Alena Brenner - 20 Apr 2026 Form 3 Insider Report for Builders FirstSource, Inc. (BLDR)

Reporting relationship: EVP, CLO and Corp. Sec.
Issuer ticker: BLDR
Reported as of: 20 Apr 2026
Net transaction value: $0
SEC form: 3
Accepted by SEC: 30 Apr 2026, 16:05:12 UTC
Prior SEC filing: 26 Jul 2022
Source filing: View source filing
Reporting owner signature: /s/ Minator Azemi, by power of attorney

Key filing fact

Alena Brenner filed Form 3 for Builders FirstSource, Inc. (BLDR) on 30 Apr 2026.

Key facts

This page summarizes Alena Brenner's Form 3 filing for Builders FirstSource, Inc. (BLDR).
0 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 30 Apr 2026, 16:05.

Change

Previous filing in this sequence was filed on 26 Jul 2022.
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

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0001851662 Primary reporting owner

Brenner Alena

Relationship: EVP, CLO and Corp. Sec.
Address: C/O BUILDERS FIRSTSOURCE, INC., 6031 CONNECTION DR, STE 400, IRVING
Signature: /s/ Minator Azemi, by power of attorney
Signature date: 30 Apr 2026

Reported non-derivative transactions

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

BLDR holding

Common Stock, par value $0.01 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 17,989
Date: 20 Apr 2026
Ownership: Direct
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Reflects the acquisition of restricted stock units on April 30, 2026 pursuant to the Corporation's 2014 Incentive Plan. 40% of the RSUs vest on the first anniversary of the grant, 40% of the RSUs vest on the second anniversary of the grant, and 20% of the RSUs vest on the third anniversary of the grant and entitle the reporting person to one share of common stock for each restricted stock unit that vests.