13D·WATCH Activist + Insider Intelligence Live feed Blog About Pilot
SCHEDULE 13G Filed 2026-05-21 Event — SEC 0001104659-26-065253 →

CITADEL ADVISORS LLC Boost Run Inc. BRUNW

Stake: Shares: 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
6 13D/G filings on this issuer
5 other filings besides this one
Filer Track Record
1 filings by this filer
0 other filings in the data moat
Short Interest
Not in latest FINRA snapshot

Other 13D/G Filings on Boost Run Inc.

FiledFormFilerStakeShares
2026-05-18 SCHEDULE 13D Goodrich ILMJS LLC 6.48% 2,065,385 view →
2026-05-15 SCHEDULE 13D Karos Andrew 48.08% 29,533,018 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 Goodrich Sean 6.48% 2,065,385 view →

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

Full feed access · API · daily intelligence brief · custom alerts. $1,500/mo. Pilots welcome.

Request a pilot →