Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Share classes (cover page of the 10-Q filed 2026-08-06, as of 2026-08-03)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | BKSY · NYSE | 40,924,846 | 30,106,736 | 73.6% | 227 | 09263B207 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (1 of 1 · 09263BAA6)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | K2 PRINCIPAL FUND, L.P. | 7,507 | — | $9.7M | — |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| Mithril II LP | SCHEDULE 13D/A | 2026-08-20 | 2026-06-05 | 0 | 0% |
| Mithril LP | SCHEDULE 13D/A | 2026-08-20 | 2026-06-05 | 0 | 0% |
| Bank of New York Mellon Corp | SCHEDULE 13G/A | 2026-07-29 | 2026-06-30 | 657,613 | 1.8% |
| BNY Mellon IHC, LLC | SCHEDULE 13G/A | 2026-07-29 | 2026-06-30 | 599,728 | 1.6% |
| MBC Investments Corp | SCHEDULE 13G/A | 2026-07-29 | 2026-06-30 | 599,728 | 1.6% |
| Newton Investment Management North America, LLC | SCHEDULE 13G/A | 2026-04-28 | 2026-03-31 | 1,827,603 | 4.9% |
| The Vanguard Group | SCHEDULE 13G/A | 2026-03-26 | 2026-03-13 | 0 | 0% |
| AWM Investment Company, Inc. | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 1,725,610 | 4.8% |
| BlackRock, Inc. | SCHEDULE 13G/A | 2025-10-17 | 2025-09-30 | 2,287,439 | 6.5% |
| Mithril II GP LP | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 1,030,175 | 2.9% |
| Mithril II UGP LLC | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 1,030,175 | 2.9% |
| Ajay Royan | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 2,328,503 | 6.6% |
| Mithril GP LP | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 1,298,328 | 3.7% |
| Peter Thiel | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 2,328,503 | 6.6% |
| Nantahala Capital Management, LLC | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,377,060 | 4.47% |
| Daniel Mack | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,377,060 | 4.47% |
| Wilmot B. Harkey | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,377,060 | 4.47% |
| Walleye Capital LLC | SCHEDULE 13G/A | 2025-01-24 | 2024-09-30 | 230,572.5 | 0.8% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.