Reporting owner · CIK 0001713941

Goeckeler David

SEC Form 4 history across 1 companies, 34 transactions and 6 filings.

CHAIR, CEOChairman & CEOSandisk Corp
Open-market transaction mix0% buys0 buys · 28 sales
Latest filingSep 21, 2026, 10:03 PM

Available history · May 25, 2026 – Sep 17, 2026

Filings6Form 4 records
Buying$00 purchases
Selling$105M28 sales
Net value−$105MBuys minus sells · disclosed values

Latest insider transactions

Form 4 filings from available history.
Goeckeler David transactions · 20 per page
CompanyInsiderActivityDisclosed valueFiled (ET)
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$261kView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$2.41MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$1.71MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$2.33MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$1.01MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$4.53MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$6.52MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$4.37MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$4.07MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$481kView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$1.81MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$7.16MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$1.42MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$15.0MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$62.6kView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOA · grant10b5-1 detectedSEC filing ↗$0View disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$555kView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$1.33MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$2.27MView disclosure →
SNDKSandisk Corp
Goeckeler DavidCHAIR · CEOS · sale10b5-1 detectedSEC filing ↗-$4.92MView disclosure →
Open a transaction for shares, transaction date, ownership and the original SEC filing.

Latest Form 4 facts

Quick context from source filings

Latest open-market transaction

sale at Sandisk Corp on Sep 17, 2026 valued at $261,855.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Monthly open-market activity

Last 3 reported months · purchases and sales

View exact monthly values
MonthPurchasesSalesBuy valueSale valueNet value
May 202600$0.00$0.00$0.00
Aug 202600$0.00$0.00$0.00
Sep 2026028$0.00$104,972,834.42-$104,972,834.42

Net value is disclosed purchases minus sales, not profit. A dash means the value is unavailable.

Ownership and transaction size

Ownership and ticket size

Average P/S size$3.7M
Median P/S size$2.3M
Direct34
Indirect0
Sep 17, 2026sale

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern15Direct Ownershipfiling-context20Large Salesize12Repeat Sellerpattern1510b5-1 Detectedfiling-context16

Associated companies

Companies in the disclosed reporting history

Sandisk CorpSNDK · 36 transactions · latest Sep 21, 2026, 10:03 PM

Open-market buy performance

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

90d forward
No open-market purchases in available history

A 90-day purchase return requires an open-market buy. No eligible purchases are recorded in this history.

Disclosed ownership

How reported shareholdings evolved

Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.

34 observations · May 25, 2026 – Sep 17, 2026. Window ends at the latest available report, not today.

Selected observation · Sep 17, 2026382,865 shares reported
Inspect transaction
View exact observations and source transactions
Transaction dateShares held afterFiledSource
May 25, 2026509,903May 27, 2026View transaction
Aug 20, 2026508,603Aug 24, 2026View transaction
Aug 21, 2026507,570Aug 24, 2026View transaction
Aug 25, 2026457,788Aug 27, 2026View transaction
Sep 3, 2026447,248Sep 9, 2026View transaction
Sep 14, 2026432,884Sep 16, 2026View transaction
Sep 14, 2026432,703Sep 16, 2026View transaction
Sep 14, 2026429,628Sep 16, 2026View transaction
Sep 14, 2026427,348Sep 16, 2026View transaction
Sep 14, 2026423,268Sep 16, 2026View transaction
Sep 14, 2026422,909Sep 16, 2026View transaction
Sep 14, 2026421,709Sep 16, 2026View transaction
Sep 14, 2026421,009Sep 16, 2026View transaction
Sep 14, 2026419,314Sep 16, 2026View transaction
Sep 14, 2026416,114Sep 16, 2026View transaction
Sep 14, 2026414,634Sep 16, 2026View transaction
Sep 14, 2026413,770Sep 16, 2026View transaction
Sep 14, 2026413,410Sep 16, 2026View transaction
Sep 17, 2026416,706Sep 21, 2026View transaction
Sep 17, 2026416,666Sep 21, 2026View transaction
Sep 17, 2026407,062Sep 21, 2026View transaction
Sep 17, 2026406,152Sep 21, 2026View transaction
Sep 17, 2026401,594Sep 21, 2026View transaction
Sep 17, 2026400,437Sep 21, 2026View transaction
Sep 17, 2026400,131Sep 21, 2026View transaction
Sep 17, 2026397,543Sep 21, 2026View transaction
Sep 17, 2026394,765Sep 21, 2026View transaction
Sep 17, 2026390,626Sep 21, 2026View transaction
Sep 17, 2026387,750Sep 21, 2026View transaction
Sep 17, 2026387,110Sep 21, 2026View transaction
Sep 17, 2026385,630Sep 21, 2026View transaction
Sep 17, 2026384,550Sep 21, 2026View transaction
Sep 17, 2026383,030Sep 21, 2026View transaction
Sep 17, 2026382,865Sep 21, 2026View transaction

Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.

Goeckeler David Insider Activity FAQ

SEC Form 4 context

Who is Goeckeler David?

Goeckeler David is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001713941.

Which companies has Goeckeler David reported transactions for?

Sandisk Corp

When was Goeckeler David's latest insider buy?

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

When was Goeckeler David's latest insider sale?

sale at Sandisk Corp on Sep 17, 2026 valued at $261,855.

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?

The profile shows average and median 90-day stock returns after open-market purchases when price coverage is available. These are unadjusted stock returns, not realized trading gains. Win rates, benchmark-adjusted returns and conviction scores are not calculated.