08-20)
May 9, 2022	AME	F	128	$121.84	$15,596	19,107 Direct	-0.67%	Disposed	97.0% (price as of 2026-08-20)
March 21, 2022	AME	A	4,089	—	—	4,089 Direct	—	Acquired	(price as of 2026-08-20)
March 21, 2022	AME	F	151	$134.69	$20,338	19,235 Direct	-0.78%	Disposed	78.2% (price as of 2026-08-20)
March 21, 2022	AME	A	1,127	$134.69	$151,796	19,386 Direct	+6.17%	Acquired	78.2% (price as of 2026-08-20)
March 11, 2022	AME	F	122	$126.34	$15,413	18,259 Direct	-0.66%	Disposed	90.0% (price as of 2026-08-20)
Feb. 22, 2022	AME	J	5	—	—	3,218 Direct	+0.16%	Acquired	(price as of 2026-08-20)
Feb. 22, 2022	AME	J	8	—	—	3,374 Indirect	+0.24%	Acquired	(price as of 2026-08-20)
Feb. 22, 2022	AME	F	343	$127.44	$43,712	18,381 Direct	-1.83%	Disposed	88.3% (price as of 2026-08-20)
Feb. 22, 2022	AME	A	1,246	—	—	18,724 Direct	+7.13%	Acquired	(price as of 2026-08-20)
Nov. 16, 2021	AME	J	23	—	—	3,213 Direct	+0.72%	Acquired	(price as of 2026-08-20)
Nov. 16, 2021	AME	J	8	—	—	3,366 Indirect	+0.24%	Acquired	(price as of 2026-08-20)
Nov. 16, 2021	AME	S	5,000	$142.12	$710,600	17,478 Direct	-22.24%	Disposed	68.9% (price as of 2026-08-20)
May 10, 2021	AME	F	268	$137.09	$36,740	22,478 Direct	-1.18%	Disposed	75.1% (price as of 2026-08-20)
March 29, 2021	AME	G	25	—	—	22,746 Direct	-0.11%	Disposed	(price as of 2026-08-20)
March 22, 2021	AME	F	151	$122.89	$18,556	22,771 Direct	-0.66%	Disposed	95.3% (price as of 2026-08-20)
March 11, 2021	AME	A	5,337	—	—	5,337 Direct	—	Acquired	(price as of 2026-08-20)
March 11, 2021	AME	A	1,328	$121.91	$161,896	22,922 Direct	+6.15%	Acquired	96.9% (price as of 2026-08-20)
Feb. 18, 2021	AME	F	382	$118.95	$45,439	21,594 Direct	-1.74%	Disposed	101.8% (price as of 2026-08-20)
Feb. 18, 2021	AME	A	1,387	—	—	21,976 Direct	+6.74%	Acquired	(price as of 2026-08-20)
Jan. 12, 2021	AME	J	8	$124.12	$993	3,190 Direct	+0.25%	Acquired	93.4% (price as of 2026-08-20)
Jan. 12, 2021	AME	J	8	$124.12	$993	3,358 Indirect	+0.24%	Acquired	93.4% (price as of 2026-08-20)
Jan. 12, 2021	AME	F	181	$124.12	$22,466	20,589 Direct	-0.87%	Disposed	93.4% (price as of 2026-08-20)
Dec. 28, 2020	AME	M	6,130	—	—	2,000 Direct	-75.40%	Disposed	(price as of 2026-08-20)
Dec. 28, 2020	AME	S	6,130	$120.25	$737,132	20,770 Direct	-22.79%	Disposed	99.6% (price as of 2026-08-20)
Dec. 28, 2020	AME	M	6,130	$46.96	$287,865	26,900 Direct	+29.51%	Acquired	411.1% (price as of 2026-08-20)
Aug. 11, 2020	AME	M	2,000	—	—	8,130 Direct	-19.74%	Disposed	(price as of 2026-08-20)
Aug. 11, 2020	AME	S	1,000	$101.59	$101,590	20,770 Direct	-4.59%	Disposed	136.3% (price as of 2026-08-20)
Aug. 11, 2020	AME	S	2,000	$101.50	$203,000	21,770 Direct	-8.41%	Disposed	136.5% (price as of 2026-08-20)
Aug. 11, 2020	AME	M	2,000	$46.96	$93,920	23,770 Direct	+9.19%	Acquired	411.1% (price as of 2026-08-20)
