Michael H Carrel

Insider

First SEC filing: Nov. 5, 2012 · Latest: Nov. 5, 2012

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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.
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 30, 2026	ATRC	G	4,000	—	—	774,434 Direct	-0.51%	Disposed	(price as of 2026-08-20)
July 30, 2026	ATRC	G	700	—	—	778,434 Direct	-0.09%	Disposed	(price as of 2026-08-20)
July 20, 2026	INSP	A	5,631	—	—	5,631 Direct	—	Acquired	(price as of 2026-08-20)
June 30, 2026	ATRC	A	636	$23.78	$15,124	779,134 Direct	+0.08%	Acquired	100.8% (price as of 2026-08-20)
March 6, 2026	ATRC	G	5,000	—	—	779,498 Direct	-0.64%	Disposed	(price as of 2026-08-20)
March 6, 2026	ATRC	G	1,000	—	—	778,498 Direct	-0.13%	Disposed	(price as of 2026-08-20)
March 1, 2026	ATRC	A	68,618	—	—	755,995 Direct	+9.98%	Acquired	(price as of 2026-08-20)
March 1, 2026	ATRC	A	101,280	—	—	857,275 Direct	+13.40%	Acquired	(price as of 2026-08-20)
March 1, 2026	ATRC	F	72,777	$31.26	$2,275,009	784,498 Direct	-8.49%	Disposed	52.8% (price as of 2026-08-20)
Dec. 10, 2025	ATRC	G	4,000	—	—	687,377 Direct	-0.58%	Disposed	(price as of 2026-08-20)
Nov. 13, 2025	ATRC	G	6,000	—	—	691,377 Direct	-0.86%	Disposed	(price as of 2026-08-20)
Aug. 8, 2025	ATRC	G	10,000	—	—	697,377 Direct	-1.41%	Disposed	(price as of 2026-08-20)
June 30, 2025	ATRC	A	822	$25.84	$21,240	707,377 Direct	+0.12%	Acquired	84.8% (price as of 2026-08-20)
March 10, 2025	ATRC	G	4,000	—	—	706,555 Direct	-0.56%	Disposed	(price as of 2026-08-20)
March 1, 2025	ATRC	A	50,335	—	—	703,574 Direct	+7.71%	Acquired	(price as of 2026-08-20)
March 1, 2025	ATRC	A	50,907	—	—	754,481 Direct	+7.24%	Acquired	(price as of 2026-08-20)
March 1, 2025	ATRC	F	43,926	$38.74	$1,701,693	710,555 Direct	-5.82%	Disposed	23.3% (price as of 2026-08-20)
Aug. 14, 2024	ATRC	G	3,000	—	—	653,239 Direct	-0.46%	Disposed	(price as of 2026-08-20)
June 28, 2024	ATRC	A	707	$19.35	$13,680	656,239 Direct	+0.11%	Acquired	146.8% (price as of 2026-08-20)
March 14, 2024	ATRC	G	2,000	—	—	655,532 Direct	-0.30%	Disposed	(price as of 2026-08-20)
March 1, 2024	ATRC	A	50,854	—	—	636,214 Direct	+8.69%	Acquired	(price as of 2026-08-20)
March 1, 2024	ATRC	A	69,142	—	—	705,356 Direct	+10.87%	Acquired	(price as of 2026-08-20)
March 1, 2024	ATRC	F	47,824	$36.28	$1,735,055	657,532 Direct	-6.78%	Disposed	31.6% (price as of 2026-08-20)
Nov. 27, 2023	ATRC	G	10,000	—	—	585,360 Direct	-1.68%	Disposed	(price as of 2026-08-20)
Aug. 4, 2023	ATRC	G	1,250	—	—	595,360 Direct	-0.21%	Disposed	(price as of 2026-08-20)
June 30, 2023	ATRC	A	557	$38.11	$21,227	596,610 Direct	+0.09%	Acquired	25.3% (price as of 2026-08-20)
May 31, 2023	ATRC	G	1,000	—	—	596,053 Direct	-0.17%	Disposed	(price as of 2026-08-20)
March 1, 2023	ATRC	A	69,234	—	—	598,130 Direct	+13.09%	Acquired	(price as of 2026-08-20)
March 1, 2023	ATRC	A	45,993	—	—	644,123 Direct	+7.69%	Acquired	(price as of 2026-08-20)
March 1, 2023	ATRC	F	45,470	$38.81	$1,764,691	598,653 Direct	-7.06%	Disposed	23.0% (price as of 2026-08-20)
March 1, 2023	ATRC	G	800	—	—	597,853 Direct	-0.13%	Disposed	(price as of 2026-08-20)
March 1, 2023	ATRC	G	800	—	—	597,053 Direct	-0.13%	Disposed	(price as of 2026-08-20)
Nov. 17, 2022	ATRC	G	6,000	—	—	528,896 Direct	-1.12%	Disposed	(price as of 2026-08-20)
