Steven R Mitchell
Insider
First SEC filing: April 13, 2021 · Latest: April 13, 2021
Insider at
Insider transactions
3 buys (P)
0 sells (S)
Net: $565,771
Avg return of open purchases vs now: 1.4%
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 |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 8, 2026 | STEP | A | 4,828 | $50.74 | $244,973 | 17,621 Direct | +37.74% | Acquired | -11.3% (price as of 2026-10-05) |
| July 5, 2026 | ALKT | A | 533 | · | · | 98,026 Direct | +0.55% | Acquired | (price as of 2026-10-05) |
| May 19, 2026 | ALKT | A | 11,357 | · | · | 97,493 Direct | +13.18% | Acquired | (price as of 2026-10-05) |
| May 13, 2026 | ASPN | A | 8,706 | · | · | 8,706 Direct | · | Acquired | (price as of 2026-10-05) |
| May 13, 2026 | ASPN | A | 10,370 | · | · | 156,898 Direct | +7.08% | Acquired | (price as of 2026-10-05) |
| April 5, 2026 | ALKT | A | 524 | · | · | 86,136 Direct | +0.61% | Acquired | (price as of 2026-10-05) |
| Feb. 23, 2026 | STEP | P | 1,200 | $44.65 | $53,580 | 1,200 Direct | · | Acquired | 0.8% (price as of 2026-10-05) |
| Feb. 23, 2026 | STEP | P | 86 | $44.33 | $3,812 | 1,286 Direct | +7.17% | Acquired | 1.6% (price as of 2026-10-05) |
| Feb. 23, 2026 | STEP | P | 11,507 | $44.18 | $508,379 | 12,793 Direct | +894.79% | Acquired | 1.9% (price as of 2026-10-05) |
| Jan. 5, 2026 | ALKT | A | 396 | · | · | 85,612 Direct | +0.46% | Acquired | (price as of 2026-10-05) |
| Oct. 5, 2025 | ALKT | A | 347 | · | · | 85,216 Direct | +0.41% | Acquired | (price as of 2026-10-05) |
| July 5, 2025 | ALKT | A | 301 | · | · | 84,869 Direct | +0.36% | Acquired | (price as of 2026-10-05) |
| May 14, 2025 | ALKT | A | 7,225 | · | · | 84,568 Direct | +9.34% | Acquired | (price as of 2026-10-05) |
| April 30, 2025 | ASPN | A | 9,105 | · | · | 9,105 Direct | · | Acquired | (price as of 2026-10-05) |
| April 30, 2025 | ASPN | A | 10,370 | · | · | 146,528 Direct | +7.62% | Acquired | (price as of 2026-10-05) |
| April 5, 2025 | ALKT | A | 325 | · | · | 77,343 Direct | +0.42% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2025 | ALKT | A | 219 | · | · | 77,018 Direct | +0.29% | Acquired | (price as of 2026-10-05) |
| Oct. 5, 2024 | ALKT | A | 272 | · | · | 76,799 Direct | +0.36% | Acquired | (price as of 2026-10-05) |
| July 5, 2024 | ALKT | A | 311 | · | · | 76,527 Direct | +0.41% | Acquired | (price as of 2026-10-05) |
| June 11, 2024 | STEP | S | 27,500 | $44.34 | $1,219,350 | 0 Direct | -100.00% | Disposed | 1.5% (price as of 2026-10-05) |
| May 30, 2024 | ASPN | A | 1,657 | · | · | 1,657 Direct | · | Acquired | (price as of 2026-10-05) |
| May 30, 2024 | ASPN | A | 1,898 | · | · | 136,158 Direct | +1.41% | Acquired | (price as of 2026-10-05) |
| May 15, 2024 | ALKT | A | 6,853 | · | · | 76,216 Direct | +9.88% | Acquired | (price as of 2026-10-05) |
| April 5, 2024 | ALKT | A | 354 | · | · | 69,363 Direct | +0.51% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2024 | ALKT | A | 367 | · | · | 69,009 Direct | +0.53% | Acquired | (price as of 2026-10-05) |
| Oct. 5, 2023 | ALKT | A | 485 | · | · | 68,642 Direct | +0.71% | Acquired | (price as of 2026-10-05) |
| Sept. 7, 2023 | ASPN | P | 7,541 | $6.50 | $49,016 | 134,260 Direct | +5.95% | Acquired | -11.2% (price as of 2026-10-05) |
| Sept. 5, 2023 | ASPN | P | 50,000 | $6.17 | $308,500 | 126,719 Direct | +65.17% | Acquired | -6.4% (price as of 2026-10-05) |
| July 28, 2023 | ALKT | J | 10,086,450 | · | · | 2,521,611 Indirect | -80.00% | Disposed | (price as of 2026-10-05) |
