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SEC Form 4 research

KOMAG INC /DE/ insider transactions

Inspect KOMAG INC /DE/'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0000813347
Reporting owners
18
Officers and directors
11
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

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Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Show the table · 15 rows, 3 columns

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BAYLESS KATHLEEN A0001230569167
WOLF DENNIS P000122756084
BRAHE PAUL A000122979342
EYRE CHRIS A00012309586
HAMMACK WILLIAM00012305728
HARRIS TIMOTHY DAVID000134009445
JUDY PAUL G000134301822
MARTIN RAY L000123057551
NORRIS PETER000123057649
RUSSAK MICHAEL A000123057891
TAKATA DAVID G000089874930
TAN THIAN H0001230579441
VAN WICKLE HARRY GEORGE00012507868
WORKMAN MICHAEL00012573583
YAMASHITA TSUTOMU T00012305809
BAYLESS KATHLEEN A ↗WOLF DENNIS P ↗BRAHE PAUL A ↗EYRE CHRIS A ↗HAMMACK WILLIAM ↗HARRIS TIMOTHY DAVID ↗JUDY PAUL G ↗MARTIN RAY L ↗NORRIS PETER ↗RUSSAK MICHAEL A ↗TAKATA DAVID G ↗TAN THIAN H ↗VAN WICKLE HARRY GEORGE ↗WORKMAN MICHAEL ↗YAMASHITA TSUTOMU T ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.