Richard Parrillo
Insider
First SEC filing: June 22, 2026 · Latest: June 22, 2026
Insider at
Insider transactions
3 buys (P)
0 sells (S)
Net: $73,114
Avg return of open purchases vs now: 8.3%
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 | 31,780 | · | · | 31,780 Direct | · | Acquired | (price as of 2026-10-06) |
| May 14, 2026 | HDSN | P | 1,400 | $4.97 | $6,958 | 25,595 Direct | +5.79% | Acquired | 7.1% (price as of 2026-10-06) |
| May 14, 2026 | HDSN | P | 3,600 | $4.96 | $17,856 | 24,195 Direct | +17.48% | Acquired | 7.4% (price as of 2026-10-06) |
| May 13, 2026 | HDSN | P | 10,000 | $4.83 | $48,300 | 195,746 Direct | +5.38% | Acquired | 10.2% (price as of 2026-10-06) |
| June 18, 2025 | HDSN | A | 13,698 | · | · | 13,698 Direct | · | Acquired | (price as of 2026-10-06) |
| June 18, 2025 | HDSN | A | 3,182 | · | · | 185,746 Direct | +1.74% | Acquired | (price as of 2026-10-06) |
| June 19, 2024 | HDSN | A | 14,493 | · | · | 14,493 Direct | -50.00% | Disposed | (price as of 2026-10-06) |
| June 19, 2024 | HDSN | A | 2,796 | · | · | 182,564 Direct | +1.56% | Acquired | (price as of 2026-10-06) |
| Dec. 14, 2023 | HDSN | S | 5,103 | $13.25 | $67,615 | 179,768 Direct | -2.76% | Disposed | -59.8% (price as of 2026-10-06) |
| Dec. 14, 2023 | HDSN | S | 51 | $13.26 | $676 | 184,871 Direct | -0.03% | Disposed | -59.8% (price as of 2026-10-06) |
| Dec. 14, 2023 | HDSN | S | 51 | $13.27 | $677 | 184,922 Direct | -0.03% | Disposed | -59.9% (price as of 2026-10-06) |
| Dec. 14, 2023 | HDSN | S | 12,686 | $13.30 | $168,724 | 184,973 Direct | -6.42% | Disposed | -60.0% (price as of 2026-10-06) |
| Dec. 14, 2023 | HDSN | S | 55 | $13.32 | $733 | 197,659 Direct | -0.03% | Disposed | -60.0% (price as of 2026-10-06) |
| Dec. 14, 2023 | HDSN | S | 2,259 | $13.31 | $30,067 | 197,714 Direct | -1.13% | Disposed | -60.0% (price as of 2026-10-06) |
| Dec. 13, 2023 | HDSN | S | 1,000 | $12.91 | $12,910 | 199,973 Direct | -0.50% | Disposed | -58.8% (price as of 2026-10-06) |
| Dec. 13, 2023 | HDSN | S | 134 | $12.92 | $1,731 | 200,973 Direct | -0.07% | Disposed | -58.8% (price as of 2026-10-06) |
| Dec. 13, 2023 | HDSN | S | 300 | $12.96 | $3,888 | 201,107 Direct | -0.15% | Disposed | -58.9% (price as of 2026-10-06) |
| Dec. 13, 2023 | HDSN | S | 9,865 | $12.91 | $127,357 | 201,407 Direct | -4.67% | Disposed | -58.8% (price as of 2026-10-06) |
| Dec. 13, 2023 | HDSN | S | 11,100 | $12.95 | $143,745 | 211,272 Direct | -4.99% | Disposed | -58.9% (price as of 2026-10-06) |
| Dec. 12, 2023 | HDSN | S | 10,000 | $12.85 | $128,500 | 222,372 Direct | -4.30% | Disposed | -58.6% (price as of 2026-10-06) |
| Dec. 12, 2023 | HDSN | S | 10,000 | $12.95 | $129,500 | 232,372 Direct | -4.13% | Disposed | -58.9% (price as of 2026-10-06) |
| Dec. 12, 2023 | HDSN | S | 10,000 | $12.75 | $127,500 | 242,372 Direct | -3.96% | Disposed | -58.2% (price as of 2026-10-06) |
| July 19, 2023 | HDSN | M | 21,739 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| July 19, 2023 | HDSN | F | 2,252 | $9.46 | $21,304 | 252,372 Direct | -0.88% | Disposed | -43.7% (price as of 2026-10-06) |
| July 19, 2023 | HDSN | M | 21,739 | $0.98 | $21,304 | 254,624 Direct | +9.33% | Acquired | 443.4% (price as of 2026-10-06) |
| June 14, 2023 | HDSN | A | 17,606 | · | · | 17,606 Direct | · | Acquired | (price as of 2026-10-06) |
| Sept. 30, 2022 | HDSN | A | 2,143 | · | · | 232,885 Direct | +0.93% | Acquired | (price as of 2026-10-06) |
| June 9, 2022 | HDSN | A | 2,726 | · | · | 2,726 Direct | · | Acquired | (price as of 2026-10-06) |
| March 31, 2022 | HDSN | M | 1,300 | $1.70 | $2,210 | 231,100 Direct | +0.57% | Acquired | 213.2% (price as of 2026-10-06) |