June 30, 2022	ATRC	A	350	$34.73	$12,156	534,896 Direct	+0.07%	Acquired	37.5% (price as of 2026-08-20)
March 1, 2022	ATRC	A	67,109	—	—	555,081 Direct	+13.75%	Acquired	(price as of 2026-08-20)
March 1, 2022	ATRC	A	22,632	—	—	577,713 Direct	+4.08%	Acquired	(price as of 2026-08-20)
March 1, 2022	ATRC	F	43,167	$69.59	$3,003,992	534,546 Direct	-7.47%	Disposed	-31.4% (price as of 2026-08-20)
Feb. 24, 2022	ATRC	G	510	—	—	488,482 Direct	-0.10%	Disposed	(price as of 2026-08-20)
Feb. 24, 2022	ATRC	G	510	—	—	487,972 Direct	-0.10%	Disposed	(price as of 2026-08-20)
Dec. 31, 2021	ATRC	A	141	$59.10	$8,333	488,992 Direct	+0.03%	Acquired	-19.2% (price as of 2026-08-20)
Dec. 7, 2021	ATRC	G	10,000	—	—	488,851 Direct	-2.00%	Disposed	(price as of 2026-08-20)
Nov. 12, 2021	ATRC	G	345	—	—	498,851 Direct	-0.07%	Disposed	(price as of 2026-08-20)
Nov. 10, 2021	ATRC	G	345	—	—	499,196 Direct	-0.07%	Disposed	(price as of 2026-08-20)
June 30, 2021	ATRC	A	251	$45.72	$11,476	499,541 Direct	+0.05%	Acquired	4.5% (price as of 2026-08-20)
March 1, 2021	ATRC	F	55,241	$66.31	$3,663,031	499,290 Direct	-9.96%	Disposed	-28.0% (price as of 2026-08-20)
March 1, 2021	ATRC	A	20,358	—	—	554,531 Direct	+3.81%	Acquired	(price as of 2026-08-20)
March 1, 2021	ATRC	A	29,378	—	—	534,173 Direct	+5.82%	Acquired	(price as of 2026-08-20)
Feb. 12, 2021	ATRC	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 12, 2021	ATRC	S 10b5-1	25,000	$65.00	$1,625,000	504,795 Direct	-4.72%	Disposed	-26.5% (price as of 2026-08-20)
Feb. 12, 2021	ATRC	M	25,000	$21.04	$526,000	529,795 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Feb. 11, 2021	ATRC	M	25,000	—	—	25,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Feb. 11, 2021	ATRC	S 10b5-1	25,000	$64.00	$1,600,000	504,795 Direct	-4.72%	Disposed	-25.4% (price as of 2026-08-20)
Feb. 11, 2021	ATRC	M	25,000	$21.04	$526,000	529,795 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Feb. 10, 2021	ATRC	M	25,000	—	—	50,000 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Feb. 10, 2021	ATRC	S 10b5-1	25,000	$63.00	$1,575,000	504,795 Direct	-4.72%	Disposed	-24.2% (price as of 2026-08-20)
Feb. 10, 2021	ATRC	M	25,000	$21.04	$526,000	529,795 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Feb. 9, 2021	ATRC	M	25,000	—	—	75,000 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Feb. 9, 2021	ATRC	S 10b5-1	25,000	$62.00	$1,550,000	504,795 Direct	-4.72%	Disposed	-23.0% (price as of 2026-08-20)
Feb. 9, 2021	ATRC	M	25,000	$21.04	$526,000	529,795 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Feb. 8, 2021	ATRC	M	25,000	—	—	100,000 Direct	-20.00%	Disposed	(price as of 2026-08-20)
Feb. 8, 2021	ATRC	S 10b5-1	25,000	$61.00	$1,525,000	504,795 Direct	-4.72%	Disposed	-21.7% (price as of 2026-08-20)
Feb. 8, 2021	ATRC	M	25,000	$21.04	$526,000	529,795 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Feb. 2, 2021	ATRC	M	25,000	—	—	125,000 Direct	-16.67%	Disposed	(price as of 2026-08-20)
Feb. 2, 2021	ATRC	S 10b5-1	25,000	$60.00	$1,500,000	504,795 Direct	-4.72%	Disposed	-20.4% (price as of 2026-08-20)
Feb. 2, 2021	ATRC	M	25,000	$21.04	$526,000	529,795 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Jan. 11, 2021	ATRC	M	25,000	—	—	150,000 Direct	-14.29%	Disposed	(price as of 2026-08-20)
Jan. 11, 2021	ATRC	S 10b5-1	25,000	$59.00	$1,475,000	504,795 Direct	-4.72%	Disposed	-19.1% (price as of 2026-08-20)
