Public ownership evidence

Builders FirstSource, Inc. (BLDR) Ownership Disclosures

Read BLDR insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Builders FirstSource, Inc.: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-14
Trade date
2026-09-10
Reporting owners
Steinke Craig Arthur
Code
A
Shares
564
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001193125-26-390554
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read BLDR fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read BLDR fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-09-142026-09-10Steinke Craig ArthurA564Not reported
2026-09-142026-09-10OLEARY JAMESA564Not reported
2026-09-142026-09-10Charles Dirkson RA470Not reported
2026-09-142026-09-10Renz MariaA489Not reported
2026-09-142026-09-10LEVY PAUL SA1,204Not reported
2026-09-142026-09-10Hayes William BA583Not reported
2026-09-142026-09-10CHRISTOPHE CLEVELAND AA564Not reported
2026-09-142026-09-10Boydston Cory JacobsA470Not reported
2026-07-222026-07-18O'Brien Matthew ColeyA7,406Not reported
2026-07-222026-07-18Vaughn PaulA3,366Not reported
2026-07-222026-07-18Vance ToddA3,366Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-297$626None
Cornerstone Financial Management LLC2026-03-312026-08-295$412None
Advisors Asset Management, Inc.2021-12-312026-08-28703$60,254None
Advisors Asset Management, Inc.2022-12-312026-08-28706$45,805None
Advisors Asset Management, Inc.2022-06-302026-08-28623$33,000None
Advisors Asset Management, Inc.2021-09-302026-08-28735$38,000None
Corient Private Wealth LP2026-06-302026-08-282,599$232,559None
Corient Private Wealth LP2026-06-302026-08-2832,242$2,885,016None
Redwood Investment Management, LLC2024-12-312026-08-2810,023$1,433,000None
Redwood Investment Management, LLC2025-03-312026-08-2810,524$1,315,000None
Principia Wealth Advisory, LLC2026-06-302026-08-2720$1,790None
Principia Wealth Advisory, LLC2026-03-312026-08-274$329None
Advisors Asset Management, Inc.2024-03-312026-08-272,046$426,693None
Advisors Asset Management, Inc.2025-03-312026-08-271,053$131,562None
Advisors Asset Management, Inc.2022-09-302026-08-27300$18,000None
Advisors Asset Management, Inc.2022-03-312026-08-27643$41,499None
Advisors Asset Management, Inc.2023-06-302026-08-271,451$197,336None
Advisors Asset Management, Inc.2023-09-302026-08-271,736$216,115None
Advisors Asset Management, Inc.2023-03-312026-08-271,084$96,238None
Advisors Asset Management, Inc.2021-06-302026-08-27622$27,000None
Advisors Asset Management, Inc.2023-12-312026-08-271,550$258,757None
Giverny Capital Inc.2026-06-302026-08-2791,464$8,184,199None
Advus Financial Partners, LLC2025-09-302026-08-261,956$237,165None
Advus Financial Partners, LLC2025-06-302026-08-261,979$230,930None
Advus Financial Partners, LLC2025-03-312026-08-262,035$254,253None
Advus Financial Partners, LLC2024-12-312026-08-262,050$293,007None
Advus Financial Partners, LLC2024-09-302026-08-262,065$400,321None
Advus Financial Partners, LLC2024-06-302026-08-262,107$291,630None
Advus Financial Partners, LLC2024-03-312026-08-262,132$444,629None
Advus Financial Partners, LLC2023-12-312026-08-262,223$371,108None
Advus Financial Partners, LLC2023-09-302026-08-262,167$269,770None
Advus Financial Partners, LLC2023-06-302026-08-262,325$316,200None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-267,200$644,256None
Advisors Asset Management, Inc.2025-06-302026-08-25147$17,153None
CYBER HORNET ETFs LLC2026-06-302026-08-25296$26,486None
First Eagle Investment Management, LLC2026-06-302026-08-25117$10,469None
First Eagle Investment Management, LLC2026-06-302026-08-2550$4,474None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25124,920$11,177,842None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2511,177,842$124,920,000None
Advisors Asset Management, Inc.2024-09-302026-08-222,223$430,951None
Advisors Asset Management, Inc.2024-06-302026-08-222,427$335,921None
Advisors Asset Management, Inc.2024-12-312026-08-221,961$280,286None
Assenagon Asset Management S.A.2026-06-302026-08-2296,157$8,604,128None
Rehmann Capital Advisory Group2026-06-302026-08-2111,884$1,063,380None
GILL CAPITAL PARTNERS, LLC2026-06-302026-08-2120$1,790None
Bullock Wealth Management Group2026-06-302026-08-20158$13,394None
Kingsview Wealth Management, LLC2026-06-302026-08-203,826$342,350None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2028,910$2,586,887None
Ensign Peak Advisors, Inc2026-03-312026-08-1915,762$1,297,685None
Ensign Peak Advisors, Inc2025-12-312026-08-1946,305$4,764,321None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗Corient Private Wealth LP ↗Redwood Investment Management, LLC ↗Redwood Investment Management, LLC ↗

Recent Congressional disclosures

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Ro Khanna2026-10-082026-09-25sale$1,001 $15,000
Ro Khanna2026-10-082026-09-04sale$1,001 - $15,000
Ro Khanna2026-10-082026-09-11purchase$1,001 - $15,000

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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