| July 5, 2023 | ALKT | A | 552 | · | · | 68,157 Direct | +0.82% | Acquired | (price as of 2026-10-05) |
| June 1, 2023 | ASPN | A | 7,712 | · | · | 7,712 Direct | · | Acquired | (price as of 2026-10-05) |
| June 1, 2023 | ASPN | A | 7,488 | · | · | 76,719 Direct | +10.82% | Acquired | (price as of 2026-10-05) |
| May 17, 2023 | ALKT | A | 13,699 | · | · | 67,605 Direct | +25.41% | Acquired | (price as of 2026-10-05) |
| April 5, 2023 | ALKT | A | 631 | · | · | 53,906 Direct | +1.18% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2023 | ALKT | A | 636 | · | · | 53,275 Direct | +1.21% | Acquired | (price as of 2026-10-05) |
| Oct. 5, 2022 | ALKT | A | 562 | · | · | 52,639 Direct | +1.08% | Acquired | (price as of 2026-10-05) |
| July 5, 2022 | ALKT | A | 642 | · | · | 52,077 Direct | +1.25% | Acquired | (price as of 2026-10-05) |
| June 2, 2022 | ASPN | A | 3,178 | · | · | 3,178 Direct | · | Acquired | (price as of 2026-10-05) |
| June 2, 2022 | ASPN | A | 2,699 | · | · | 69,231 Direct | +4.06% | Acquired | (price as of 2026-10-05) |
| May 18, 2022 | ALKT | A | 14,179 | · | · | 51,435 Direct | +38.06% | Acquired | (price as of 2026-10-05) |
| April 5, 2022 | ALKT | A | 590 | · | · | 37,256 Direct | +1.61% | Acquired | (price as of 2026-10-05) |
| Jan. 5, 2022 | ALKT | A | 379 | · | · | 36,666 Direct | +1.04% | Acquired | (price as of 2026-10-05) |
| Oct. 5, 2021 | ALKT | A | 314 | · | · | 36,287 Direct | +0.87% | Acquired | (price as of 2026-10-05) |
| Sept. 29, 2021 | STEP | S 10b5-1 | 7,865 | $43.55 | $342,521 | 27,500 Direct | -22.24% | Disposed | 3.4% (price as of 2026-10-05) |
| Sept. 29, 2021 | STEP | S 10b5-1 | 7,865 | $43.55 | $342,521 | 27,500 Direct | -22.24% | Disposed | 3.4% (price as of 2026-10-05) |
| Sept. 28, 2021 | STEP | S 10b5-1 | 17,845 | $43.11 | $769,298 | 35,365 Direct | -33.54% | Disposed | 4.4% (price as of 2026-10-05) |
| Sept. 28, 2021 | STEP | S 10b5-1 | 17,845 | $43.11 | $769,298 | 35,365 Direct | -33.54% | Disposed | 4.4% (price as of 2026-10-05) |
| Sept. 27, 2021 | STEP | S 10b5-1 | 9,290 | $44.70 | $415,263 | 53,210 Direct | -14.86% | Disposed | 0.7% (price as of 2026-10-05) |
| Sept. 27, 2021 | STEP | S 10b5-1 | 9,290 | $44.70 | $415,263 | 53,210 Direct | -14.86% | Disposed | 0.7% (price as of 2026-10-05) |
| July 28, 2021 | ALKT | A | 214 | · | · | 35,973 Direct | +0.60% | Acquired | (price as of 2026-10-05) |
| June 1, 2021 | ASPN | A | 2,489 | · | · | 66,532 Direct | +3.89% | Acquired | (price as of 2026-10-05) |
| June 1, 2021 | ASPN | A | 3,088 | · | · | 3,088 Direct | · | Acquired | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 81,126 | · | · | 81,126 Indirect | · | Acquired | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 1,875,000 | · | · | 1,956,126 Indirect | +2311.22% | Acquired | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 9,131,172 | · | · | 11,087,298 Indirect | +466.80% | Acquired | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 1,520,763 | · | · | 12,608,061 Indirect | +13.72% | Acquired | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 35,759 | · | · | 35,759 Direct | · | Acquired | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 81,126 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 1,875,000 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 9,131,172 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 1,520,763 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 16, 2021 | ALKT | C | 35,759 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| June 18, 2020 | ASPN | A | 9,817 | · | · | 9,817 Direct | · | Acquired | (price as of 2026-10-05) |
