Westchester Capital Management, LLC
Position in CERO — Cero Therapeutics Holdings, Inc.
CIK 1512805
VALHALLA, NY
Position in CERO
as of Sep 30, 2025
· filed Nov 14, 2025
Position Value
$0
+$0 QoQ
Shares Held
74,998
0.0% QoQ
Ownership
0.105%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2022
14 quarters on record
Voting authority
Sole 8%
Shared 92%
None 0%
Common Shares in CERO Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Westchester Capital Management, LLC holds $11,544,317 across 4 Biotechnology names.
All Filings in CERO
Export CSV
15 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2025-09-30 CEROW | — | 74,998 | Shares | Other | 2025-11-14 | |
| 2025-06-30 CEROW | — | 74,998 | Shares | Other | 2025-08-14 | |
| 2025-03-31 CEROW | — | 74,998 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 CEROW | — | 74,998 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 CEROW | — | 74,998 | Shares | Other | 2024-11-14 | |
| 2024-06-30 CEROW | — | 74,998 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 CEROW | — | 74,998 | Shares | Other | 2024-05-15 | |
| 2023-12-31 CEROW | — | 74,998 | Shares | Other | 2024-02-15 | |
| 2023-09-30 CEROW | — | 74,998 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 CEROW | — | 74,998 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 CEROW | — | 74,998 | Shares | Other | 2023-05-15 | |
| 2022-12-31 CEROW | — | 74,998 | Shares | Sole | 2023-02-14 | |
| 2022-12-31 | — | 611,264 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $4,654,193 | 461,268 | Shares | Other | 2022-11-17 | |
| 2022-06-30 | $4,621,904 | 461,268 | Shares | Other | 2022-08-15 | |
| No filing history on record for this holder in this stock. | ||||||