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WD 40 Co

WDFC
Exchange
Nasdaq
Industry
Miscellaneous Chemical Products
SEC CIK
0000105132

No open-market purchases or sales by WD 40 Co insiders were filed in the last 90 days; 390 institutions reported holding it in 13F filings for Q2 2026, worth $2.85B in total; no superinvestor holds it.

Holders of 5% or more of WDFC

Holders whose latest Schedule 13D or 13G filing reports 5% or more of WD 40 Co, largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of WDFC
HolderLatest formStakeChangeFirst filedLatest filingFiling
BlackRock, Inc.13G/A14.30%1.93M shares–Oct 17, 20251 filingOct 17, 2025SEC
Vanguard Portfolio Management LLC13G7.78%1.05M sharesNewApr 29, 20261 filingApr 29, 2026SEC
Vanguard Capital Management LLC13G5.26%709.5K sharesNewApr 30, 20261 filingApr 30, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

24 Schedule 13D and 13G filings on WD 40 Co, newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on WDFC
Filed (ET)FilerFormStakeChangeEvent dateFiling
Apr 30, 20262:31 PM ETVanguard Capital Management LLC13G5.26%709.5K sharesNewMar 31, 2026SEC
Apr 29, 20263:53 PM ETVanguard Portfolio Management LLC13G7.78%1.05M sharesNewMar 31, 2026SEC
Mar 27, 20262:16 PM ETVanguard Group Inc13G/A0.00%0 shares–Below 5%Mar 13, 2026SEC
Oct 17, 20256:41 PM ETBlackRock, Inc.13G/A14.30%1.93M shares–Sep 30, 2025SEC
May 14, 20254:35 PM ETAPG Asset Management US Inc.and 3 others13G/A2.40%324.0K shares−5.10 ppfrom 7.50%Below 5%Mar 31, 2025SEC
Feb 13, 20254:14 PM ETAPG Asset Management US Inc.and 3 others13G/A7.50%1.02M shares–Jan 31, 2025SEC
Feb 13, 2024Vanguard Group Inc13G/AOld format–––SEC
Feb 12, 2024Neuberger Berman Group LLC13G/AOld format–––SEC
Feb 7, 2024APG Asset Management US Inc.13G/AOld format–––SEC
Jan 22, 20243:52 PM ETBlackRock Inc.13G/AOld format–––SEC
Feb 10, 2023Neuberger Berman Group LLC13G/AOld format–––SEC
Feb 9, 2023Vanguard Group Inc13G/AOld format–––SEC
Feb 7, 20232:10 PM ETBlackRock Inc.13G/AOld format–––SEC
Jan 12, 2023APG Asset Management US Inc.13G/AOld format–––SEC
Feb 11, 2022Neuberger Berman Group LLC13G/AOld format–––SEC
Feb 10, 2022Vanguard Group Inc13G/AOld format–––SEC
Jan 26, 20228:18 PM ETBlackRock Inc.13G/AOld format–––SEC
Jan 25, 202211:15 AM ETBlackRock Inc.13GOld format–––SEC
Jan 19, 2022APG Asset Management US Inc.13G/AOld format–––SEC
Mar 3, 2021APG Asset Management US Inc.13G/AOld format–––SEC
Feb 11, 2021Neuberger Berman Group LLC13G/AOld format–––SEC
Feb 10, 2021Vanguard Group Inc13G/AOld format–––SEC
Jan 26, 20212:22 PM ETBlackRock Inc.13G/AOld format–––SEC
Jan 19, 2021APG Asset Management US Inc.13G/AOld format–––SEC

Form 144: proposed insider sales

4 notices from officers, directors and other affiliates planning to sell WD 40 Co shares, newest first.

Form 144 notices for WDFC
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Aug 7, 20261:35 PM ETOlsem Patricia QOfficer600$136.4KAug 7, 2026FIDELITY BROKERAGE SERVICES LLCSEC
Nov 13, 20244:05 PM ETWilliam NobleOfficer1.00K$289.7KNov 13, 2024Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Oct 22, 20244:16 PM ETWilliam NobleOfficer800$205.6KOct 22, 2024Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 14, 20233:44 PM ETOlsem Patricia QOfficer420$84.0KJun 14, 202310b5-1Fidelity Brokerage Services LLCSEC