Mark Brosius
CIK 2010300 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 5, 2024 · Latest: June 12, 2026
On this page
Insider at
Insider transactions
0 buys (P)
8 sells (S)
Net:
$-78,989
+ 27 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
27 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| July 31, 2026 | ISRG | S 10b5-1 | 28 | $351.00 | $9,828 | 1,266 Direct | -2.16% | Disposed | 14.7% (price as of 2026-08-19) |
| July 30, 2026 | ISRG | S 10b5-1 | 28 | $346.83 | $9,711 | 1,294 Direct | -2.12% | Disposed | 16.1% (price as of 2026-08-19) |
| July 29, 2026 | ISRG | S 10b5-1 | 28 | $360.21 | $10,086 | 1,322 Direct | -2.07% | Disposed | 11.8% (price as of 2026-08-19) |
| July 28, 2026 | ISRG | S 10b5-1 | 28 | $365.58 | $10,236 | 1,350 Direct | -2.03% | Disposed | 10.1% (price as of 2026-08-19) |
| July 27, 2026 | ISRG | S 10b5-1 | 28 | $344.00 | $9,632 | 1,378 Direct | -1.99% | Disposed | 17.0% (price as of 2026-08-19) |
| June 12, 2026 | ISRG | S 10b5-1 | 25 | $414.13 | $10,353 | 1,406 Direct | -1.75% | Disposed | -2.8% (price as of 2026-08-19) |
| June 11, 2026 | ISRG | S 10b5-1 | 23 | $412.16 | $9,480 | 1,431 Direct | -1.58% | Disposed | -2.3% (price as of 2026-08-19) |
| June 8, 2026 | ISRG | S | 23 | $420.12 | $9,663 | 1,454 | — | — | -4.2% (price as of 2026-08-19) |
| June 6, 2025 | ISRG | S 10b5-1 | 216 | $563.11 | $121,632 | 907 Direct | -19.23% | Disposed | -28.5% (price as of 2026-08-19) |
| June 5, 2025 | ISRG | S 10b5-1 | 215 | $560.70 | $120,550 | 1,123 Direct | -16.07% | Disposed | -28.2% (price as of 2026-08-19) |
| June 4, 2025 | ISRG | S 10b5-1 | 215 | $552.07 | $118,695 | 1,338 Direct | -13.84% | Disposed | -27.1% (price as of 2026-08-19) |
| June 3, 2025 | ISRG | S 10b5-1 | 215 | $550.68 | $118,396 | 1,553 Direct | -12.16% | Disposed | -26.9% (price as of 2026-08-19) |
| June 2, 2025 | ISRG | S 10b5-1 | 215 | $549.06 | $118,048 | 1,768 Direct | -10.84% | Disposed | -26.7% (price as of 2026-08-19) |
| May 16, 2025 | ISRG | S 10b5-1 | 20 | $563.81 | $11,276 | 1,983 Direct | -1.00% | Disposed | -28.6% (price as of 2026-08-19) |
| May 15, 2025 | ISRG | S 10b5-1 | 22 | $560.00 | $12,320 | 2,003 Direct | -1.09% | Disposed | -28.1% (price as of 2026-08-19) |
| May 14, 2025 | ISRG | S 10b5-1 | 22 | $563.00 | $12,386 | 2,025 Direct | -1.07% | Disposed | -28.5% (price as of 2026-08-19) |
| May 13, 2025 | ISRG | S 10b5-1 | 22 | $561.67 | $12,357 | 2,047 Direct | -1.06% | Disposed | -28.3% (price as of 2026-08-19) |
| May 12, 2025 | ISRG | S 10b5-1 | 22 | $551.97 | $12,143 | 2,069 Direct | -1.05% | Disposed | -27.1% (price as of 2026-08-19) |
| March 7, 2025 | ISRG | S 10b5-1 | 489 | $533.18 | $260,725 | 2,091 Direct | -18.95% | Disposed | -24.5% (price as of 2026-08-19) |
| March 6, 2025 | ISRG | S 10b5-1 | 492 | $558.95 | $275,003 | 2,580 Direct | -16.02% | Disposed | -28.0% (price as of 2026-08-19) |
| March 5, 2025 | ISRG | S 10b5-1 | 492 | $554.17 | $272,652 | 3,072 Direct | -13.80% | Disposed | -27.3% (price as of 2026-08-19) |
