Jami K Nachtsheim

Insider

First SEC filing: June 2, 2026 · Latest: June 2, 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 + 53 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

53 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 2, 2026	CERS	A	60,000	—	—	268,362 Direct	+28.80%	Acquired	(price as of 2026-08-21)
April 30, 2026	ISRG	A	554	—	—	554 Direct	—	Acquired	(price as of 2026-08-21)
April 30, 2026	ISRG	M	531	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
April 30, 2026	ISRG	M	531	—	—	6,902 Direct	+8.33%	Acquired	(price as of 2026-08-21)
June 3, 2025	CERS	A	60,000	—	—	208,362 Direct	+40.44%	Acquired	(price as of 2026-08-21)
May 1, 2025	ISRG	A	531	—	—	531 Direct	—	Acquired	(price as of 2026-08-21)
May 1, 2025	ISRG	M 10b5-1	2,400	—	—	2,235 Direct	-51.78%	Disposed	(price as of 2026-08-21)
May 1, 2025	ISRG	S 10b5-1	2,400	$520.00	$1,248,000	6,371 Direct	-27.36%	Disposed	-28.2% (price as of 2026-08-21)
May 1, 2025	ISRG	M 10b5-1	2,400	$90.49	$217,176	8,771 Direct	+37.67%	Acquired	312.9% (price as of 2026-08-21)
April 25, 2025	ISRG	M	739	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
April 25, 2025	ISRG	M	739	—	—	6,371 Direct	+13.12%	Acquired	(price as of 2026-08-21)
June 5, 2024	CERS	A	40,000	$5.00	$200,000	148,362 Direct	+36.91%	Acquired	-44.0% (price as of 2026-08-21)
May 10, 2024	CERS	P	2,000	$1.79	$3,580	108,362 Direct	+1.88%	Acquired	56.4% (price as of 2026-08-21)
April 25, 2024	ISRG	A	739	—	—	739 Direct	—	Acquired	(price as of 2026-08-21)
April 25, 2024	ISRG	M	569	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
April 25, 2024	ISRG	M	569	—	—	5,632 Direct	+11.24%	Acquired	(price as of 2026-08-21)
June 7, 2023	CERS	A	40,000	$5.00	$200,000	106,362 Direct	+60.28%	Acquired	-44.0% (price as of 2026-08-21)
April 27, 2023	ISRG	A	569	—	—	569 Direct	—	Acquired	(price as of 2026-08-21)
April 27, 2023	ISRG	M	482	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
April 27, 2023	ISRG	A	1,709	—	—	1,709 Direct	—	Acquired	(price as of 2026-08-21)
April 27, 2023	ISRG	M	482	—	—	5,063 Direct	+10.52%	Acquired	(price as of 2026-08-21)
June 1, 2022	CERS	A	39,866	—	—	39,866 Direct	—	Acquired	(price as of 2026-08-21)
June 1, 2022	CERS	A	20,454	—	—	66,362 Direct	+44.55%	Acquired	(price as of 2026-08-21)
April 28, 2022	ISRG	A	482	—	—	482 Direct	—	Acquired	(price as of 2026-08-21)
April 28, 2022	ISRG	A	1,448	—	—	1,448 Direct	—	Acquired	(price as of 2026-08-21)
March 4, 2022	CERS	M	5,127	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 4, 2022	CERS	M	5,127	—	—	45,908 Direct	+12.57%	Acquired	(price as of 2026-08-21)
June 2, 2021	CERS	A	29,983	—	—	29,983 Direct	—	Acquired	(price as of 2026-08-21)
June 2, 2021	CERS	A	14,888	—	—	40,781 Direct	+57.50%	Acquired	(price as of 2026-08-21)
