As of March 23, 2026, the three largest insider holders of DYAI are Mark A Emalfarb (Ceo, 4.83Mn shares), Mark A Emalfarb (President And Ceo, 4.39Mn shares), Trust Under Agreement Dated February 28, 1996 Francisco (TenPercentOwner, 3.55Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Mark A Emalfarb | Ceo | 4,832,667 | 0 | 06 Jan, 2026 |
| Mark A Emalfarb | President And Ceo | 0 | 4,394,015 | 23 Dec, 2021 |
| Trust Under Agreement Dated February 28, 1996 Francisco | 3,548,528 | 0 | 16 Aug, 2021 | |
| Michael P. Tarnok | 281,033 | 0 | 24 Jun, 2025 | |
| Seth Herbst | 202,311 | 0 | 06 Jan, 2026 | |
| Joseph P Hazelton | President Coo | 191,758 | 0 | 06 Jan, 2026 |
| Ping Wang Rawson | Chief Financial Officer | 170,151 | 0 | 06 Jan, 2026 |
| Jack Kaye | 81,201 | 0 | 06 Jan, 2026 | |
| Patrick K. Lucy | 72,311 | 0 | 06 Jan, 2026 | |
| Arindam Bose | 61,535 | 0 | 24 Jun, 2025 | |
| Ronen Tchelet | Vp Of Research And Bus. Dvlpmt | 50,897 | 0 | 06 Jan, 2026 |
| Barry Buckland | 38,967 | 0 | 13 Jun, 2024 | |
| Ping Wang Rawson | Chief Financial Officer | 0 | 9,650 | 04 Jun, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Jan, 2026 | Jack Kaye | Common Stock | A | 21,552 | - | 81,201 | D | M |
| 02 Jan, 2026 | Patrick K. Lucy | Common Stock | A | 21,552 | - | 72,311 | D | M |
| 02 Jan, 2026 | Ronen Tchelet | Common Stock | A | 18,064 | $0.00 | 50,897 | D | A |
| 02 Jan, 2026 | Ping Wang Rawson | Common Stock | A | 29,158 | $0.00 | 170,151 | D | A |
| 02 Jan, 2026 | Joseph P Hazelton | Common Stock | A | 36,418 | $0.00 | 191,758 | D | A |
| 02 Jan, 2026 | Mark A Emalfarb | Common Stock | A | 102,609 | $0.00 | 4,832,667 | D | A |
| 02 Jan, 2026 | Seth Herbst | Common Stock | A | 21,552 | - | 202,311 | D | M |
| 02 Jan, 2026 | Seth Herbst | Restricted Stock Unit | D | 21,552 | $0.00 | 0 | D | M |
| 02 Jan, 2026 | Joseph P Hazelton | Stock Option | A | 67,250 | $0.00 | 67,250 | D | A |
| 02 Jan, 2026 | Jack Kaye | Restricted Stock Unit | D | 21,552 | $0.00 | 0 | D | M |
| 02 Jan, 2026 | Patrick K. Lucy | Restricted Stock Unit | D | 21,552 | $0.00 | 0 | D | M |
| 02 Jan, 2026 | Ronen Tchelet | Stock Option | A | 47,250 | $0.00 | 47,250 | D | A |
| 02 Jan, 2026 | Mark A Emalfarb | Stock Option | A | 126,000 | $0.00 | 126,000 | D | A |
| 02 Jan, 2026 | Ping Wang Rawson | Stock Option | A | 47,250 | $0.00 | 47,250 | D | A |
| 02 Jan, 2026 | Jack Kaye | Stock Option | A | 67,500 | $0.00 | 67,500 | D | A |
| 02 Jan, 2026 | Seth Herbst | Stock Option | A | 50,000 | $0.00 | 50,000 | D | A |
| 02 Jan, 2026 | Patrick K. Lucy | Stock Option | A | 67,500 | $0.00 | 67,500 | D | A |
| 02 Jan, 2026 | Seth Herbst | Restricted Stock Unit | A | 39,894 | $0.00 | 39,894 | D | A |
| 02 Jan, 2026 | Patrick K. Lucy | Restricted Stock Unit | A | 39,894 | $0.00 | 39,894 | D | A |
| 02 Jan, 2026 | Jack Kaye | Restricted Stock Unit | A | 39,894 | $0.00 | 39,894 | D | A |