As of September 12, 2026, the three largest insider holders of BLLN are Ventures I, L.P. Neotribe (TenPercentOwner, 3.06Mn shares), Krishna Kittu Kolluri (Director, 2.82Mn shares), Bird Ventures Management Nv Humming (TenPercentOwner, 2.58Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Bird Ventures Management Nv Humming | TenPercentOwner | 0 | 2,580,833 | 2,580,833 | 80.8% | 20 Jan, 2026 |
| 2 | Shan Riku Sakakibara | Chief Product Officer | 200,000 | 0 | 200,000 | 6.3% | 04 Aug, 2026 |
| 3 | Oguzhan Atay | Chairman And Ceo | 0 | 162,500 | 162,500 | 5.1% | 05 Aug, 2026 |
| 4 | Ventures I, L.P. Neotribe | TenPercentOwner | 87,362 | 0 | 87,362 | 2.7% | 11 Jun, 2026 |
| 5 | Krishna Kittu Kolluri | Director | 0 | 57,839 | 57,839 | 1.8% | 28 Aug, 2026 |
| 6 | Firat Ileri | Director, TenPercentOwner | 40,331 | 0 | 40,331 | 1.3% | 11 Jun, 2026 |
| 7 | Bosch John Roderick Ten | Svp Of Laboratory Operations | 25,051 | 0 | 25,051 | 0.8% | 11 Sep, 2026 |
| 8 | Akshay Rai | Director | 14,026 | 0 | 14,026 | 0.4% | 11 Jun, 2026 |
| 9 | Thomas S Bremner | Director | 11,350 | 0 | 11,350 | 0.4% | 12 Jun, 2026 |
| 10 | Anthony Pagano | Director | 7,913 | 0 | 7,913 | 0.2% | 11 Jun, 2026 |
| 11 | Nancy Joann Johnson | Officer | 6,900 | 0 | 6,900 | 0.2% | 20 Jul, 2026 |
| 12 | David Tsao | Chief Technology Officer | 1,000 | 0 | 1,000 | 0.0% | 11 Sep, 2026 |
| 13 | Thomas P. Lynch | Officer | 700 | 0 | 700 | 0.0% | 10 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 09 Sep, 2026 | Bosch John Roderick Ten | Svp Of Laboratory Operations | Disposed S | 1,416 | $97.54 | $138.12K | 25,051 | Direct |
| 09 Sep, 2026 | David Tsao | Chief Technology Officer | Acquired M | 10,000 | $2.80 | $28.00K | 11,000 | Direct |
| 09 Sep, 2026 | David Tsao | Chief Technology Officer | Acquired M | 10,000 | $2.80 | $28.00K | 21,000 | Direct |
| 09 Sep, 2026 | David Tsao | Chief Technology Officer | Disposed S | 10,000 | $97.54 | $975.40K | 11,000 | Direct |
| 09 Sep, 2026 | David Tsao | Chief Technology Officer | Disposed S | 10,000 | $100.00 | $1.00Mn | 1,000 | Direct |
| 09 Sep, 2026 | David Tsao | Chief Technology Officer | Disposed M | 10,000 | $2.80 | $28.00K | 570,000 | Direct |
| 09 Sep, 2026 | David Tsao | Chief Technology Officer | Disposed M | 10,000 | $2.80 | $28.00K | 560,000 | Direct |
| 08 Sep, 2026 | Oguzhan Atay | Chairman And Ceo | Acquired C | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Acquired M | 11,042 | $8.65 | $95.51K | 11,742 | Direct |
| 09 Sep, 2026 | Oguzhan Atay | Chairman And Ceo | Disposed G | 20,000 | $0.00 | $0 | 0 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Acquired M | 3,969 | $11.55 | $45.84K | 15,711 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Acquired M | 1,663 | $17.12 | $28.47K | 17,374 | Direct |
| 08 Sep, 2026 | Oguzhan Atay | Chairman And Ceo | Disposed C | 20,000 | $0.00 | $0 | 2,197,542 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Acquired M | 3,326 | $30.78 | $102.37K | 20,700 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Disposed S | 38 | $96.47 | $3.67K | 20,662 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Disposed S | 1,944 | $98.97 | $192.39K | 18,718 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Disposed S | 8,285 | $100.12 | $829.52K | 10,433 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Disposed S | 775 | $100.83 | $78.14K | 9,658 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Disposed S | 614 | $99.00 | $60.79K | 9,044 | Direct |
| 08 Sep, 2026 | Thomas P. Lynch | Officer | Disposed S | 2,997 | $100.11 | $300.04K | 6,047 | Direct |