May 11, 2020	AME	F	280	$83.24	$23,307	21,770 Direct	-1.27%	Disposed	188.3% (price as of 2026-08-20)
May 8, 2020	AME	J	8	—	—	3,349 Indirect	+0.24%	Acquired	(price as of 2026-08-20)
May 8, 2020	AME	J	3	—	—	3,190 Direct	+0.09%	Acquired	(price as of 2026-08-20)
May 8, 2020	AME	F	140	$84.32	$11,805	22,050 Direct	-0.63%	Disposed	184.7% (price as of 2026-08-20)
March 20, 2020	AME	A	7,431	—	—	7,431 Direct	—	Acquired	(price as of 2026-08-20)
March 20, 2020	AME	A	1,645	$63.37	$104,244	22,190 Direct	+8.01%	Acquired	278.8% (price as of 2026-08-20)
March 18, 2020	AME	I	1,411	$65.65	$92,632	3,193 Direct	+79.18%	Acquired	265.6% (price as of 2026-08-20)
Nov. 7, 2019	AME	F	249	$96.20	$23,954	20,568 Direct	-1.20%	Disposed	149.5% (price as of 2026-08-20)
Nov. 6, 2019	AME	M	7,036	$52.27	$367,772	27,853 Direct	+33.80%	Acquired	359.2% (price as of 2026-08-20)
Nov. 6, 2019	AME	S	7,036	$96.10	$676,160	20,817 Direct	-25.26%	Disposed	149.8% (price as of 2026-08-20)
Nov. 6, 2019	AME	M	7,036	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 6, 2019	AME	J	5	—	—	1,773 Direct	+0.28%	Acquired	(price as of 2026-08-20)
June 27, 2019	AME	M	5,602	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 27, 2019	AME	S	5,602	$88.50	$495,777	20,817 Direct	-21.20%	Disposed	171.2% (price as of 2026-08-20)
June 27, 2019	AME	M	5,602	$53.13	$297,634	26,419 Direct	+26.91%	Acquired	351.8% (price as of 2026-08-20)
May 9, 2019	AME	A	6,388	—	—	6,388 Direct	—	Acquired	(price as of 2026-08-20)
May 9, 2019	AME	F	152	$85.45	$12,988	20,817 Direct	-0.72%	Disposed	180.9% (price as of 2026-08-20)
May 9, 2019	AME	A	1,391	$85.45	$118,861	20,969 Direct	+7.10%	Acquired	180.9% (price as of 2026-08-20)
May 8, 2019	AME	F	140	$85.49	$11,969	19,578 Direct	-0.71%	Disposed	180.8% (price as of 2026-08-20)
May 6, 2019	AME	J	3	—	—	1,768 Direct	+0.17%	Acquired	(price as of 2026-08-20)
May 6, 2019	AME	F	273	$86.52	$23,620	19,718 Direct	-1.37%	Disposed	177.4% (price as of 2026-08-20)
March 13, 2019	AME	M	3,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 13, 2019	AME	S	3,000	$81.00	$243,000	19,991 Direct	-13.05%	Disposed	196.3% (price as of 2026-08-20)
March 13, 2019	AME	M	3,000	$41.74	$125,220	22,991 Direct	+15.01%	Acquired	475.0% (price as of 2026-08-20)
Feb. 25, 2019	AME	M	3,536	—	—	3,000 Direct	-54.10%	Disposed	(price as of 2026-08-20)
Feb. 25, 2019	AME	S	3,536	$79.95	$282,703	19,991 Direct	-15.03%	Disposed	200.2% (price as of 2026-08-20)
Feb. 25, 2019	AME	M	3,536	$41.74	$147,593	23,527 Direct	+17.69%	Acquired	475.0% (price as of 2026-08-20)
Feb. 21, 2019	AME	M	200	—	—	6,536 Direct	-2.97%	Disposed	(price as of 2026-08-20)
Feb. 21, 2019	AME	S	200	$79.95	$15,990	19,991 Direct	-0.99%	Disposed	200.2% (price as of 2026-08-20)

