Eric A Prouty
Insider
First SEC filing: April 30, 2018 · Latest: April 30, 2018
Insider at
Insider transactions
1 buys (P)
0 sells (S)
Net: $24,200
Avg return of open purchases vs now: 8.1%
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 |
|---|---|---|---|---|---|---|---|---|---|
| June 17, 2026 | HDSN | A | 21,186 | · | · | 21,186 Direct | · | Acquired | (price as of 2026-10-02) |
| June 17, 2026 | HDSN | A | 4,440 | · | · | 158,292 Direct | +2.89% | Acquired | (price as of 2026-10-02) |
| May 13, 2026 | HDSN | P | 5,000 | $4.84 | $24,200 | 153,852 Direct | +3.36% | Acquired | 8.1% (price as of 2026-10-02) |
| July 31, 2025 | HDSN | F | 3,713 | $9.39 | $34,865 | 148,852 Direct | -2.43% | Disposed | -44.3% (price as of 2026-10-02) |
| July 31, 2025 | HDSN | M | 4,744 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| July 31, 2025 | HDSN | M | 4,744 | $7.35 | $34,868 | 152,565 Direct | +3.21% | Acquired | -28.8% (price as of 2026-10-02) |
| June 18, 2025 | HDSN | A | 13,698 | · | · | 13,698 Direct | · | Acquired | (price as of 2026-10-02) |
| June 18, 2025 | HDSN | A | 3,182 | · | · | 147,821 Direct | +2.20% | Acquired | (price as of 2026-10-02) |
| June 19, 2024 | HDSN | A | 21,739 | · | · | 21,739 Direct | · | Acquired | (price as of 2026-10-02) |
| June 14, 2023 | HDSN | A | 2,618 | · | · | 144,639 Direct | +1.84% | Acquired | (price as of 2026-10-02) |
| June 14, 2023 | HDSN | A | 11,737 | · | · | 11,737 Direct | · | Acquired | (price as of 2026-10-02) |
| June 14, 2023 | HDSN | S | 20,000 | $9.56 | $191,200 | 142,021 Direct | -12.34% | Disposed | -45.3% (price as of 2026-10-02) |
| June 2, 2023 | HDSN | M | 43,478 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| June 2, 2023 | HDSN | F | 4,626 | $9.21 | $42,605 | 162,021 Direct | -2.78% | Disposed | -43.2% (price as of 2026-10-02) |
| June 2, 2023 | HDSN | M | 43,478 | $0.98 | $42,608 | 166,647 Direct | +35.30% | Acquired | 433.7% (price as of 2026-10-02) |
| Sept. 30, 2022 | HDSN | A | 4,744 | · | · | 4,744 Direct | · | Acquired | (price as of 2026-10-02) |
| June 9, 2022 | HDSN | A | 2,726 | · | · | 2,726 Direct | · | Acquired | (price as of 2026-10-02) |
| May 9, 2022 | HDSN | S | 75,000 | $9.00 | $675,000 | 123,169 Direct | -37.85% | Disposed | -41.9% (price as of 2026-10-02) |
| May 6, 2022 | HDSN | M | 80,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 6, 2022 | HDSN | F | 5,339 | $9.29 | $49,599 | 198,169 Direct | -2.62% | Disposed | -43.7% (price as of 2026-10-02) |
| May 6, 2022 | HDSN | M | 80,000 | $0.62 | $49,600 | 203,508 Direct | +64.77% | Acquired | 743.5% (price as of 2026-10-02) |
| Aug. 30, 2021 | HDSN | M | 42,553 | $1.09 | $46,383 | 137,780 Direct | +44.69% | Acquired | 379.8% (price as of 2026-10-02) |
| Aug. 30, 2021 | HDSN | F | 14,272 | $3.25 | $46,384 | 123,508 Direct | -10.36% | Disposed | 60.9% (price as of 2026-10-02) |
| Aug. 30, 2021 | HDSN | M | 42,553 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| July 1, 2021 | HDSN | A | 7,059 | · | · | 95,227 Direct | +8.01% | Acquired | (price as of 2026-10-02) |
| June 2, 2021 | HDSN | M | 18,092 | $1.76 | $31,842 | 98,782 Direct | +22.42% | Acquired | 197.2% (price as of 2026-10-02) |
| June 2, 2021 | HDSN | F | 10,614 | $3.00 | $31,842 | 88,168 Direct | -10.74% | Disposed | 74.3% (price as of 2026-10-02) |
| June 2, 2021 | HDSN | M | 18,092 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| July 20, 2020 | HDSN | A | 43,478 | · | · | 43,478 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 19, 2019 | HDSN | A | 25,000 | · | · | 25,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 19, 2019 | HDSN | A | 35,000 | · | · | 35,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 27, 2019 | HDSN | A | 80,000 | · | · | 80,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 8, 2019 | HDSN | P | 5,000 | $1.89 | $9,450 | 80,690 Direct | +6.61% | Acquired | 176.7% (price as of 2026-10-02) |
| Jan. 17, 2019 | AQMS | P | 5,000 | $1.90 | $9,500 | 25,622 Direct | +24.25% | Acquired | -99.4% (price as of 2026-10-02) |
