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SEC Form 4 research

PLATINUM UNDERWRITERS HOLDINGS LTD insider transactions

Inspect PLATINUM UNDERWRITERS HOLDINGS LTD's public SEC insider acquisitions and sales, reporting owners and source receipts.

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

Issuer CIK
0001171500
Reporting owners
21
Officers and directors
16
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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 · 17 rows, 3 columns

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Hass A John00013981166
BALDWIN H FURLONG00010351402
BANK JONATHAN F00012414806
CARMICHAEL DAN R00010141603
Decleir Allan Carl00014902537
DEUTSCH ROBERT V00011019983
Fisher Joseph F00012968461
Kurtzman Kenneth A000135681416
Lancaster Antony P.D.00014481891
LOMBARDOZZI MICHAEL E000124147121
Mitchell H Elizabeth000129548212
NEWMAN STEVEN H00012414961
Porter Robert S00013540767
PRICE MICHAEL D000124150831
PRUITT PETER T00012415102
SCHMIDT NEAL J000124151414
Steffen Christopher J000129326427
Hass A John ↗BALDWIN H FURLONG ↗BANK JONATHAN F ↗CARMICHAEL DAN R ↗Decleir Allan Carl ↗DEUTSCH ROBERT V ↗Fisher Joseph F ↗Kurtzman Kenneth A ↗Lancaster Antony P.D. ↗LOMBARDOZZI MICHAEL E ↗Mitchell H Elizabeth ↗NEWMAN STEVEN H ↗Porter Robert S ↗PRICE MICHAEL D ↗PRUITT PETER T ↗SCHMIDT NEAL J ↗Steffen Christopher J ↗

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.