Showing latest 100 of 128 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.

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
Dec. 22, 2025	AME	Stock Option	Common Stock (6,388)	$85.45	May 9, 2029	6,388	Disposed
March 18, 2025	AME	Stock Option	Common Stock (1,847)	$176.08	March 18, 2035	1,847	Acquired
March 21, 2024	AME	Stock Option	Common Stock (6,891)	$73.45	May 7, 2028	6,891	Disposed
March 19, 2024	AME	Stock Option	Common Stock (1,632)	$181.93	March 19, 2034	1,632	Acquired
March 22, 2023	AME	Stock Option	Common Stock (3,040)	$138.46	March 22, 2033	3,040	Acquired
Dec. 2, 2022	AME	Stock Option	Common Stock (9,581)	$60.30	May 8, 2024	9,581	Disposed
Nov. 10, 2022	AME	Stock Option	Common Stock (2,000)	$46.96	May 3, 2023	2,000	Disposed
March 21, 2022	AME	Stock Option	Common Stock (4,089)	$134.69	March 21, 2032	4,089	Acquired
March 11, 2021	AME	Stock Option	Common Stock (5,337)	$121.91	March 11, 2031	5,337	Acquired
Dec. 28, 2020	AME	Stock Option	Common Stock (6,130)	$46.96	May 3, 2023	6,130	Disposed
Aug. 11, 2020	AME	Stock Option	Common Stock (2,000)	$46.96	May 3, 2023	2,000	Disposed
March 20, 2020	AME	Stock Option	Common Stock (7,431)	$63.37	March 20, 2030	7,431	Acquired
Nov. 6, 2019	AME	Stock Option	Common Stock (7,036)	$52.27	May 5, 2022	7,036	Disposed
June 27, 2019	AME	Stock Option	Common Stock (5,602)	$53.13	May 7, 2021	5,602	Disposed
May 9, 2019	AME	Stock Option	Common Stock (6,388)	$85.45	May 9, 2029	6,388	Acquired
March 13, 2019	AME	Stock Option	Common Stock (3,000)	$41.74	May 7, 2020	3,000	Disposed
Feb. 25, 2019	AME	Stock Option	Common Stock (3,536)	$41.74	May 7, 2020	3,536	Disposed
Feb. 21, 2019	AME	Stock Option	Common Stock (200)	$41.74	May 7, 2020	200	Disposed
May 8, 2018	AME	Stock Option	Common Stock (6,891)	$73.45	May 7, 2028	6,891	Acquired
May 9, 2017	AME	Stock Option	Common Stock (9,581)	$60.30	May 8, 2024	9,581	Acquired
May 5, 2017	AME	Stock Option	Common Stock (6,864)	$34.05	April 30, 2019	6,864	Disposed

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

Initial ownership (Form 3) 8 holdings

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

Date	Ticker	Security	Shares	Ownership
May 16, 2016	AME	401k Plan	3,248	Indirect
May 16, 2016	AME	Common Stock	21,621	Direct
May 16, 2016	AME	Common Stock/serp	793	Direct
May 16, 2016	AME	Stock Option→ Common Stock (6,864)	6,864	Direct
May 16, 2016	AME	Stock Option→ Common Stock (6,736)	6,736	Direct
May 16, 2016	AME	Stock Option→ Common Stock (5,602)	5,602	Direct
May 16, 2016	AME	Stock Option→ Common Stock (7,036)	7,036	Direct
May 16, 2016	AME	Stock Option→ Common Stock (10,130)	10,130	Direct