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Insider Trading Intelligence
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AJ

Amal M. Johnson

ISRG
DIRECTOR · INTUITIVE SURGICAL INC · CIK 0001388397
FILING MIX · LIFETIME52%/48%
BUYS
48
SELLS
45
TOTAL VALUE
$39.35M
COMPANIES
3
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
111,339
AVG SELL PX
$379.98
TRADE KIND
SHOWING 93 / 93
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
22 backtested trades · 8 horizons · 5 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Amal M. Johnson, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d22+27.27%+0.60%+1.26%-0.67%+0.09%—
14d22+13.64%+2.98%+3.01%-0.03%+0.21%—
30d22+31.82%+1.43%+0.84%+0.59%+0.65%—
60d22+68.18%-1.80%-1.53%-0.27%-4.64%—
90d22+54.55%-1.77%-1.36%-0.41%-2.90%—
180d22+54.55%+1.73%+3.61%-1.88%-5.70%—
1y22+63.64%-0.79%+8.67%-9.46%-22.14%—
2y22(5 pending)+52.94%+22.66%+30.11%-7.45%-11.77%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
ISRG · 0 shares · as of Apr 30, 2026
05,31810,63715,95521,273202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 48 buys / 45 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASEGRANT
Stock grant
633——3,824May 12, 2026May 14, 2026 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
531——13,545Apr 30, 2026Apr 30, 2026 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
531——0Apr 30, 2026Apr 30, 2026 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASEGRANT
Stock grant
606——3,191May 13, 2025May 15, 2025 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
531——531May 1, 2025May 1, 2025 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
739——13,014Apr 25, 2025Apr 25, 2025 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
739——0Apr 25, 2025Apr 25, 2025 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
4,635$90.49$419.4K16,910Jan 28, 2025Jan 28, 2025 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE10b5-1
10b5-1 plan
4,635$566.60$2.63M12,275Jan 28, 2025Jan 28, 2025 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
4,635——0Jan 28, 2025Jan 28, 2025 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
7,298——0Sep 17, 2024Sep 19, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE10b5-1
10b5-1 plan
7,298$316.31$2.31M2,585Sep 17, 2024Sep 19, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASE
7,298$216.31$1.58M9,883Sep 17, 2024Sep 19, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE10b5-1
10b5-1 plan
2,083$300.00$624.9K2,585Aug 30, 2024Sep 4, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
370——0Aug 30, 2024Sep 4, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASE
370$225.44$83.4K2,955Aug 30, 2024Sep 4, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE10b5-1
10b5-1 plan
370$300.00$111.0K2,585Aug 30, 2024Sep 4, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
2,083——0Aug 30, 2024Sep 4, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASE
2,083$233.78$487.0K4,668Aug 30, 2024Sep 4, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
2,943$71.32$209.9K15,218Aug 1, 2024Aug 5, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
2,943——0Aug 1, 2024Aug 5, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE10b5-1
10b5-1 plan
2,943$443.30$1.30M12,275Aug 1, 2024Aug 5, 2024 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASEGRANT
Stock grant
585——2,585May 14, 2024May 16, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
739——739Apr 25, 2024Apr 26, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
569——12,275Apr 25, 2024Apr 26, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
569——0Apr 25, 2024Apr 26, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
6,696$56.97$381.5K18,402Jan 26, 2024Jan 29, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE10b5-1
10b5-1 plan
6,696$370.08$2.48M11,706Jan 26, 2024Jan 29, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
6,696——0Jan 26, 2024Jan 29, 2024 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
9,567——0Nov 16, 2023Nov 17, 2023 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
9,567$41.26$394.7K21,273Nov 16, 2023Nov 17, 2023 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE10b5-1
10b5-1 plan
9,567$300.00$2.87M11,706Nov 16, 2023Nov 17, 2023 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASEGRANT
Stock grant
7,298——7,298May 9, 2023May 11, 2023 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
482——11,706Apr 27, 2023Apr 28, 2023 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
569——569Apr 27, 2023Apr 28, 2023 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
1,709——1,709Apr 27, 2023Apr 28, 2023 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
482——0Apr 27, 2023Apr 28, 2023 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASE
500$218.44$109.2K2,000Dec 2, 2022Dec 5, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASE
500$218.44$109.2K500Dec 2, 2022Dec 5, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
6,375$239.36$1.53M11,224Nov 8, 2022Nov 9, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
6,375$53.76$342.7K17,599Nov 8, 2022Nov 9, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
