Mark A Emalfarb
Insider
First SEC filing: Feb. 13, 2019 · Latest: Feb. 13, 2019
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Jan. 2, 2026 | DYAI | A | 102,609 | · | · | 4,832,667 Direct | +2.17% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2026 | DYAI | A | 126,000 | · | · | 126,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 23, 2025 | DYAI | D | None | · | · | 0 Indirect | · | Disposed | (price as of 2026-10-05) |
| Dec. 23, 2025 | DYAI | A | None | · | · | · Indirect | · | Acquired | (price as of 2026-10-05) |
| Sept. 15, 2025 | DYAI | P | None | $1000000.00 | · | · Indirect | · | Acquired | -100.0% (price as of 2026-10-05) |
| Jan. 2, 2025 | DYAI | A | 73,111 | · | · | 4,730,058 Direct | +1.57% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2025 | DYAI | A | 172,000 | · | · | 172,000 Direct | · | Acquired | (price as of 2026-10-05) |
| March 13, 2024 | DYAI | A | 124,454 | · | · | 4,656,947 Direct | +2.75% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2024 | DYAI | A | 200,000 | · | · | 200,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 3, 2023 | DYAI | A | 138,478 | $1.38 | $191,100 | 4,532,493 Direct | +3.15% | Acquired | -67.1% (price as of 2026-10-05) |
| Jan. 3, 2023 | DYAI | A | 200,000 | · | · | 200,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 3, 2022 | DYAI | A | 200,000 | · | · | 200,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 23, 2021 | DYAI | S | 28,767 | $4.10 | $117,945 | 4,244,015 Indirect | -0.67% | Disposed | -88.9% (price as of 2026-10-05) |
| Dec. 23, 2021 | DYAI | M | 150,000 | $1.63 | $244,500 | 4,394,015 Indirect | +3.53% | Acquired | -72.1% (price as of 2026-10-05) |
| Dec. 23, 2021 | DYAI | M | 150,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Dec. 22, 2021 | DYAI | S | 35,649 | $4.12 | $146,874 | 4,272,782 Indirect | -0.83% | Disposed | -89.0% (price as of 2026-10-05) |
| Dec. 21, 2021 | DYAI | S | 26,486 | $4.33 | $114,684 | 4,308,431 Indirect | -0.61% | Disposed | -89.5% (price as of 2026-10-05) |
| June 9, 2021 | DYAI | S | 23,000 | $3.72 | $85,560 | 4,234,917 Indirect | -0.54% | Disposed | -87.8% (price as of 2026-10-05) |
| June 9, 2021 | DYAI | M | 100,000 | $1.67 | $167,000 | 4,334,917 Indirect | +2.36% | Acquired | -72.8% (price as of 2026-10-05) |
| June 9, 2021 | DYAI | M | 100,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| June 8, 2021 | DYAI | S | 30,000 | $3.82 | $114,600 | 4,257,917 Indirect | -0.70% | Disposed | -88.1% (price as of 2026-10-05) |
| June 7, 2021 | DYAI | S | 44,000 | $3.95 | $173,800 | 4,287,917 Indirect | -1.02% | Disposed | -88.5% (price as of 2026-10-05) |
| June 4, 2021 | DYAI | S | 132,000 | $3.85 | $508,200 | 3,931,917 Indirect | -3.25% | Disposed | -88.2% (price as of 2026-10-05) |
| June 4, 2021 | DYAI | M | 400,000 | $1.67 | $668,000 | 4,331,917 Indirect | +10.17% | Acquired | -72.8% (price as of 2026-10-05) |
| June 4, 2021 | DYAI | M | 400,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| June 3, 2021 | DYAI | S | 26,721 | $3.61 | $96,463 | 4,063,917 Indirect | -0.65% | Disposed | -87.4% (price as of 2026-10-05) |
| June 2, 2021 | DYAI | S | 76,349 | $3.74 | $285,545 | 4,090,638 Indirect | -1.83% | Disposed | -87.9% (price as of 2026-10-05) |
| Jan. 4, 2021 | DYAI | A | 200,000 | · | · | 200,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2020 | DYAI | A | 300,000 | · | · | 300,000 Direct | · | Acquired | (price as of 2026-10-05) |
