Boost Run Inc. (BRUN)

Nasdaq: BRUN · Services-Computer Processing & Data Preparation · Northbrook, IL · filing with the SEC since 2025

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Grade5.0

◀ Past 4.1● Present 5.6▶ Future 4.8

8 est.

Overview Business Financials Grade Forecast Sentiment Ownership People Filings Patents Chart

Who owns Boost Run Inc.

As filed with the SEC

Holders of 5% or more

Andrew Karos holds 48.1% of Class A Common Stock, par value $0.0001 per share, as its SCHEDULE 13D filed May 15, 2026 says.

Directors and officers

report now, of 8 people on the record since 2026. Their holdings as a group are not read here.

Institutions as a whole

n/a

The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 8 named at left.

Holders of 5% or moreshare of the class, as filed

Andrew Karos

SCHEDULE 13D · filed May 15, 2026 · Class A Common Stock, par value $0.0001 per share

48.1%

Harilaos Georgakopoulos

SCHEDULE 13D · filed May 15, 2026 · Class A Common Stock, par value $0.0001 per share

25.1%

B. Luke Weil

SCHEDULE 13D · filed Jun 15, 2026 · Class A Common Stock, par value $0.0001 per share · 9.97% in May 15, 2026

12.3%

TOMS Capital Investment Management LP

SCHEDULE 13G · filed Aug 14, 2026 · Class A Common Stock, par value $0.0001 per share

9.8%

Sean Goodrich

SCHEDULE 13D/A · filed Sep 16, 2026 · Class A Common Stock, par value $0.0001 per share · 10.3% in Aug 28, 2026

8.88%

Goodrich ILMJS LLC

SCHEDULE 13D · filed May 18, 2026 · Class A Common Stock, par value $0.0001 per share

6.48%

Fmr LLC

SCHEDULE 13G · filed Aug 6, 2026 · CLASS A COMMON STOCK

5.6%

Kenneth Griffin

SCHEDULE 13G · filed May 21, 2026 · Class A Common Stock, par value $0.0001 per share (the "Shares")

5.5%

What BRUN reports owning in othersstakes of 5% or more, and other ties

Boost Run Inc. reports no stake in another company in the record.

Insider tradesForm 4

2sales

0purchases

0sales on a scheduled plan

1people selling

$11.0Msold, in dollars

$0bought, in dollars

Open-market trades on Form 4 from Oct 1, 2025 to Oct 1, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.

By calendar yearSoldBought

2026 runs to Oct 1, 2026. Dollars as filed, summed by the transaction date.

People who traded in the window1 of 9 on the roster

Person	Role as filed	Sales	Sold	On a plan	Buys	Bought
Goodrich Sean	director	2	$11.0M	0	0	$0

SI Assistanton BRUN · research, not advice