Boost Run CFO receives 2.89M-unit stock grant

The award’s vesting schedule extends through June 15, 2029, and each vesting tranche is subject to continued service.

Rhea-AI Filing Summary

Boost Run Inc. (BRUN) Chief Financial Officer Erik Guckel was granted 2,890,000 restricted stock units on September 29, 2026. Each unit represents a contingent right to receive one common share. 40% will vest on May 15, 2027; the remaining 60% will vest in eight substantially equal installments through June 15, 2029, in each case subject to continued service.

Insider Trade Summary

Grant/Award: 2,890,000 shares

Grant/Award 1 txn

Insider Guckel Erik

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units F1, F2	2,890,000	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 2,890,000 contracts (Direct)

Footnotes (2)

1. F1. Each restricted stock unit represents a contingent right to receive one share of common stock of Boost Run Inc.
2. F2. On September 29, 2026, the reporting person was granted 2,890,000 restricted stock units, of which 40% will vest on May 15, 2027. The remaining 60% will vest in eight substantially equal installments on each of September 15, 2027, December 15, 2027, March 15, 2028, June 15, 2028, September 15, 2028, December 15, 2028, March 15, 2029, and June 15, 2029, in each case, subject to continued service.

Key Figures

Restricted stock units granted: 2,890,000 restricted stock units Common shares per restricted stock unit: 1 common share First vesting tranche: 40% +2 more

5 metrics

Restricted stock units granted 2,890,000 restricted stock units Granted September 29, 2026

Common shares per restricted stock unit 1 common share Each unit represents a contingent right to receive one share

First vesting tranche 40% Vests May 15, 2027, subject to continued service

Remaining vesting portion 60% Vests in eight substantially equal installments, subject to continued service

Installments 8 installments Scheduled from September 15, 2027 through June 15, 2029

Key Terms

restricted stock units, contingent right, vest, substantially equal installments

4 terms

restricted stock units financial

"granted 2,890,000 restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"represents a contingent right to receive one share"

vest financial

"40% will vest on May 15, 2027"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

substantially equal installments financial

"in eight substantially equal installments"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RSUs did Boost Run (BRUN) CFO Erik Guckel receive?

Erik Guckel, Chief Financial Officer, was granted 2,890,000 restricted stock units on September 29, 2026. Each unit represents a contingent right to receive one share of Boost Run Inc. common stock.

When do Erik Guckel’s Boost Run (BRUN) RSUs vest?

40% will vest on May 15, 2027. The remaining 60% will vest in eight substantially equal installments on September 15, 2027, December 15, 2027, March 15, 2028, June 15, 2028, September 15, 2028, December 15, 2028, March 15, 2029, and June 15, 2029; each vesting is subject to continued service.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/01/2026 - 04:31 PM Accepted by SEC EDGAR 10/01/2026 - 04:30 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Guckel Erik

(Last) (First) (Middle)

C/O BOOST RUN INC.

5 REVERE DRIVE, SUITE 200

(Street)

NORTHBROOK ILLINOIS 60062

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Boost Run Inc. [ BRUN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/29/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	09/29/2026		A		2,890,000		(2)	(2)	Common Stock	2,890,000	$0	2,890,000	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of common stock of Boost Run Inc.

2. On September 29, 2026, the reporting person was granted 2,890,000 restricted stock units, of which 40% will vest on May 15, 2027. The remaining 60% will vest in eight substantially equal installments on each of September 15, 2027, December 15, 2027, March 15, 2028, June 15, 2028, September 15, 2028, December 15, 2028, March 15, 2029, and June 15, 2029, in each case, subject to continued service.

	/s/ Erik Guckel	10/01/2026
	** Signature of Reporting Person	Date
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 4 (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 4: SEC 1474 (03-26)