Reporting owner · CIK 0002010300

Brosius Mark

Visual SEC Form 4 history across 1 companies, 46 transactions and 12 filings.

EVP, CMSCEVP & Chief Mfg and Supply ChaINTUITIVE SURGICAL INC
Open-market mix
Latest filingAug 21, 2026, 11:56 PM
Filings12Form 4 records
Buying$00 purchases
Selling$3.1M12 sales
Net value−$3.1MBuys minus sells
Companies19 securities
Most recentAug 21, 2026sale

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
Forward return is not available yet

We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.

Monthly open-market activity

Reported purchase and sale transaction counts

Buys Sells
530-3-5Feb 252Mar 25Jan 26Feb 265Mar 265Aug 26

Net value flow

Buys minus sells

Feb 25
$0
Mar 25
−$543K
Jan 26
$0
Feb 26
$0
Mar 26
−$2.4M
Aug 26
−$150.2K

Transaction texture

Ownership and ticket size

Average P/S size$261.6K
Median P/S size$271.5K
Direct46
Indirect0
Aug 21, 2026sale

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern7Derivative Transactionfiling-context14Direct Ownershipfiling-context46Large Holdings Increaseholdings14Large Holdings Reductionholdings16Large Salesize1Repeat Sellerpattern710b5-1 Detectedfiling-context17

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at INTUITIVE SURGICAL INC on Aug 21, 2026 valued at $28,919.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Latest sale

sale at INTUITIVE SURGICAL INC on Aug 21, 2026 valued at $28,919.

Review SEC filing

Associated companies

Visual map of known reporting history

ISRGINTUITIVE SURGICAL INC46 transactions · latest Aug 21, 2026, 11:56 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
ISRGBrosius Mark
EVPCMSC
sale10b5-177-$2.89MS
Direct Ownership Repeat Seller 10b5-1 Detected
−1.6%08/2108/21
ISRGBrosius Mark
EVPCMSC
sale10b5-177-$3.05MS
Direct Ownership Repeat Seller 10b5-1 Detected
−1.6%08/2108/20
ISRGBrosius Mark
EVPCMSC
sale10b5-177-$3.03MS
Direct Ownership 10b5-1 Detected
−7.2%08/1908/19
ISRGBrosius Mark
EVPCMSC
sale10b5-177-$3.03MS
Direct Ownership 10b5-1 Detected
−7.2%08/1908/18
ISRGBrosius Mark
EVPCMSC
sale10b5-177-$3.00MS
Direct Ownership 10b5-1 Detected
−7.2%08/1908/17
ISRGBrosius Mark
SVPCMSC
sale10b5-1645-$31.2MS
Cluster Selling Direct Ownership Large Holdings Reduction+2
−13.8%03/1003/09
ISRGBrosius Mark
SVPCMSC
sale10b5-1648-$31.7MS
Cluster Selling Direct Ownership Large Holdings Reduction+2
−13.8%03/1003/06
ISRGBrosius Mark
SVPCMSC
sale10b5-1648-$32.0MS
Cluster Selling Direct Ownership Repeat Seller+1
−18.0%03/0503/05
ISRGBrosius Mark
SVPCMSC
sale10b5-12.36k-$117MS
Cluster Selling Direct Ownership Large Holdings Reduction+3
−18.0%03/0503/04
ISRGBrosius Mark
SVPCMSC
sale10b5-1648-$31.6MS
Cluster Selling Direct Ownership 10b5-1 Detected
−18.0%03/0503/03

Brosius Mark Insider Activity FAQ

SEC Form 4 context

Who is Brosius Mark?

Brosius Mark is a reporting owner in SEC Form 4 filings with reporting owner CIK 0002010300.

Which companies has Brosius Mark reported transactions for?

INTUITIVE SURGICAL INC

When was Brosius Mark's latest insider buy?

No open-market insider purchase is available for this period.

When was Brosius Mark's latest insider sale?

sale at INTUITIVE SURGICAL INC on Aug 21, 2026 valued at $28,919.

Where can I see the original SEC filings?

Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.

Are performance metrics included?

This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.