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JOHN WENDELL THOMPSON

CIK 1207433 · Chairman and CEO · last filed 2026-08-04

JOHN WENDELL THOMPSON is a Chairman and CEO who has filed 283 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for RBRK, was dated Aug 4, 2026. Across all open-market trades the lifetime net is −$13.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $174.8M across reported positions. 94 SEC filings were submitted jointly with MICROSOFT CORP.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$174.79M

Companies

5

Total Filings

283

Lifetime Open-Market Net

-$13.49M

Filer Profile

Reported Address
C/O RUBRIK, INC.
3495 DEER CREEK ROAD
PALO ALTO, CA 94304
Related Filers
MICROSOFT CORP — 94 joint filings, latest 2023-12-15
ILLUMINA, INC. — 7 joint filings, latest 2022-05-27
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
RBRK Director 18,362 $92.14 $1.69M -$15.39M 26 2026-08-04
MSFT Director 28,345 $510.12 $14.46M $1.00M 91 2023-12-15
ILMN Director 10,162 $221.66 $2.25M $0 6 2022-05-27
UPS Director 17,135 $103.50 $1.77M $904.0K 14 2013-05-03
STX Director 193,608 $798.61 $154.62M $0 4 2010-10-29

Recent Filings

283 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-04 RBRK Mixed −2,500 -$1.00M EDGAR
2026-08-03 RBRK Notice (144) −7,500 -$542.7K EDGAR
2026-08-03 RBRK Notice (144) −33,000 -$2.39M EDGAR
2026-07-01 RBRK Mixed −2,500 -$1.12M EDGAR
2026-06-03 RBRK Mixed +1,209 -$1.14M EDGAR
2026-05-04 RBRK Mixed −2,500 -$749.1K EDGAR
2026-05-01 RBRK Notice (144) −7,500 -$398.9K EDGAR
2026-05-01 RBRK Notice (144) −33,000 -$1.75M EDGAR
2026-04-02 RBRK Mixed −2,500 -$660.3K EDGAR
2026-03-03 RBRK Mixed −2,500 -$723.6K EDGAR
Showing 1–10 of 283
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.