SEC Form 4 · Updated Daily
KYNB
— KYNTRA BIO, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Astellas Pharma Inc. | Reporting Owner | 4,968,367 | 2014-11-19 | C |
| Neff Thomas B | Director · Officer | 2,356,578 | 2019-08-21 | M |
| RIGGS RORY B | Director | 395,750 | 2021-05-26 | A |
| Conterno Enrique A | Director · Officer | 374,722 | 2023-07-07 | S |
| Chung Christine | Officer | 295,325 | 2025-03-06 | A |
| Cotroneo Pat | Officer | 274,536 | 2021-09-07 | F |
| Yu K Peony | Officer | 192,292 | 2020-12-16 | S |
| Graham Juan | Officer | 165,929 | 2024-12-06 | F |
| Routti Jorma | Director | 161,540 | 2019-03-26 | M |
| STERN JULIAN N | Director | 161,068 | 2015-05-20 | M |
| Eisner Mark | Officer | 159,917 | 2023-09-06 | F |
| Kouchakji Elias | Officer | 147,346 | 2021-03-08 | F |
| VALONE FRANK H MD | Officer | 115,434 | 2016-04-01 | M |
| Rosenkranz Roberto Pedro | Director | 96,100 | 2020-06-09 | M |
| MADERO MIGUEL | Director | 96,000 | 2015-12-08 | M |
| Adib Deyaa | Officer | 82,123 | 2024-06-12 | P |
| Tamura Toshinari | Director | 56,400 | 2019-06-05 | A |
| EDWARDS JEFFREY L | Director | 41,866 | 2023-06-07 | A |
| Ho Maykin | Director | 40,021 | 2023-06-07 | A |
| KEARNS THOMAS F JR | Director | 39,764 | 2021-09-15 | S |
| Schoeneck James A | Director | 39,666 | 2025-06-30 | P |
| Blaug Suzanne | Director | 38,114 | 2023-06-07 | A |
| Kurkijarvi Kalevi | Director | 37,800 | 2021-05-26 | A |
| Cravatt Benjamin | Director | 32,680 | 2023-06-07 | A |
| Brennan Aoife | Director · Officer | 32,680 | 2023-06-07 | A |
| Henderson Jeffrey William | Director | 28,866 | 2023-09-01 | S |
| Lema Gerald | Director | 28,766 | 2023-06-07 | A |
| Wettig Thane | Director · Officer | 26,796 | 2026-09-06 | F |
| DeLucia David | Officer | 4,355 | 2026-09-06 | F |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-01 | Singer Andrew E. | Grant / award (derivative) | 14,000 | $0.00 | 14,000 |
| 2026-09-06 | DeLucia David | Tax withholding | 22 | $8.55 | 4,355 |
| 2026-09-06 | Wettig Thane | Tax withholding | 209 | $8.55 | 26,796 |
| 2026-06-12 | Schoeneck James A | Grant / award (derivative) | 7,000 | $0.00 | 7,000 |
| 2026-06-12 | Kauffman Michael | Grant / award (derivative) | 7,000 | $0.00 | 7,000 |
| 2026-06-12 | EDWARDS JEFFREY L | Grant / award (derivative) | 7,000 | $0.00 | 7,000 |
| 2026-06-12 | Ho Maykin | Grant / award (derivative) | 7,000 | $0.00 | 7,000 |
| 2026-06-06 | DeLucia David | Tax withholding | 52 | $6.71 | 4,377 |
| 2026-06-06 | Wettig Thane | Tax withholding | 198 | $6.71 | 27,005 |
| 2026-05-14 | Wettig Thane | Open-market buy | 2,800 | $7.09 | 27,203 |
| 2026-05-14 | Wettig Thane | Open-market buy | 2,800 | $7.09 | 27,203 |
| 2026-03-06 | DeLucia David | Tax withholding | 60 | $6.84 | 4,429 |
| 2026-03-06 | Wettig Thane | Tax withholding | 277 | $6.84 | 24,403 |
| 2026-02-03 | DeLucia David | Grant / award (derivative) | 26,000 | $0.00 | 26,000 |
| 2026-02-03 | Wettig Thane | Grant / award (derivative) | 60,000 | $0.00 | 60,000 |
| 2025-12-06 | Wettig Thane | Tax withholding | 259 | $8.42 | 24,680 |
| 2025-12-06 | DeLucia David | Tax withholding | 52 | $8.42 | 4,489 |
| 2025-11-17 | Wettig Thane | Open-market buy | 2,700 | $9.10 | 24,939 |
| 2025-11-13 | Wettig Thane | Open-market buy | 1,000 | $9.18 | 22,239 |
| 2025-09-06 | Wettig Thane | Tax withholding | 248 | $12.10 | 21,239 |
| 2025-09-06 | DeLucia David | Tax withholding | 53 | $12.10 | 4,541 |
| 2025-06-30 | Schoeneck James A | Open-market buy | 23,567 | $5.07 | 39,666 |
| 2025-06-06 | Wettig Thane | Tax withholding | 246 | $7.83 | 21,487 |
| 2025-06-06 | DeLucia David | Tax withholding | 51 | $7.83 | 4,594 |
| 2025-06-04 | Kauffman Michael | Grant / award (derivative) | 120,000 | $0.00 | 120,000 |
| 2025-06-04 | Kauffman Michael | Grant / award (derivative) | 70,000 | $0.00 | 70,000 |
| 2025-06-04 | Schoeneck James A | Grant / award (derivative) | 120,000 | $0.00 | 120,000 |
| 2025-06-04 | EDWARDS JEFFREY L | Grant / award (derivative) | 120,000 | $0.00 | 120,000 |
| 2025-06-04 | Ho Maykin | Grant / award (derivative) | 120,000 | $0.00 | 120,000 |
| 2025-03-24 | Wettig Thane | Open-market buy | 145,000 | $0.35 | 543,329 |
| 2025-03-21 | Schoeneck James A | Open-market buy | 50,000 | $0.34 | 373,722 |
| 2025-03-20 | Schoeneck James A | Open-market buy | 250,000 | $0.35 | 323,722 |
| 2025-03-06 | DeLucia David | Tax withholding | 2,325 | $0.39 | 116,137 |
| 2025-03-06 | Chung Christine | Tax withholding | 422 | $0.39 | 294,903 |
| 2025-03-06 | Chung Christine | Grant / award | 781 | $0.00 | 295,325 |
| 2025-03-06 | Chung Christine | Tax withholding | 7,008 | $0.39 | 294,544 |
| 2025-03-06 | Wettig Thane | Tax withholding | 367 | $0.39 | 398,329 |
| 2025-03-06 | Wettig Thane | Grant / award | 781 | $0.00 | 398,696 |
| 2025-03-06 | Wettig Thane | Tax withholding | 22,038 | $0.39 | 397,915 |
| 2025-01-09 | Wettig Thane | Grant / award (derivative) | 1,300,000 | $0.00 | 1,300,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.