Lunai Bioworks's three largest insider shareholders as of September 29, 2026 are Karen Brink (Director, 2.54Mn shares), Rene Sindlev (Director, 1.36Mn shares), Serhat Gumrukcu (TenPercentOwner, 1.23Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Karen Brink | Director, TenPercentOwner | 0 | 2,537,297 | 2,537,297 | 43.4% | 16 Aug, 2024 |
| 2 | Rene Sindlev | Director, TenPercentOwner | 0 | 1,360,530 | 1,360,530 | 23.3% | 22 Feb, 2024 |
| 3 | Serhat Gumrukcu | TenPercentOwner | 1,227,306 | 0 | 1,227,306 | 21.0% | 20 May, 2022 |
| 4 | Anderson Wittekind William | TenPercentOwner | 335,388 | 0 | 335,388 | 5.7% | 12 Mar, 2025 |
| 5 | Carl Forest Sandler | Director, TenPercentOwner | 318,749 | 0 | 318,749 | 5.5% | 24 Mar, 2022 |
| 6 | David Hershel Weinstein | Chief Executive Officer | 25,000 | 0 | 25,000 | 0.4% | 29 Oct, 2024 |
| 7 | Tilburg Maurice Van | Director | 25,000 | 0 | 25,000 | 0.4% | 25 Feb, 2025 |
| 8 | Avram Miller | Director | 16,667 | 0 | 16,667 | 0.3% | 27 Aug, 2024 |
| 9 | Luisa Puche | Chief Financial Officer | 1,627 | 0 | 1,627 | 0.0% | 11 Jan, 2022 |
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 |
|---|---|---|---|---|---|---|---|---|
| 10 Mar, 2025 | Anderson Wittekind William | TenPercentOwner | Disposed J | 350,000 | — | — | 335,388 | Direct |
| 21 Jan, 2025 | Tilburg Maurice Van | Director | Acquired A | 250,000 | $0.00 | $0 | 25,000 | Direct |
| 21 Jan, 2025 | Nathen Fuentes | Chief Financial Officer | Acquired A | 250,000 | $0.00 | $0 | 25,000 | Direct |
| 21 Jan, 2025 | Tilburg Maurice Van | Director | Acquired A | 1,000,000 | $0.00 | $0 | 100,000 | Direct |
| 04 Nov, 2024 | Mark Anthony Collins | Director | Acquired A | 120,968 | $0.00 | $0 | 12,097 | Direct |
| 04 Nov, 2024 | Douglas W Calder | Director | Acquired A | 120,968 | $0.00 | $0 | 12,097 | Direct |
| 04 Nov, 2024 | James A Mcnulty | Director | Acquired A | 120,968 | $0.00 | $0 | 12,097 | Direct |
| 04 Nov, 2024 | Simon Tarsh | Interim Cfo | Acquired A | 58,500 | $0.00 | $0 | 5,850 | Direct |
| 14 Oct, 2024 | David Hershel Weinstein | Chief Executive Officer | Acquired A | 250,000 | $0.00 | $0 | 25,000 | Direct |
| 14 Oct, 2024 | David Hershel Weinstein | Chief Executive Officer | Acquired A | 1,600,000 | $0.00 | $0 | 160,000 | Direct |
| 23 Aug, 2024 | Avram Miller | Director | Disposed D | 833,333 | $0.00 | $0 | 16,667 | Direct |
| 23 Aug, 2024 | Avram Miller | Director | Acquired A | 978,261 | $0.00 | $0 | 97,826 | Direct |
| 12 Aug, 2024 | Karen Brink | Director, TenPercentOwner | Acquired J | 2,000,000 | — | — | 2,537,297 | Indirect |
| 12 Aug, 2024 | Karen Brink | Director, TenPercentOwner | Disposed J | 2,000,000 | — | — | 2,337,297 | Indirect |
| 17 Jul, 2024 | Anderson Wittekind William | TenPercentOwner | Disposed S | 16,362 | $14.60 | $238.89K | 84,143 | Indirect |
| 15 Jul, 2024 | Anderson Wittekind William | TenPercentOwner | Disposed S | 21,954 | $14.10 | $309.55K | 87,580 | Indirect |
| 09 Jul, 2024 | Anderson Wittekind William | TenPercentOwner | Disposed S | 4,630 | $15.30 | $70.84K | 96,965 | Indirect |
| 10 Jul, 2024 | Anderson Wittekind William | TenPercentOwner | Disposed S | 75,000 | $15.10 | $1.13Mn | 89,465 | Indirect |
| 11 Jul, 2024 | Anderson Wittekind William | TenPercentOwner | Disposed S | 14,896 | $15.10 | $224.93K | 89,775 | Indirect |
| 03 Jul, 2024 | Anderson Wittekind William | TenPercentOwner | Disposed S | 50,000 | $15.10 | $755.00K | 103,428 | Indirect |