Jan. 11, 2021	ATRC	M	25,000	$21.04	$526,000	529,795 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Dec. 31, 2020	ATRC	A	291	$38.48	$11,198	504,795 Direct	+0.06%	Acquired	24.1% (price as of 2026-08-20)
Dec. 28, 2020	ATRC	M	24,953	—	—	175,000 Direct	-12.48%	Disposed	(price as of 2026-08-20)
Dec. 28, 2020	ATRC	S 10b5-1	24,953	$58.00	$1,447,274	504,504 Direct	-4.71%	Disposed	-17.7% (price as of 2026-08-20)
Dec. 28, 2020	ATRC	M	24,953	$21.04	$525,011	529,457 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Dec. 23, 2020	ATRC	M	47	—	—	199,953 Direct	-0.02%	Disposed	(price as of 2026-08-20)
Dec. 23, 2020	ATRC	S 10b5-1	47	$58.00	$2,726	504,504 Direct	-0.01%	Disposed	-17.7% (price as of 2026-08-20)
Dec. 23, 2020	ATRC	M	47	$21.04	$989	504,551 Direct	+0.01%	Acquired	127.0% (price as of 2026-08-20)
Dec. 22, 2020	ATRC	M	25,000	—	—	200,000 Direct	-11.11%	Disposed	(price as of 2026-08-20)
Dec. 22, 2020	ATRC	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 22, 2020	ATRC	S 10b5-1	25,000	$57.00	$1,425,000	504,504 Direct	-4.72%	Disposed	-16.2% (price as of 2026-08-20)
Dec. 22, 2020	ATRC	M	25,000	$21.04	$526,000	529,504 Direct	+4.96%	Acquired	127.0% (price as of 2026-08-20)
Dec. 22, 2020	ATRC	S 10b5-1	25,000	$56.00	$1,400,000	504,504 Direct	-4.72%	Disposed	-14.7% (price as of 2026-08-20)
Dec. 22, 2020	ATRC	M	25,000	$21.04	$526,000	529,594 Direct	+4.95%	Acquired	127.0% (price as of 2026-08-20)
Dec. 21, 2020	ATRC	M	24,751	—	—	25,000 Direct	-49.75%	Disposed	(price as of 2026-08-20)
Dec. 21, 2020	ATRC	S 10b5-1	24,751	$55.00	$1,361,305	504,504 Direct	-4.68%	Disposed	-13.2% (price as of 2026-08-20)
Dec. 21, 2020	ATRC	M	24,751	$21.04	$520,761	529,255 Direct	+4.91%	Acquired	127.0% (price as of 2026-08-20)
Dec. 18, 2020	ATRC	M	50,249	—	—	49,751 Direct	-50.25%	Disposed	(price as of 2026-08-20)
Dec. 18, 2020	ATRC	S 10b5-1	50,249	$53.51	$2,688,824	504,504 Direct	-9.06%	Disposed	-10.8% (price as of 2026-08-20)
Dec. 18, 2020	ATRC	M	50,249	$21.04	$1,057,239	554,753 Direct	+9.96%	Acquired	127.0% (price as of 2026-08-20)
Dec. 17, 2020	ATRC	M	25,000	—	—	100,000 Direct	-20.00%	Disposed	(price as of 2026-08-20)
Dec. 17, 2020	ATRC	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 17, 2020	ATRC	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 17, 2020	ATRC	S 10b5-1	25,000	$52.00	$1,300,000	504,504 Direct	-4.72%	Disposed	-8.2% (price as of 2026-08-20)
Dec. 17, 2020	ATRC	M	25,000	$21.04	$526,000	529,504 Direct	+4.96%	Acquired	127.0% (price as of 2026-08-20)
Dec. 17, 2020	ATRC	S 10b5-1	25,000	$51.00	$1,275,000	504,504 Direct	-4.72%	Disposed	-6.4% (price as of 2026-08-20)
Dec. 17, 2020	ATRC	M	25,000	$5.91	$147,750	529,504 Direct	+4.96%	Acquired	708.0% (price as of 2026-08-20)
Dec. 17, 2020	ATRC	S 10b5-1	25,000	$50.00	$1,250,000	504,504 Direct	-4.72%	Disposed	-4.5% (price as of 2026-08-20)
Dec. 17, 2020	ATRC	M	25,000	$5.91	$147,750	529,504 Direct	+4.96%	Acquired	708.0% (price as of 2026-08-20)
Sept. 10, 2020	ATRC	G	10,000	—	—	504,504 Direct	-1.94%	Disposed	(price as of 2026-08-20)
June 30, 2020	ATRC	A	357	$28.11	$10,035	514,504 Direct	+0.07%	Acquired	69.9% (price as of 2026-08-20)
May 12, 2020	ATRC	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 11, 2020	ATRC	M	25,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)

