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SEC Form 4 research

MATTRESS FIRM HOLDING CORP. insider transactions

Inspect MATTRESS FIRM HOLDING CORP.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

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

Issuer CIK
0001419852
Reporting owners
57
Officers and directors
33
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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 · 35 rows, 3 columns

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Berkshire Investors IV LLC0001505185160
Berkshire Fund VIII-A, L.P.000151445476
Berkshire Partners LLC0001312988225
Berkshire Fund VIII, L.P.000151447076
Berkshire Investors III LLC0001505184187
Berkshire Partners Holdings LLC0001597786178
Black James R0001534886900
BPSP, L.P.0001597787140
CHILDS JOHN W000102703545
EITEL CHARLES R000118040320
Fendrich Stephen G.0001534910108
Fiorentino David A00015059043
Forbes Karrie0001535415289
Fortunato Joe000137212784
Galvan Michael S000143712617
J.W. Childs Advisors III, L.P.00015349826
J.W. Childs Associates, Inc.00015349186
J.W. Childs Associates, L.P.00015349206
JWC FUND III CO INVEST LLC00012880594
JWC Mattress Holdings, LLC00015349736
Levy Bruce000153495143
McAndrews Craig0001574035101
McGill George W.0001534936111
Murphy Kenneth E. III0001535414359
Nuno Kindel000162655211
Stagner R. Stephen00015348871,444
Stockbridge Absolute Return Fund, L.P.0001505182160
Stockbridge Fund, L.P.0001501625196
Stockbridge Master Fund (OS), L.P.0001522786104
Stockbridge Partners LLC0001505183196
Suttin Adam L000150590513
Tinsey III Frederick C.000153488828
Watts William E000150589517
Weiss Alexander000160990014
Winter Street Opportunities Fund, L.P.00016050224

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.