6,375——0Nov 8, 2022Nov 9, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
6,375$210.76$1.34M11,224Sep 8, 2022Sep 9, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
6,375$53.76$342.7K17,599Sep 8, 2022Sep 9, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
6,375——6,375Sep 8, 2022Sep 9, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
6,375——12,750Aug 3, 2022Aug 4, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
6,375$53.76$342.7K17,599Aug 3, 2022Aug 4, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
6,375$238.04$1.52M11,224Aug 3, 2022Aug 4, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASEGRANT
Stock grant
6,130——6,130May 10, 2022May 11, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
482——482Apr 28, 2022Apr 29, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
1,448——1,448Apr 28, 2022Apr 29, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
555——0Apr 22, 2022Apr 26, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
555——11,224Apr 22, 2022Apr 26, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASE
7,329——0Mar 15, 2022Mar 16, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
1,033$336.13$347.2K1,689Mar 15, 2022Mar 16, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
3,892$335.07$1.30M2,722Mar 15, 2022Mar 16, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
89$339.13$30.2K1,500Mar 15, 2022Mar 16, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
1,915$334.10$639.8K6,614Mar 15, 2022Mar 16, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASE
7,329$229.90$1.68M8,829Mar 15, 2022Mar 16, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
300$332.87$99.9K8,529Mar 15, 2022Mar 16, 2022 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
SALE
100$337.17$33.7K1,589Mar 15, 2022Mar 16, 2022 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
7,500$64.36$482.7K18,169Nov 24, 2021Nov 26, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
7,500——0Nov 24, 2021Nov 26, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
7,500$333.73$2.50M10,669Nov 24, 2021Nov 26, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALEGRANT
Gift
500——10,669Nov 10, 2021Nov 12, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
2,500$193.08$482.7K6,223Aug 11, 2021Aug 12, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
2,500$1,001.63$2.50M3,723Aug 11, 2021Aug 12, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
2,500——2,500Aug 11, 2021Aug 12, 2021 ↗View →
CAMP
CAMP4 THERAPEUTICS CORP
PURCHASEGRANT
Stock grant
10,466——107,515Jul 28, 2021Jul 30, 2021 ↗View →
CAMP
CAMP4 THERAPEUTICS CORP
PURCHASE
5,000$12.12$60.6K97,049May 13, 2021May 14, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
2,500$817.82$2.04M3,723May 12, 2021May 13, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
2,500——5,000May 12, 2021May 13, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
2,500$193.08$482.7K6,223May 12, 2021May 13, 2021 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASEGRANT
Stock grant
4,948——4,948May 11, 2021May 13, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
255——0Apr 22, 2021Apr 23, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
185——185Apr 22, 2021Apr 23, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
557——557Apr 22, 2021Apr 23, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
255——3,723Apr 22, 2021Apr 23, 2021 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALEGRANT
Gift
6,000——3,468Aug 25, 2020Aug 26, 2020 ↗View →
CAMP
CAMP4 THERAPEUTICS CORP
PURCHASEGRANT
Stock grant
12,800——92,049Jul 29, 2020Jul 31, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
3,000——0May 20, 2020May 21, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
3,000$119.06$357.2K12,468May 20, 2020May 21, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
3,000$550.00$1.65M9,468May 20, 2020May 21, 2020 ↗View →
CAMP
CAMP4 THERAPEUTICS CORP
PURCHASE
42$6.28$26479,249May 18, 2020May 18, 2020 ↗View →
CAMP
CAMP4 THERAPEUTICS CORP
PURCHASE
29,958$5.69$170.5K79,207May 15, 2020May 18, 2020 ↗View →
ESS
ESSEX PROPERTY TRUST, INC.
PURCHASEGRANT
Stock grant
7,329——7,329May 12, 2020May 14, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
262——9,468Apr 23, 2020Apr 27, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
766——766Apr 23, 2020Apr 27, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASEGRANT
Stock grant
255——255Apr 23, 2020Apr 27, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
262——0Apr 23, 2020Apr 27, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
4,250——3,000Feb 5, 2020Feb 5, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
SALE
4,250$577.43$2.45M9,206Feb 5, 2020Feb 5, 2020 ↗View →
ISRG
INTUITIVE SURGICAL INC
PURCHASE
4,250$119.06$506.0K13,456Feb 5, 2020Feb 5, 2020 ↗View →
Other insiders · ISRG
Loading peer insiders…
About this filer
CIK 0001388397
ROLE
Director
PRIMARY
ISRG
COMPANIES
3
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001388397DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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One short email. Insider buys, congressional trades, and plain-English analysis.

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