SCHEDULE 13G Filed 2026-05-21 Event — SEC 0001104659-26-065253 →

CITADEL ADVISORS LLC → Boost Run Inc. BRUNW

Stake: — Shares: — CUSIP: 09940T100 Class: Class A Common Stock, par value $0.0001 per share (the "Shares")

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

8 filings by this filer

7 other filings in the data moat

Short Interest · settle 2026-08-14

DTC 1.00

83,751 shares short · +119.5% vs prior

Other 13D/G Filings on Boost Run Inc.

Filed	Form	Filer	Stake	Shares
2026-09-16	SCHEDULE 13D/A	Goodrich Sean	—	4,437,921	view →
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 →
2026-05-18	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 CITADEL ADVISORS LLC

Filed	Form	Issuer	Stake	Shares
2026-10-06	SCHEDULE 13G	Eco Wave Power Global AB (publ)	—	—	view →
2026-10-06	SCHEDULE 13G	Quantinuum Inc.	—	—	view →
2026-10-06	SCHEDULE 13G	REALLOYS INC.	—	—	view →
2026-10-06	SCHEDULE 13G	STARFIGHTERS SPACE, INC.	—	—	view →
2026-05-29	SCHEDULE 13G	GMR Solutions Inc. GMRS	—	—	view →
2026-05-27	SCHEDULE 13G	LIFEWAY FOODS, INC. LWAY	—	—	view →
2026-05-26	SCHEDULE 13G	DUKE Robotics Corp. DUKRW	—	—	view →

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