Matthew Trester - 15 Mar 2026 Form 4 Insider Report for Builders FirstSource, Inc. (BLDR)

Reporting relationship: Principal Accounting Officer
Issuer ticker: BLDR
Reported as of: 15 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 17 Mar 2026, 19:05:07 UTC
Prior SEC filing: 22 Apr 2025
Source filing: View source filing
Reporting owner signature: /s/ Minator Azemi, by power of attorney

Key filing fact

Matthew Trester filed Form 4 for Builders FirstSource, Inc. (BLDR) on 17 Mar 2026.

Key facts

This page summarizes Matthew Trester's Form 4 filing for Builders FirstSource, Inc. (BLDR).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 17 Mar 2026, 19:05.

Change

Previous filing in this sequence was filed on 22 Apr 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002043869 Primary reporting owner

Trester Matthew

Relationship: Principal Accounting Officer
Address: C/O BUILDERS FIRSTSOURCE, INC., 6031 CONNECTION DR., STE. 400, IRVING
Signature: /s/ Minator Azemi, by power of attorney
Signature date: 17 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BLDR transaction

Common Stock, par value $0.01 per share

Award

Transaction value
Shares: +1,419
Change %: +45%
Price: $0.000000^*
Shares after: 4,579
Date: 15 Mar 2026
Ownership: Direct
Footnotes: F1

BLDR transaction

Common Stock, par value $0.01 per share

Award

Transaction value
Shares: +698
Change %: +15%
Price: $0.000000^*
Shares after: 5,277
Date: 15 Mar 2026
Ownership: Direct
Footnotes: F2

BLDR transaction

Common Stock, par value $0.01 per share

Tax liability

Transaction value
Shares: -648
Change %: -12%
Price: $88.09^*
Shares after: 4,629
Date: 15 Mar 2026
Ownership: Direct
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Reflects the acquisition of restricted stock units pursuant to the Corporation's 2014 Incentive Plan. The restricted stock units vest in 33.3% increments on each of March 15, 2027-2029 and entitle the reporting person to one share of common stock for each restricted stock unit that vests.

Footnote F2

Reflects the vesting of performance-based restricted stock units granted pursuant to the Corporation's 2014 Incentive Plan.

Footnote F3

Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units.