June 1, 2021	CERS	M	13,228	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 1, 2021	CERS	M	13,228	—	—	25,893 Direct	+104.45%	Acquired	(price as of 2026-08-21)
April 22, 2021	ISRG	A	185	—	—	185 Direct	—	Acquired	(price as of 2026-08-21)
April 22, 2021	ISRG	M	255	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
April 22, 2021	ISRG	A	557	—	—	557 Direct	—	Acquired	(price as of 2026-08-21)
April 22, 2021	ISRG	M	255	—	—	1,342 Direct	+23.46%	Acquired	(price as of 2026-08-21)
March 4, 2021	CERS	M	5,127	—	—	5,127 Direct	-50.00%	Disposed	(price as of 2026-08-21)
March 4, 2021	CERS	M	5,127	—	—	12,665 Direct	+68.02%	Acquired	(price as of 2026-08-21)
July 21, 2020	ISRG	S 10b5-1	20	$663.33	$13,267	1,087 Direct	-1.81%	Disposed	69.0% (price as of 2026-08-21)
June 3, 2020	CERS	A	28,177	—	—	28,177 Direct	—	Acquired	(price as of 2026-08-21)
June 3, 2020	CERS	A	13,228	—	—	13,228 Direct	—	Acquired	(price as of 2026-08-21)
March 4, 2020	CERS	M	5,128	—	—	10,254 Direct	-33.34%	Disposed	(price as of 2026-08-21)
March 4, 2020	CERS	M	5,128	—	—	7,538 Direct	+212.78%	Acquired	(price as of 2026-08-21)
Jan. 29, 2020	CERS	P	2,410	$4.15	$10,002	2,410 Direct	—	Acquired	-32.5% (price as of 2026-08-21)
June 5, 2019	CERS	A	11,184	—	—	11,184 Direct	—	Acquired	(price as of 2026-08-21)
June 5, 2019	CERS	A	23,703	—	—	23,703 Direct	—	Acquired	(price as of 2026-08-21)
April 25, 2019	ISRG	A	262	—	—	262 Direct	—	Acquired	(price as of 2026-08-21)
April 25, 2019	ISRG	A	786	—	—	786 Direct	—	Acquired	(price as of 2026-08-21)
April 19, 2019	ISRG	M	332	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
April 19, 2019	ISRG	M	332	—	—	845 Direct	+64.72%	Acquired	(price as of 2026-08-21)
March 4, 2019	CERS	A	15,382	—	—	15,382 Direct	—	Acquired	(price as of 2026-08-21)
March 4, 2019	CERS	A	29,197	—	—	29,197 Direct	—	Acquired	(price as of 2026-08-21)
April 19, 2018	ISRG	A	332	—	—	332 Direct	—	Acquired	(price as of 2026-08-21)
April 19, 2018	ISRG	M	513	$9.00	$4,617	0 Direct	-100.00%	Disposed	12353.5% (price as of 2026-08-21)
April 19, 2018	ISRG	A	996	—	—	996 Direct	—	Acquired	(price as of 2026-08-21)
April 19, 2018	ISRG	M	513	—	—	513 Direct	—	Acquired	(price as of 2026-08-21)
April 20, 2017	ISRG	A	171	—	—	171 Direct	—	Acquired	(price as of 2026-08-21)
April 20, 2017	ISRG	A	515	—	—	515 Direct	—	Acquired	(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
April 30, 2026	ISRG	Restricted Stock Units - 4-30-2026	Common Stock (554)	$0.00	—	554	Acquired
April 30, 2026	ISRG	Restricted Stock Units	Common Stock (531)	$0.00	—	531	Disposed
May 1, 2025	ISRG	Restricted Stock Units	Common Stock (531)	$0.00	—	531	Acquired
May 1, 2025	ISRG	Non-Qualified Stock Option (right to buy)	Common Stock (2,400)	$90.49	April 20, 2027	2,400	Disposed
April 25, 2025	ISRG	Restricted Stock Units	Common Stock (739)	$0.00	—	739	Disposed
April 25, 2024	ISRG	Restricted Stock Units	Common Stock (739)	$0.00	—	739	Acquired
