Director B. Luke Weil and Willow Lane Sponsor Disclose Significant Post-SPAC Ownership in Boost Run Inc.
BRUN has more than doubled off its 52-week low of $9.995 on elevated volume (8.0× avg).
Summary
Director B. Luke Weil and Willow Lane Sponsor, LLC have disclosed substantial beneficial ownership stakes in Boost Run Inc. following the company's recent SPAC merger, providing clarity on key insider holdings.
Key Events · Ownership and Investor Activity · BRUN
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Director's Significant Stake
B. Luke Weil, a director of Boost Run Inc. and sole managing member of Willow Lane Sponsor, disclosed beneficial ownership of 3,288,511 shares, representing 9.97% of the Class A Common Stock.
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Sponsor's Ownership
Willow Lane Sponsor, LLC reported beneficial ownership of 2,374,879 shares, equating to 7.20% of the Class A Common Stock.
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Post-SPAC Merger Disclosure
These ownership stakes are a direct result of the Business Combination (SPAC merger) that closed on May 8, 2026, establishing the initial ownership structure of the newly public entity.
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Part of Initial Ownership Disclosures
This filing is part of a series of initial Schedule 13D disclosures following the SPAC merger, complementing reports from the CEO and COO regarding their significant ownership positions.
Analysis · BRUN · Technology
This Schedule 13D filing details the beneficial ownership stakes of Director B. Luke Weil and Willow Lane Sponsor, LLC following Boost Run Inc.'s recent SPAC merger. Mr. Weil, who is also the sole managing member of Willow Lane Sponsor, holds a significant 9.97% stake, while Willow Lane Sponsor holds 7.20%. These disclosures are crucial for understanding the initial ownership structure and insider alignment of the newly public company, especially when viewed alongside other recent 13D filings from the CEO and COO.
How filings like this one have moved
In the 30 days to Oct 5, 2026, 36.9% of the 964 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.65%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, BRUN was trading at $29.40 on NASDAQ in the Technology sector, with a market capitalization of approximately $511.4M. The 52-week trading range was $10.00 to $31.50. This filing was assessed with neutral market sentiment and an importance score of 8 out of 10.