Showing latest 100 of 173 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
Feb. 12, 2021	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Feb. 11, 2021	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Feb. 10, 2021	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Feb. 9, 2021	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Feb. 8, 2021	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Feb. 2, 2021	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Jan. 11, 2021	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Dec. 28, 2020	ATRC	Stock Option (Right to buy)	Common Stock (24,953)	$21.04	Jan. 24, 2024	24,953	Disposed
Dec. 23, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (47)	$21.04	Jan. 24, 2024	47	Disposed
Dec. 22, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Dec. 22, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Dec. 21, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (24,751)	$21.04	Jan. 24, 2024	24,751	Disposed
Dec. 18, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (50,249)	$21.04	Jan. 24, 2024	50,249	Disposed
Dec. 17, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$21.04	Jan. 24, 2024	25,000	Disposed
Dec. 17, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Dec. 17, 2020	ATRC	Stock Option (Right to buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
May 12, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
May 11, 2020	ATRC	Stock Option (Right to buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
May 8, 2020	ATRC	Stock Option (Right to buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Feb. 14, 2020	ATRC	Stock Option (Right to buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Feb. 13, 2020	ATRC	Stock Option (Right to buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Feb. 11, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Feb. 10, 2020	ATRC	Stock Option (Right to buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Jan. 29, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Jan. 15, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$5.91	Nov. 2, 2022	25,000	Disposed
Jan. 14, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Jan. 2, 2020	ATRC	Stock Option (Right to Buy)	Common Stock (23,546)	$5.91	Nov. 1, 2022	23,546	Disposed
July 31, 2019	ATRC	Stock Option (Right to Buy)	Common Stock (1,454)	$5.91	Nov. 1, 2022	1,454	Disposed
July 10, 2019	ATRC	Stock Option (Right to Buy)	Common Stock (25,000)	$5.91	Nov. 1, 2022	25,000	Disposed
Jan. 24, 2014	ATRC	Stock Option (right to buy)	Common Stock (225,000)	$21.04	Jan. 24, 2024	225,000	Acquired
Jan. 24, 2014	ATRC	Stock Option (right to buy)	Common Stock (125,000)	$21.04	Jan. 24, 2024	125,000	Acquired
Nov. 1, 2012	ATRC	Stock Option (right to buy)	Common Stock (250,000)	$5.91	Nov. 1, 2022	225,000	Acquired
Nov. 1, 2012	ATRC	Stock Option (right to buy)	Common Stock (125,000)	$5.91	Nov. 1, 2022	125,000	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Nov. 5, 2012	ATRC	Common Stock	0	Direct

Compensation (DEF 14A)

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

ATRC

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2014	$515,000	—	—	—	$653,522	—	$22,530	$6,536,022
2013	$500,000	—	—	—	$591,323	—	$22,289	$1,113,612
2012	$83,333	—	—	—	$118,125	—	—	$1,901,797

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