| March 4, 2025 | ISRG | S 10b5-1 | 492 | $563.69 | $277,335 | 3,564 Direct | -12.13% | Disposed | -28.6% (price as of 2026-08-19) |
| March 3, 2025 | ISRG | S 10b5-1 | 492 | $573.78 | $282,300 | 4,056 Direct | -10.82% | Disposed | -29.8% (price as of 2026-08-19) |
| Oct. 28, 2024 | ISRG | S 10b5-1 | 22 | $513.66 | $11,301 | 185 Direct | -10.63% | Disposed | -21.6% (price as of 2026-08-19) |
| Oct. 25, 2024 | ISRG | S 10b5-1 | 22 | $514.00 | $11,308 | 207 Direct | -9.61% | Disposed | -21.7% (price as of 2026-08-19) |
| Oct. 24, 2024 | ISRG | S 10b5-1 | 22 | $510.79 | $11,237 | 229 Direct | -8.76% | Disposed | -21.2% (price as of 2026-08-19) |
| Oct. 23, 2024 | ISRG | S 10b5-1 | 22 | $513.89 | $11,306 | 251 Direct | -8.06% | Disposed | -21.7% (price as of 2026-08-19) |
| Oct. 22, 2024 | ISRG | S 10b5-1 | 22 | $515.00 | $11,330 | 273 Direct | -7.46% | Disposed | -21.8% (price as of 2026-08-19) |
| Oct. 22, 2024 | ISRG | S 10b5-1 | 2,106 | $515.00 | $1,084,590 | 295 Direct | -87.71% | Disposed | -21.8% (price as of 2026-08-19) |
| May 17, 2024 | ISRG | S 10b5-1 | 63 | $396.19 | $24,960 | 295 Direct | -17.60% | Disposed | 1.6% (price as of 2026-08-19) |
| May 16, 2024 | ISRG | S 10b5-1 | 175 | $398.28 | $69,699 | 358 Direct | -32.83% | Disposed | 1.1% (price as of 2026-08-19) |
| May 15, 2024 | ISRG | S 10b5-1 | 175 | $387.22 | $67,764 | 533 Direct | -24.72% | Disposed | 4.0% (price as of 2026-08-19) |
| May 14, 2024 | ISRG | S 10b5-1 | 175 | $380.85 | $66,649 | 708 Direct | -19.82% | Disposed | 5.7% (price as of 2026-08-19) |
| May 13, 2024 | ISRG | S 10b5-1 | 175 | $389.16 | $68,103 | 883 Direct | -16.54% | Disposed | 3.5% (price as of 2026-08-19) |
| March 11, 2024 | ISRG | S 10b5-1 | 196 | $390.16 | $76,471 | 1,058 Direct | -15.63% | Disposed | 3.2% (price as of 2026-08-19) |
| March 8, 2024 | ISRG | S 10b5-1 | 196 | $392.02 | $76,836 | 1,254 Direct | -13.52% | Disposed | 2.7% (price as of 2026-08-19) |
| March 7, 2024 | ISRG | S 10b5-1 | 196 | $393.30 | $77,087 | 1,450 Direct | -11.91% | Disposed | 2.4% (price as of 2026-08-19) |
| March 6, 2024 | ISRG | S 10b5-1 | 196 | $386.76 | $75,805 | 1,646 Direct | -10.64% | Disposed | 4.1% (price as of 2026-08-19) |
| March 5, 2024 | ISRG | S 10b5-1 | 196 | $400.00 | $78,400 | 1,842 Direct | -9.62% | Disposed | 0.7% (price as of 2026-08-19) |
| Feb. 16, 2024 | ISRG | S 10b5-1 | 32 | $378.29 | $12,105 | 709 Direct | -4.32% | Disposed | 6.4% (price as of 2026-08-19) |
| Feb. 15, 2024 | ISRG | S 10b5-1 | 30 | $382.03 | $11,461 | 741 Direct | -3.89% | Disposed | 5.4% (price as of 2026-08-19) |
| Feb. 14, 2024 | ISRG | S 10b5-1 | 30 | $380.09 | $11,403 | 771 Direct | -3.75% | Disposed | 5.9% (price as of 2026-08-19) |
| Feb. 13, 2024 | ISRG | S 10b5-1 | 30 | $375.50 | $11,265 | 801 Direct | -3.61% | Disposed | 7.2% (price as of 2026-08-19) |
| Feb. 12, 2024 | ISRG | S 10b5-1 | 30 | $386.09 | $11,583 | 831 Direct | -3.48% | Disposed | 4.3% (price as of 2026-08-19) |
