STOCK TITAN

Boost Run Inc. (BRUN) director reports multi-million share and warrant stake

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Boost Run Inc. director and ten percent owner Weil B. Luke reported his initial holdings in a Form 3. The filing shows that securities are held indirectly through Willow Lane Sponsor, LLC, which is the record holder. Mr. Weil is the sole managing member of the Sponsor and has voting and investment discretion over these holdings, while disclaiming beneficial ownership beyond any pecuniary interest.

The Sponsor holds 4,628,674 shares of Class A common stock and 4,007,222 warrants, each warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share until May 8, 2031, subject to a 9.8% ownership blocker. This Form 3 reflects existing positions rather than new purchases or sales.

Positive

  • None.

Negative

  • None.
Insider Weil B. Luke
Role null
Type Security Shares Price Value
holding Warrants -- -- --
holding Class A Common Stock, par value $0.0001 per share -- -- --
Holdings After Transaction: Warrants — 4,007,222 shares (Indirect, By Willow Lane Sponsor, LLC); Class A Common Stock, par value $0.0001 per share — 4,628,674 shares (Indirect, By Willow Lane Sponsor, LLC)
Footnotes (1)
  1. Willow Lane Sponsor, LLC (the "Sponsor"), is the record holder of such securities. Mr. Weil is the sole managing member of the Sponsor and holds voting and investment discretion with respect to the shares of Class A Common Stock held of record by the Sponsor. Mr. Weil disclaims any beneficial ownership of the securities held by Willow Lane's Sponsor other than to the extent of any pecuniary interest he may have therein, directly or indirectly. The Sponsor is attributed beneficial ownership over the 1,272,885 shares of Class A Common Stock and 1,101,986 Warrants which may be transferred pursuant to the Amended and Restated Transfer Agreement, dated as of April 24, 2026, between the Sponsor and Goodrich ILMJS LLC. Exercise is subject to a 9.8% blocker
Class A common stock held 4,628,674 shares Indirectly held by Willow Lane Sponsor, LLC as reported on Form 3
Warrants held 4,007,222 warrants Indirectly held by Willow Lane Sponsor, LLC; underlying Class A shares
Warrant exercise price $11.50 per share Exercise price for warrants into Class A common stock
Warrant expiration May 8, 2031 Expiration date of Boost Run warrants reported as held
Ownership blocker 9.8% Blocker limiting exercises that would exceed 9.8% ownership
Underlying shares for warrants 4,007,222 shares Class A common stock underlying the reported warrants
beneficial ownership financial
"Mr. Weil disclaims any beneficial ownership of the securities held by Willow Lane's Sponsor other than to the extent of any pecuniary interest he may have therein"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"disclaims any beneficial ownership of the securities held by Willow Lane's Sponsor other than to the extent of any pecuniary interest he may have therein"
9.8% blocker financial
"Exercise is subject to a 9.8% blocker"
warrants financial
"The Sponsor is attributed beneficial ownership over the 1,272,885 shares of Class A Common Stock and 1,101,986 Warrants which may be transferred"
Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.
Amended and Restated Transfer Agreement financial
"which may be transferred pursuant to the Amended and Restated Transfer Agreement, dated as of April 24, 2026, between the Sponsor and Goodrich ILMJS LLC"
SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Weil B. Luke

(Last)(First)(Middle)
C/O BOOST RUN INC.
5 REVERE DRIVE, SUITE 200

(Street)
NORTHBROOK ILLINOIS 60062

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
05/08/2026
3. Issuer Name and Ticker or Trading Symbol
Boost Run Inc. [ BRUN ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class A Common Stock, par value $0.0001 per share4,628,674I(1)By Willow Lane Sponsor, LLC(1)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Warrants06/08/2026(2)05/08/2031Class A Common Stock, par value $0.0001 per share4,007,222$11.5I(1)By Willow Lane Sponsor, LLC(1)
Explanation of Responses:
1. Willow Lane Sponsor, LLC (the "Sponsor"), is the record holder of such securities. Mr. Weil is the sole managing member of the Sponsor and holds voting and investment discretion with respect to the shares of Class A Common Stock held of record by the Sponsor. Mr. Weil disclaims any beneficial ownership of the securities held by Willow Lane's Sponsor other than to the extent of any pecuniary interest he may have therein, directly or indirectly. The Sponsor is attributed beneficial ownership over the 1,272,885 shares of Class A Common Stock and 1,101,986 Warrants which may be transferred pursuant to the Amended and Restated Transfer Agreement, dated as of April 24, 2026, between the Sponsor and Goodrich ILMJS LLC.
2. Exercise is subject to a 9.8% blocker
/s/ B. Luke Weil05/18/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What insider position in Boost Run Inc. (BRUN) does Weil B. Luke report?

Weil B. Luke reports an indirect position through Willow Lane Sponsor, LLC. The Sponsor holds 4,628,674 shares of Class A common stock and 4,007,222 warrants, with Mr. Weil having voting and investment discretion but disclaiming beneficial ownership beyond his pecuniary interest.

How many Boost Run Inc. (BRUN) warrants are held and at what exercise price?

Willow Lane Sponsor, LLC holds 4,007,222 warrants of Boost Run Inc. Each warrant is exercisable into one share of Class A common stock at an exercise price of $11.50 per share, with an expiration date in May 2031 and subject to a 9.8% blocker.

What is the 9.8% blocker mentioned in the Boost Run Inc. (BRUN) Form 3?

The 9.8% blocker limits warrant exercises that would push ownership above 9.8%. This kind of provision prevents a holder from exceeding a specified ownership threshold when converting or exercising securities, effectively capping the voting and economic stake from these warrants.

Are the Boost Run Inc. (BRUN) securities held directly by Weil B. Luke?

No, the securities are held of record by Willow Lane Sponsor, LLC. Mr. Weil is the sole managing member with voting and investment discretion but disclaims beneficial ownership of securities held by the Sponsor except to the extent of any direct or indirect pecuniary interest.

Does the Boost Run Inc. (BRUN) Form 3 show recent insider buying or selling?

The Form 3 lists existing holdings rather than recent trades. It reports indirect ownership of Class A common stock and warrants through Willow Lane Sponsor, LLC, with transaction codes indicating holdings and no buy or sell transactions recorded in the summarized data.