April 25, 2024	ISRG	Restricted Stock Units	Common Stock (569)	$0.00	—	569	Disposed
April 27, 2023	ISRG	Restricted Stock Units	Common Stock (569)	$0.00	—	569	Acquired
April 27, 2023	ISRG	Restricted Stock Units	Common Stock (482)	$0.00	—	482	Disposed
April 27, 2023	ISRG	Non-Qualified Stock Option (right to buy)	Common Stock (1,709)	$295.92	April 26, 2030	1,709	Acquired
June 1, 2022	CERS	Option (Right to Buy)	Common Stock (39,866)	$4.84	May 31, 2032	39,866	Acquired
April 28, 2022	ISRG	Restricted Stock Units	Common Stock (482)	$0.00	—	482	Acquired
April 28, 2022	ISRG	Non-Qualified Stock Option (right to buy)	Common Stock (1,448)	$243.26	April 27, 2029	1,448	Acquired
March 4, 2022	CERS	Restricted Stock Unit	Common Stock (5,127)	—	—	5,127	Disposed
June 2, 2021	CERS	Option (Right to Buy)	Common Stock (29,983)	$5.62	—	29,983	Acquired
June 1, 2021	CERS	Restricted Stock Unit	Common Stock (13,228)	—	—	13,228	Disposed
April 22, 2021	ISRG	Restricted Stock Units	Common Stock (185)	$0.00	—	185	Acquired
April 22, 2021	ISRG	Restricted Stock Units	Common Stock (255)	$0.00	April 23, 2021	255	Disposed
April 22, 2021	ISRG	Non-Qualified Stock Option (right to buy)	Common Stock (557)	$859.66	April 22, 2031	557	Acquired
March 4, 2021	CERS	Restricted Stock Unit	Common Stock (5,127)	—	—	5,127	Disposed
June 3, 2020	CERS	Option (Right to Buy)	Common Stock (28,177)	$6.37	June 2, 2030	28,177	Acquired
June 3, 2020	CERS	Restricted Stock Unit	Common Stock (13,228)	—	—	13,228	Acquired
March 4, 2020	CERS	Restricted Stock Unit	Common Stock (5,128)	—	—	5,128	Disposed
June 5, 2019	CERS	Restricted Stock Unit	Common Stock (11,184)	—	—	11,184	Acquired
June 5, 2019	CERS	Option (Right to Buy)	Common Stock (23,703)	$4.80	June 4, 2029	23,703	Acquired
April 25, 2019	ISRG	Restricted Stock Units	Common Stock (262)	$0.00	April 26, 2020	262	Acquired
April 25, 2019	ISRG	Non-Qualified Stock Option (right to buy)	Common Stock (786)	$517.78	April 25, 2029	786	Acquired
April 19, 2019	ISRG	Restricted Stock Units	Common Stock (332)	$0.00	April 19, 2022	332	Disposed
March 4, 2019	CERS	Restricted Stock Units	Common Stock (15,382)	—	—	15,382	Acquired
March 4, 2019	CERS	Option (Right to Buy)	Common Stock (29,197)	$6.59	March 3, 2029	29,197	Acquired
April 19, 2018	ISRG	Restricted Stock Units	Common Stock (332)	$0.00	April 19, 2022	332	Acquired
April 19, 2018	ISRG	Restricted Stock Units	Common Stock (513)	$0.00	Feb. 21, 2018	513	Disposed
April 19, 2018	ISRG	Non-Qualified Stock Option (right to buy)	Common Stock (996)	$462.71	April 19, 2028	996	Acquired
April 20, 2017	ISRG	Restricted Stock Units	Common Stock (171)	$0.00	Feb. 21, 2018	171	Acquired
April 20, 2017	ISRG	Non-Qualified Stock Option (right to buy)	Common Stock (515)	$814.45	April 20, 2027	515	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
March 6, 2019	CERS	No securities owned	0	Direct