| March 31, 2022 | HDSN | M | 1,300 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| March 31, 2022 | HDSN | M | 80,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| March 31, 2022 | HDSN | F | 358 | $6.17 | $2,209 | 230,742 Direct | -0.15% | Disposed | -13.7% (price as of 2026-10-06) |
| March 31, 2022 | HDSN | F | 8,038 | $6.17 | $49,594 | 229,800 Direct | -3.38% | Disposed | -13.7% (price as of 2026-10-06) |
| March 31, 2022 | HDSN | M | 80,000 | $0.62 | $49,600 | 237,838 Direct | +50.68% | Acquired | 758.9% (price as of 2026-10-06) |
| July 1, 2021 | HDSN | A | 8,276 | · | · | 8,276 Direct | · | Acquired | (price as of 2026-10-06) |
| May 27, 2021 | HDSN | M | 18,092 | $1.76 | $31,842 | 119,476 Direct | +17.85% | Acquired | 202.6% (price as of 2026-10-06) |
| May 27, 2021 | HDSN | F | 11,413 | $2.79 | $31,842 | 108,063 Direct | -9.55% | Disposed | 90.9% (price as of 2026-10-06) |
| May 27, 2021 | HDSN | M | 39,136 | $1.09 | $42,658 | 147,199 Direct | +36.22% | Acquired | 388.5% (price as of 2026-10-06) |
| May 27, 2021 | HDSN | F | 15,290 | $2.79 | $42,659 | 131,909 Direct | -10.39% | Disposed | 90.9% (price as of 2026-10-06) |
| May 27, 2021 | HDSN | M | 42,553 | $1.09 | $46,383 | 174,462 Direct | +32.26% | Acquired | 388.5% (price as of 2026-10-06) |
| May 27, 2021 | HDSN | F | 16,624 | $2.79 | $46,381 | 157,838 Direct | -9.53% | Disposed | 90.9% (price as of 2026-10-06) |
| May 27, 2021 | HDSN | M | 18,092 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| May 27, 2021 | HDSN | M | 39,136 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| May 27, 2021 | HDSN | M | 42,553 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| July 20, 2020 | HDSN | A | 21,739 | · | · | 21,739 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 19, 2019 | HDSN | D | 25,000 | · | · | 25,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 19, 2019 | HDSN | A | 35,000 | · | · | 35,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 19, 2019 | HDSN | A | 25,000 | · | · | 25,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 19, 2019 | HDSN | A | 35,000 | · | · | 25,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 27, 2019 | HDSN | A | 80,000 | · | · | 80,000 Direct | · | Acquired | (price as of 2026-10-06) |
| May 2, 2019 | HDSN | A | 1,300 | · | · | 1,300 Direct | · | Acquired | (price as of 2026-10-06) |
| Nov. 30, 2018 | HDSN | A | 42,553 | · | · | 42,553 Direct | · | Acquired | (price as of 2026-10-06) |
| Nov. 30, 2018 | HDSN | A | 39,136 | · | · | 39,136 Direct | · | Acquired | (price as of 2026-10-06) |
| July 26, 2018 | HDSN | A | 18,092 | · | · | 18,092 Direct | · | Acquired | (price as of 2026-10-06) |
| May 30, 2018 | HDSN | P | 2,000 | $2.33 | $4,660 | 101,384 Direct | +2.01% | Acquired | 128.5% (price as of 2026-10-06) |
| May 30, 2018 | HDSN | P | 5,000 | $2.31 | $11,550 | 99,384 Direct | +5.30% | Acquired | 130.5% (price as of 2026-10-06) |
| May 30, 2018 | HDSN | P | 4,000 | $2.28 | $9,120 | 94,384 Direct | +4.43% | Acquired | 133.6% (price as of 2026-10-06) |
| May 30, 2018 | HDSN | P | 9,000 | $2.27 | $20,430 | 90,384 Direct | +11.06% | Acquired | 134.6% (price as of 2026-10-06) |
| May 30, 2018 | HDSN | P | 5,000 | $2.22 | $11,100 | 81,384 Direct | +6.55% | Acquired | 139.9% (price as of 2026-10-06) |
| Dec. 15, 2017 | HDSN | P | 5,000 | $5.78 | $28,900 | 133,807 Direct | +3.88% | Acquired | -7.9% (price as of 2026-10-06) |
| Dec. 15, 2017 | HDSN | P | 5,000 | $5.81 | $29,050 | 128,807 Direct | +4.04% | Acquired | -8.3% (price as of 2026-10-06) |
| Nov. 13, 2017 | HDSN | A | 18,018 | · | · | 18,018 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 21, 2017 | HDSN | F | 10,216 | $8.41 | $85,917 | 105,789 Direct | -8.81% | Disposed | -36.7% (price as of 2026-10-06) |
