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Blackwater Investments, Inc.

Disclosed activity across 1 company

Tapewire entity
75091
SEC CIK
0001717208

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
U-Haul Holding Co /NV/UHALB · Entity 340910% ownerSeptember 18, 2025September 22, 2025

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

U-Haul Holding Co /NV/

Report date September 18, 2025 · Filed September 22, 2025

Jointly reported with Willow Grove Holdings LP, Foster Road LLC, Clarendon Strategies, LLC, SAC HOLDING CORP

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Series N Common StockSEC Table I · non-derivativeIndirectBlackwater Investments, Inc.8,150,658 Reported balance After 2025-09-18 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2025-09-18 · Purchase · Acquired 229,515 · Balance 8,150,658

F1: This Form 4 is being filed in connection with a sale by the MVS-029 Trust of 229,515 shares of Series N Common Stock to Blackwater Investments, Inc. ("Blackwater") in exchange for all of the outstanding equity interests in Holdfast Marine, LLC, which were valued for purposes of this transaction at approximately $11.8 million. Blackwater is a wholly owned subsidiary of the Reporting Person. Accordingly, the Reporting Person may be deemed to have indirect beneficial ownership of the Series N Common Stock held by Blackwater. The Reporting Person disclaims beneficial ownership of shares held directly and indirectly by Blackwater and its subsidiaries, including Clarendon Strategies, LLC ("Clarendon") and SAC Holding Corporation ("SAC"), except to the extent of its pecuniary interest therein.

F2: Willow Grove is owned and controlled by Foster Road LLC and various trusts associated with Edward J. Shoen and Mark V. Shoen. Foster Road LLC is the general partner of Willow Grove and is managed by Mark V. Shoen and Stuart Shoen. Blackwater is a wholly owned subsidiary of Willow Grove. Clarendon and SAC are wholly owned subsidiaries of Blackwater.

Series N Common StockSEC Table I · non-derivativeDirect67,253,456 Reported balance Holding disclosure · report date 2025-09-18 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 67,253,456

Common StockSEC Table I · non-derivativeIndirectSAC Holding Corporation24,900 Reported balance Holding disclosure · report date 2025-09-18 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 24,900

F2: Willow Grove is owned and controlled by Foster Road LLC and various trusts associated with Edward J. Shoen and Mark V. Shoen. Foster Road LLC is the general partner of Willow Grove and is managed by Mark V. Shoen and Stuart Shoen. Blackwater is a wholly owned subsidiary of Willow Grove. Clarendon and SAC are wholly owned subsidiaries of Blackwater.

Common StockSEC Table I · non-derivativeIndirectClarendon Strategies, LLC1,324,000 Reported balance Holding disclosure · report date 2025-09-18 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 1,324,000

F2: Willow Grove is owned and controlled by Foster Road LLC and various trusts associated with Edward J. Shoen and Mark V. Shoen. Foster Road LLC is the general partner of Willow Grove and is managed by Mark V. Shoen and Stuart Shoen. Blackwater is a wholly owned subsidiary of Willow Grove. Clarendon and SAC are wholly owned subsidiaries of Blackwater.

Common StockSEC Table I · non-derivativeIndirectBlackwater Investments, Inc.880,127 Reported balance Holding disclosure · report date 2025-09-18 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 880,127

F2: Willow Grove is owned and controlled by Foster Road LLC and various trusts associated with Edward J. Shoen and Mark V. Shoen. Foster Road LLC is the general partner of Willow Grove and is managed by Mark V. Shoen and Stuart Shoen. Blackwater is a wholly owned subsidiary of Willow Grove. Clarendon and SAC are wholly owned subsidiaries of Blackwater.

Common StockSEC Table I · non-derivativeDirect7,562,884 Reported balance Holding disclosure · report date 2025-09-18 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 7,562,884

Filing footnotes · ownership attribution and instrument terms

F1: This Form 4 is being filed in connection with a sale by the MVS-029 Trust of 229,515 shares of Series N Common Stock to Blackwater Investments, Inc. ("Blackwater") in exchange for all of the outstanding equity interests in Holdfast Marine, LLC, which were valued for purposes of this transaction at approximately $11.8 million. Blackwater is a wholly owned subsidiary of the Reporting Person. Accordingly, the Reporting Person may be deemed to have indirect beneficial ownership of the Series N Common Stock held by Blackwater. The Reporting Person disclaims beneficial ownership of shares held directly and indirectly by Blackwater and its subsidiaries, including Clarendon Strategies, LLC ("Clarendon") and SAC Holding Corporation ("SAC"), except to the extent of its pecuniary interest therein.

F2: Willow Grove is owned and controlled by Foster Road LLC and various trusts associated with Edward J. Shoen and Mark V. Shoen. Foster Road LLC is the general partner of Willow Grove and is managed by Mark V. Shoen and Stuart Shoen. Blackwater is a wholly owned subsidiary of Willow Grove. Clarendon and SAC are wholly owned subsidiaries of Blackwater.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 18, 2025 Filed Sep 22, 2025 20:07 UTC U-Haul Holding Co /NV/ UHALB · Entity 3409 PurchaseSeries N Common Stock 229,515 Not disclosed Not disclosed
Disclosure

SEC source: 0001193125-25-211287 · ownership.xml · nonDerivative · entry 1

Willow Grove Holdings LP · CIK 0001662239 · 10% owner

Foster Road LLC · CIK 0001662241 · 10% owner

Clarendon Strategies, LLC · CIK 0001954801 · 10% owner

Blackwater Investments, Inc. · CIK 0001717208 · 10% owner

SAC HOLDING CORP · CIK 0001282822 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Blackwater Investments, Inc.

Disclosed balance after: 8,150,658

F1 · price: This Form 4 is being filed in connection with a sale by the MVS-029 Trust of 229,515 shares of Series N Common Stock to Blackwater Investments, Inc. ("Blackwater") in exchange for all of the outstanding equity interests in Holdfast Marine, LLC, which were valued for purposes of this transaction at approximately $11.8 million. Blackwater is a wholly owned subsidiary of the Reporting Person. Accordingly, the Reporting Person may be deemed to have indirect beneficial ownership of the Series N Common Stock held by Blackwater. The Reporting Person disclaims beneficial ownership of shares held directly and indirectly by Blackwater and its subsidiaries, including Clarendon Strategies, LLC ("Clarendon") and SAC Holding Corporation ("SAC"), except to the extent of its pecuniary interest therein.

F2 · ownership.direct: Willow Grove is owned and controlled by Foster Road LLC and various trusts associated with Edward J. Shoen and Mark V. Shoen. Foster Road LLC is the general partner of Willow Grove and is managed by Mark V. Shoen and Stuart Shoen. Blackwater is a wholly owned subsidiary of Willow Grove. Clarendon and SAC are wholly owned subsidiaries of Blackwater.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.