Eric A Prouty
CIK 1620724 · View on SEC EDGAR ↗
Insider
First SEC filing: April 30, 2018 · Latest: April 30, 2018
On this page
Insider at
Insider transactions
1 buys (P)
0 sells (S)
Net:
$24,200
+ 34 non-open-market transactions below
Avg return of open purchases vs now:
20.1%
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
34 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 13, 2026 | HDSN | P | 5,000 | $4.84 | $24,200 | 153,852 Direct | +3.36% | Acquired | 20.1% (price as of 2026-08-19) |
| June 14, 2023 | HDSN | S | 20,000 | $9.56 | $191,200 | 142,021 Direct | -12.34% | Disposed | -39.2% (price as of 2026-08-19) |
| May 9, 2022 | HDSN | S | 75,000 | $9.00 | $675,000 | 123,169 Direct | -37.85% | Disposed | -35.4% (price as of 2026-08-19) |
| May 8, 2019 | HDSN | P | 5,000 | $1.89 | $9,450 | 80,690 Direct | +6.61% | Acquired | 207.7% (price as of 2026-08-19) |
| Jan. 17, 2019 | AQMS | P | 5,000 | $1.90 | $9,500 | 25,622 Direct | +24.25% | Acquired | -99.3% (price as of 2026-08-19) |
| Dec. 12, 2018 | HDSN | P | 5,000 | $1.64 | $8,200 | 75,690 Direct | +7.07% | Acquired | 254.6% (price as of 2026-08-19) |
| Aug. 15, 2018 | HDSN | P | 5,000 | $1.81 | $9,050 | 70,690 Direct | +7.61% | Acquired | 221.3% (price as of 2026-08-19) |
| June 18, 2018 | AQMS | P | 5,000 | $2.85 | $14,250 | 5,000 Direct | — | Acquired | -99.5% (price as of 2026-08-19) |
| May 24, 2018 | HDSN | P | 5,000 | $2.33 | $11,650 | 54,326 Direct | +10.14% | Acquired | 149.6% (price as of 2026-08-19) |
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 (21,186) | $5.63 | June 17, 2029 | 21,186 | Acquired |
| July 31, 2025 | HDSN | Stock Options | Common Stock (4,744) | $7.35 | Sept. 30, 2025 | 4,744 | Disposed |
| June 18, 2025 | HDSN | Stock Options | Common Stock (13,698) | $7.86 | June 18, 2028 | 13,698 | Acquired |
| June 19, 2024 | HDSN | Stock Option | Common Stock (21,739) | $8.94 | June 19, 2027 | 21,739 | Acquired |
| June 14, 2023 | HDSN | Stock Option | Common Stock (11,737) | $9.55 | June 14, 2026 | 11,737 | Acquired |
| June 2, 2023 | HDSN | Stock Option | Common Stock (43,478) | $0.98 | July 20, 2023 | 43,478 | Disposed |
| Sept. 30, 2022 | HDSN | Stock Option | Common Stock (4,744) | $7.35 | Sept. 30, 2025 | 4,744 | Acquired |
| June 9, 2022 | HDSN | Stock Option | Common Stock (2,726) | $9.82 | June 9, 2025 | 2,726 | Acquired |
| May 6, 2022 | HDSN | Stock Option | Common Stock (80,000) | $0.62 | Aug. 27, 2022 | 80,000 | Disposed |
| Dec. 19, 2019 | HDSN | Stock Option (Right to Buy) | Common Stock (25,000) | $0.75 | Dec. 19, 2029 | 25,000 | Acquired |
| Dec. 19, 2019 | HDSN | Stock Option (Right to Buy) | Common Stock (35,000) | $0.75 | Dec. 19, 2029 | 35,000 | Acquired |
| Aug. 27, 2019 | HDSN | Stock Option (Right to Buy) | Common Stock (80,000) | $0.62 | Aug. 27, 2022 | 80,000 | Acquired |
| Nov. 30, 2018 | HDSN | Stock Option (Right to Buy) | Common Stock (42,553) | $1.09 | Nov. 30, 2021 | 42,553 | Acquired |
| July 26, 2018 | HDSN | Stock Option (Right to Buy) | Common Stock (18,092) | $1.76 | July 26, 2021 | 18,092 | Acquired |
| May 4, 2018 | AQMS | Director Option (right to buy) | Common Stock (25,735) | $3.93 | May 4, 2023 | 25,735 | Acquired |
| Aug. 21, 2017 | HDSN | Stock Option (Right to Buy) | Common Stock (26,600) | $3.23 | Oct. 1, 2017 | 26,600 | Disposed |
| Oct. 1, 2014 | HDSN | Stock Option (Right to Buy) | Common Stock (26,600) | $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.