| Feb. 1, 2024 | ISRG | S 10b5-1 | 39 | $378.41 | $14,758 | 448 Direct | -8.01% | Disposed | 6.4% (price as of 2026-08-19) |
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. 28, 2025 | ISRG | Restricted Stock Units - 2-28-2022 | Common Stock (877) | $0.00 | — | 877 | Disposed |
| Feb. 26, 2025 | ISRG | Restricted Stock Units - 2-26-2025 | Common Stock (3,891) | $0.00 | — | 3,891 | Acquired |
| Feb. 26, 2025 | ISRG | Restricted Stock Units - 2-26-2024 | Common Stock (1,622) | $0.00 | — | 1,622 | Disposed |
| Feb. 26, 2025 | ISRG | Restricted Stock Units - 2-26-2021 | Common Stock (855) | $0.00 | — | 855 | Disposed |
| Feb. 10, 2025 | ISRG | Restricted Stock Units - 2-28-2023 | Common Stock (838) | $0.00 | — | 838 | Disposed |
| Oct. 22, 2024 | ISRG | Non-Qualified Stock Option (right to buy) | Common Stock (2,106) | $77.00 | Aug. 15, 2026 | 2,106 | Disposed |
| Feb. 29, 2024 | ISRG | Restricted Stock Units - 2-28-2022 | Common Stock (877) | $0.00 | — | 877 | Disposed |
| Feb. 29, 2024 | ISRG | Restricted Stock Units - 2-28-2020 | Common Stock (966) | $0.00 | — | 966 | Disposed |
| Feb. 26, 2024 | ISRG | Restricted Stock Units - 2-26-2024 | Common Stock (6,487) | $0.00 | — | 6,487 | Acquired |
| Feb. 26, 2024 | ISRG | Restricted Stock Units - 2-26-2021 | Common Stock (855) | $0.00 | — | 855 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 21 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 5, 2024 | ISRG | Common Stock | 487 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (2,115) | 2,115 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,250) | 5,250 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (4,416) | 4,416 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (2,106) | 2,106 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (4,500) | 4,500 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (4,500) | 4,500 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (4,413) | 4,413 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,250) | 5,250 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,799) | 5,799 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,263) | 5,263 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,028) | 5,028 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,799) | 5,799 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,133) | 5,133 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,263) | 5,263 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,028) | 5,028 | Direct |
| Feb. 5, 2024 | ISRG | Non-Qualified Stock Option (right to buy)→ Common Stock (5,133) | 5,133 | Direct |
| Feb. 5, 2024 | ISRG | Restricted Stock Units→ Common Stock (3,352) | 3,352 | Direct |
| Feb. 5, 2024 | ISRG | Restricted Stock Units→ Common Stock (966) | 966 | Direct |
| Feb. 5, 2024 | ISRG | Restricted Stock Units→ Common Stock (1,710) | 1,710 | Direct |
| Feb. 5, 2024 | ISRG | Restricted Stock Units→ Common Stock (2,631) | 2,631 | Direct |