| June 18, 2020 | ASPN | A | 7,511 | · | · | 64,043 Direct | +13.29% | Acquired | (price as of 2026-10-05) |
| June 19, 2019 | ASPN | A | 11,950 | · | · | 11,950 Direct | · | Acquired | (price as of 2026-10-05) |
| June 19, 2019 | ASPN | A | 8,388 | · | · | 56,532 Direct | +17.42% | Acquired | (price as of 2026-10-05) |
| June 20, 2018 | ASPN | A | 13,517 | · | · | 13,517 Direct | · | Acquired | (price as of 2026-10-05) |
| June 20, 2018 | ASPN | A | 9,677 | · | · | 48,144 Direct | +25.16% | Acquired | (price as of 2026-10-05) |
| June 14, 2017 | ASPN | A | 17,019 | · | · | 17,019 Direct | · | Acquired | (price as of 2026-10-05) |
| June 14, 2017 | ASPN | A | 12,289 | · | · | 38,467 Direct | +46.94% | Acquired | (price as of 2026-10-05) |
| June 24, 2016 | ASPN | A | 14,799 | · | · | 14,799 Direct | · | Acquired | (price as of 2026-10-05) |
| June 24, 2016 | ASPN | A | 10,736 | · | · | 26,178 Direct | +69.52% | Acquired | (price as of 2026-10-05) |
| June 17, 2015 | ASPN | A | 10,228 | · | · | 10,228 Direct | · | Acquired | (price as of 2026-10-05) |
| June 17, 2015 | ASPN | A | 7,715 | · | · | 15,442 Direct | +99.84% | Acquired | (price as of 2026-10-05) |
| June 12, 2014 | ASPN | A | 7,727 | · | · | 7,727 Direct | · | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| May 13, 2026 | ASPN | Stock Options (Right to Buy) | Common Stock | $5.40 | May 13, 2036 | 8,706 | Acquired |
| April 30, 2025 | ASPN | Stock Options (Right to Buy) | Common Stock | $5.40 | April 30, 2035 | 9,105 | Acquired |
| May 30, 2024 | ASPN | Stock Options (Right to Buy) | Common Stock | $29.50 | May 30, 2034 | 1,657 | Acquired |
| June 1, 2023 | ASPN | Stock Option (Right-to-Buy) | Common Stock | $6.81 | June 1, 2033 | 7,712 | Acquired |
| June 2, 2022 | ASPN | Stock Option (Right-to-Buy) | Common Stock | $18.89 | June 2, 2032 | 3,178 | Acquired |
| June 1, 2021 | ASPN | Stock Option (Right-to-Buy) | Common Stock | $20.49 | June 1, 2031 | 3,088 | Acquired |
| April 16, 2021 | ALKT | Series A Preferred Stock | Common Stock | · | · | 81,126 | Disposed |
| April 16, 2021 | ALKT | Series B Preferred Stock | Common Stock | · | · | 1,875,000 | Disposed |
| April 16, 2021 | ALKT | Series C Preferred Stock | Common Stock | · | · | 9,131,172 | Disposed |
| April 16, 2021 | ALKT | Series E Preferred Stock | Common Stock | · | · | 1,520,763 | Disposed |
| April 16, 2021 | ALKT | Series E Preferred Stock | Common Stock | · | · | 35,759 | Disposed |
| June 18, 2020 | ASPN | Stock Option (right to buy) | Common Stock | $6.79 | June 18, 2030 | 9,817 | Acquired |
| June 19, 2019 | ASPN | Stock Option (right to buy) | Common Stock | $6.08 | June 19, 2029 | 11,950 | Acquired |
| June 20, 2018 | ASPN | Stock Option (right to buy) | Common Stock | $5.27 | June 28, 2028 | 13,517 | Acquired |
| June 14, 2017 | ASPN | Stock Option (right to buy) | Common Stock | $4.15 | June 14, 2027 | 17,019 | Acquired |
| June 24, 2016 | ASPN | Stock Option (right to buy) | Common Stock | $4.75 | June 24, 2026 | 14,799 | Acquired |
| June 17, 2015 | ASPN | Stock Option (right to buy) | Common Stock | $6.61 | June 17, 2025 | 10,228 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 13, 2021 | ALKT | Series A Preferred Stock | 81,126 | Indirect |
| April 13, 2021 | ALKT | Series B Preferred Stock | 1,875,000 | Indirect |
| April 13, 2021 | ALKT | Series C Preferred Stock | 9,131,172 | Indirect |
| April 13, 2021 | ALKT | Series E Preferred Stock | 1,520,763 | Indirect |
| April 13, 2021 | ALKT | Series E Preferred Stock | 35,759 | Direct |