SCHEDULE 13D/A Filed 2026-09-16 Event 2026-09-14 SEC 0001493152-26-042923 →

Goodrich Sean → Boost Run Inc. BRUN

Stake: — Shares: 4,437,921 Class: Class A Common Stock, par value $0.0001 per share

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 29/100

Active Schedule 13D filer baseline
Material 8-K governance/transaction event (Item 5.02 / 1.01 / 2.01) within ±30d
Short interest building (+37.7% vs prior settlement)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

10 13D/G filings on this issuer

9 other filings besides this one

Filer Track Record

4 filings by this filer

3 other filings in the data moat

Short Interest · settle 2026-10-15

DTC 1.81

6,856,265 shares short · +37.7% vs prior

Other 13D/G Filings on Boost Run Inc.

Filed	Form	Filer	Stake	Shares
2026-08-28	SCHEDULE 13D/A	Goodrich Sean	10.28%	5,136,121	view →
2026-06-15	SCHEDULE 13D	Weil B. Luke	12.25%	3,906,023	view →
2026-06-15	SCHEDULE 13D	Goodrich Sean	12.65%	4,034,135	view →
2026-05-21	SCHEDULE 13G	CITADEL ADVISORS LLC	—	—	view →
2026-05-18	SCHEDULE 13D	Goodrich ILMJS LLC	6.48%	2,065,385	view →
2026-05-15	SCHEDULE 13D	Goodrich Sean	6.48%	2,065,385	view →
2026-05-15	SCHEDULE 13D	Georgakopoulos Harilaos	25.13%	8,016,095	view →
2026-05-15	SCHEDULE 13D	Weil B. Luke	9.97%	3,288,511	view →
2026-05-15	SCHEDULE 13D	Karos Andrew	48.08%	29,533,018	view →

Other Filings by Goodrich Sean

Filed	Form	Issuer	Stake	Shares
2026-08-28	SCHEDULE 13D/A	Boost Run Inc.	10.28%	5,136,121	view →
2026-06-15	SCHEDULE 13D	BOOST RUN INC. BRUNW	12.65%	4,034,135	view →
2026-05-15	SCHEDULE 13D	BOOST RUN INC. BRUNW	6.48%	2,065,385	view →

Want this depth on every filing the moment it hits SEC EDGAR?

Free $0 (48h-delayed alerts) · Individual $49/mo (real-time) · Team & API $199/mo · Enterprise.

See pricing →