| April 12, 2019 | DYAI | M | 37,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| April 12, 2019 | DYAI | M | 12,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| April 12, 2019 | DYAI | M | 37,500 | $1.71 | $64,125 | 4,166,987 Indirect | +0.91% | Acquired | -73.5% (price as of 2026-10-05) |
| April 12, 2019 | DYAI | M | 12,500 | $1.71 | $21,375 | 4,129,487 Indirect | +0.30% | Acquired | -73.5% (price as of 2026-10-05) |
| April 5, 2007 | DYAI | A | 150,000 | $5.80 | $870,000 | 150,000 Direct | · | Acquired | -92.2% (price as of 2026-10-05) |
| May 1, 2006 | DYAI | C | 251,298 | $3.33 | $836,822 | 5,822,125 Indirect | +4.51% | Acquired | -86.4% (price as of 2026-10-05) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Jan. 2, 2026 | DYAI | Stock Option | Common Stock | $0.94 | Jan. 2, 2036 | 126,000 | Acquired |
| Dec. 23, 2025 | DYAI | Senior Secured Convertible Promissory Note due March 8, 2027 | Common Stock | $1.40 | March 8, 2027 | · | Disposed |
| Dec. 23, 2025 | DYAI | Senior Secured Convertible Promissory Note due Dec 31, 2027 | Common Stock | $1.05 | Dec. 31, 2027 | · | Acquired |
| Sept. 15, 2025 | DYAI | Senior Secured Convertible Promissory Note due March 8, 2027 | Common Stock | $1.40 | March 8, 2027 | · | Acquired |
| Jan. 2, 2025 | DYAI | Stock Option | Common Stock | $1.74 | Jan. 2, 2035 | 172,000 | Acquired |
| Jan. 2, 2024 | DYAI | Stock Option | Common Stock | $1.59 | Jan. 2, 2034 | 200,000 | Acquired |
| Jan. 3, 2023 | DYAI | Stock Option | Common Stock | $1.38 | Jan. 2, 2033 | 200,000 | Acquired |
| Jan. 3, 2022 | DYAI | Stock Option | Common Stock | $4.81 | Jan. 2, 2032 | 200,000 | Acquired |
| Dec. 23, 2021 | DYAI | Stock Option | Common Stock | $1.63 | Jan. 3, 2022 | 150,000 | Disposed |
| June 9, 2021 | DYAI | Stock Option | Common Stock | $1.67 | June 21, 2021 | 100,000 | Disposed |
| June 4, 2021 | DYAI | Stock Option | Common Stock | $1.67 | June 21, 2021 | 400,000 | Disposed |
| Jan. 4, 2021 | DYAI | Stock Option | Common Stock | $5.16 | Jan. 3, 2031 | 200,000 | Acquired |
| Jan. 2, 2020 | DYAI | Stock Option | Common Stock | $5.27 | Jan. 1, 2030 | 300,000 | Acquired |
| April 12, 2019 | DYAI | Stock Option | Common Stock | $1.71 | April 13, 2019 | 37,500 | Disposed |
| April 12, 2019 | DYAI | Stock Option | Common Stock | $1.71 | April 13, 2019 | 12,500 | Disposed |
| April 5, 2007 | DYAI | Non-qualified Stock Option | Common Stock | $5.80 | April 4, 2017 | 150,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 12 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 13, 2019 | DYAI | Common Stock | 4,116,987 | Indirect |
| Feb. 13, 2019 | DYAI | Stock Option | 300,000 | Direct |
| Feb. 13, 2019 | DYAI | Stock Option | 150,000 | Direct |
| Feb. 13, 2019 | DYAI | Stock Option | 270,000 | Direct |
| Feb. 13, 2019 | DYAI | Stock Option | 12,500 | Direct |
| Feb. 13, 2019 | DYAI | Stock Option | 37,500 | Direct |
| Feb. 13, 2019 | DYAI | Stock Option | 100,000 | Direct |
| Feb. 13, 2019 | DYAI | Stock Option | 400,000 | Direct |
| May 26, 2005 | DYAI | Common Stock | 5,570,827 | Indirect |
| May 26, 2005 | DYAI | Warrant | 1,092,500 | Indirect |
| May 26, 2005 | DYAI | Convertible Note | 251,298 | Indirect |
| May 26, 2005 | DYAI | Warrant | 183,934 | Indirect |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2019 | $440,000 | $250,000 | · | $156,000 | · | · | $228,049 | $1,074,049 |
| 2018 | $393,012 | $200,000 | · | $99,900 | · | · | $468,891 | $1,161,803 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.