| Aug. 21, 2017 | HDSN | M | 26,600 | $3.23 | $85,918 | 116,005 Direct | +29.75% | Acquired | 64.9% (price as of 2026-10-06) |
| Aug. 1, 2017 | HDSN | M | 26,600 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| Aug. 24, 2016 | HDSN | A | 11,236 | · | · | 11,236 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 10, 2016 | HDSN | S | 28,800 | $4.94 | $142,272 | 104,769 Direct | -21.56% | Disposed | 7.8% (price as of 2026-10-06) |
| Aug. 10, 2016 | HDSN | S | 28,800 | $4.94 | $142,272 | 65,000 Direct | -30.70% | Disposed | 7.8% (price as of 2026-10-06) |
| Aug. 9, 2016 | HDSN | S | 13,200 | $4.94 | $65,208 | 133,569 Direct | -8.99% | Disposed | 7.8% (price as of 2026-10-06) |
| Aug. 9, 2016 | HDSN | S | 13,200 | $4.94 | $65,208 | 93,800 Direct | -12.34% | Disposed | 7.8% (price as of 2026-10-06) |
| Aug. 5, 2016 | HDSN | S | 8,000 | $4.91 | $39,280 | 146,769 Direct | -5.17% | Disposed | 8.5% (price as of 2026-10-06) |
| Sept. 9, 2015 | HDSN | A | 28,169 | · | · | 28,169 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 5, 2015 | HDSN | S | 8,000 | $4.91 | $39,280 | 107,000 Direct | -6.96% | Disposed | 8.5% (price as of 2026-10-06) |
| May 11, 2015 | HDSN | P | 44,502 | $4.01 | $178,453 | 126,600 Direct | +54.21% | Acquired | 32.8% (price as of 2026-10-06) |
| May 8, 2015 | HDSN | P | 55,498 | $3.92 | $217,552 | 82,098 Direct | +208.64% | Acquired | 35.8% (price as of 2026-10-06) |
| Oct. 1, 2014 | HDSN | A | 26,600 | · | · | 26,600 Direct | · | Acquired | (price as of 2026-10-06) |
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 | 31,780 | Acquired |
| 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 | 14,493 | Disposed |
| July 19, 2023 | HDSN | Stock Option | Common Stock | $0.98 | July 20, 2023 | 21,739 | Disposed |
| June 14, 2023 | HDSN | Stock Option | Common Stock | $9.55 | June 14, 2026 | 17,606 | Acquired |
| June 9, 2022 | HDSN | Stock Option | Common Stock | $9.82 | June 9, 2025 | 2,726 | Acquired |
| March 31, 2022 | HDSN | Stock Option | Common Stock | $1.70 | May 2, 2022 | 1,300 | Disposed |
| March 31, 2022 | HDSN | Stock Option | Common Stock | $0.62 | Aug. 27, 2022 | 80,000 | Disposed |
| July 1, 2021 | HDSN | Stock Option | Common Stock | $3.40 | July 1, 2024 | 8,276 | Acquired |
| May 27, 2021 | HDSN | Stock Option | Common Stock | $1.76 | July 26, 2021 | 18,092 | Disposed |
| May 27, 2021 | HDSN | Stock Option | Common Stock | $1.09 | Nov. 30, 2021 | 39,136 | Disposed |
| May 27, 2021 | HDSN | Stock Option | Common Stock | $1.09 | Nov. 30, 2021 | 42,553 | Disposed |
| July 20, 2020 | HDSN | Stock Option | Common Stock | $0.98 | July 20, 2023 | 21,739 | 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 |
| 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 |
| May 2, 2019 | HDSN | Stock Option (Right to Buy) | Common Stock | $1.70 | May 2, 2022 | 1,300 | Acquired |
| Nov. 30, 2018 | HDSN | Stock Option (Right to Buy) | Common Stock | $1.09 | Nov. 30, 2021 | 42,553 | Acquired |
| Nov. 30, 2018 | HDSN | Stcck Option (Right to Buy) | Common Stock | $1.09 | Nov. 30, 2021 | 39,136 | Acquired |
| July 26, 2018 | HDSN | Stock Option (Right to Buy) | Common Stock | $1.76 | July 26, 2021 | 18,092 | Acquired |
| Nov. 13, 2017 | HDSN | Stock Option (Right to buy) | Common Stock | $6.18 | Nov. 13, 2020 | 18,018 | Acquired |
| Aug. 1, 2017 | HDSN | Stock Option (Right to Buy) | Common Stock | $3.23 | Oct. 1, 2017 | 26,600 | Disposed |
| Aug. 24, 2016 | HDSN | Stock Option (Right to Buy) | Common Stock | $6.35 | Aug. 24, 2019 | 11,236 | Acquired |
| Sept. 9, 2015 | HDSN | Stock Option (Right to Buy) | Common Stock | $3.05 | Sept. 9, 2018 | 28,169 | Acquired |
| 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).