| Jan. 2, 2019 | AQMS | A | 6,757 | · | · | 20,622 Direct | +48.73% | Acquired | (price as of 2026-10-02) |
| Dec. 12, 2018 | HDSN | P | 5,000 | $1.64 | $8,200 | 75,690 Direct | +7.07% | Acquired | 218.9% (price as of 2026-10-02) |
| Nov. 30, 2018 | HDSN | A | 42,553 | · | · | 42,553 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 15, 2018 | HDSN | P | 5,000 | $1.81 | $9,050 | 70,690 Direct | +7.61% | Acquired | 189.0% (price as of 2026-10-02) |
| July 26, 2018 | HDSN | A | 18,092 | · | · | 18,092 Direct | · | Acquired | (price as of 2026-10-02) |
| July 26, 2018 | HDSN | A | 11,364 | · | · | 65,690 Direct | +20.92% | Acquired | (price as of 2026-10-02) |
| July 2, 2018 | AQMS | A | 8,865 | · | · | 13,865 Direct | +177.30% | Acquired | (price as of 2026-10-02) |
| June 18, 2018 | AQMS | P | 5,000 | $2.85 | $14,250 | 5,000 Direct | · | Acquired | -99.6% (price as of 2026-10-02) |
| May 24, 2018 | HDSN | P | 5,000 | $2.33 | $11,650 | 54,326 Direct | +10.14% | Acquired | 124.5% (price as of 2026-10-02) |
| May 4, 2018 | AQMS | A | 25,735 | · | · | 25,735 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 13, 2017 | HDSN | A | 3,236 | · | · | 49,326 Direct | +7.02% | Acquired | (price as of 2026-10-02) |
| Aug. 21, 2017 | HDSN | M | 26,600 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 21, 2017 | HDSN | F | 10,216 | $8.41 | $85,917 | 46,090 Direct | -18.14% | Disposed | -37.8% (price as of 2026-10-02) |
| Aug. 21, 2017 | HDSN | M | 26,600 | $3.23 | $85,918 | 56,306 Direct | +89.54% | Acquired | 61.9% (price as of 2026-10-02) |
| Aug. 24, 2016 | HDSN | A | 3,149 | · | · | 56,306 Direct | +5.92% | Acquired | (price as of 2026-10-02) |
| Sept. 9, 2015 | HDSN | A | 6,557 | · | · | 53,157 Direct | +14.07% | Acquired | (price as of 2026-10-02) |
| Oct. 1, 2014 | HDSN | A | 26,600 | · | · | 26,600 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| June 17, 2026 | HDSN | Stock Options | Common Stock | $5.63 | June 17, 2029 | 21,186 | Acquired |
| July 31, 2025 | HDSN | Stock Options | Common Stock | $7.35 | Sept. 30, 2025 | 4,744 | Disposed |
| June 18, 2025 | HDSN | Stock Options | Common Stock | $7.86 | June 18, 2028 | 13,698 | Acquired |
| June 19, 2024 | HDSN | Stock Option | Common Stock | $8.94 | June 19, 2027 | 21,739 | Acquired |
| June 14, 2023 | HDSN | Stock Option | Common Stock | $9.55 | June 14, 2026 | 11,737 | Acquired |
| June 2, 2023 | HDSN | Stock Option | Common Stock | $0.98 | July 20, 2023 | 43,478 | Disposed |
| Sept. 30, 2022 | HDSN | Stock Option | Common Stock | $7.35 | Sept. 30, 2025 | 4,744 | Acquired |
| June 9, 2022 | HDSN | Stock Option | Common Stock | $9.82 | June 9, 2025 | 2,726 | Acquired |
| May 6, 2022 | HDSN | Stock Option | Common Stock | $0.62 | Aug. 27, 2022 | 80,000 | Disposed |
| Aug. 30, 2021 | HDSN | Stock Option | Common Stock | $1.09 | Nov. 30, 2021 | 42,553 | Disposed |
| June 2, 2021 | HDSN | Stock Option | Common Stock | $1.76 | July 26, 2021 | 18,092 | Disposed |
| July 20, 2020 | HDSN | Stock Option | Common Stock | $0.98 | July 20, 2023 | 43,478 | Acquired |
| Dec. 19, 2019 | HDSN | Stock Option (Right to Buy) | Common Stock | $0.75 | Dec. 19, 2029 | 25,000 | Acquired |
| Dec. 19, 2019 | HDSN | Stock Option (Right to Buy) | Common Stock | $0.75 | Dec. 19, 2029 | 35,000 | Acquired |
| Aug. 27, 2019 | HDSN | Stock Option (Right to Buy) | Common Stock | $0.62 | Aug. 27, 2022 | 80,000 | Acquired |
| Nov. 30, 2018 | HDSN | Stock Option (Right to Buy) | Common Stock | $1.09 | Nov. 30, 2021 | 42,553 | Acquired |
| July 26, 2018 | HDSN | Stock Option (Right to Buy) | Common Stock | $1.76 | July 26, 2021 | 18,092 | Acquired |
| May 4, 2018 | AQMS | Director Option (right to buy) | Common Stock | $3.93 | May 4, 2023 | 25,735 | Acquired |
| Aug. 21, 2017 | HDSN | Stock Option (Right to Buy) | Common Stock | $3.23 | Oct. 1, 2017 | 26,600 | Disposed |
| Oct. 1, 2014 | HDSN | Stock Option (Right to Buy) | Common Stock | $3.23 | Oct. 1, 2017 | 26,600 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.