Mitchell W Kitayama
Insider
First SEC filing: June 12, 2026 · Latest: June 12, 2026
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 31, 2026 | ASTH | D | 8,500 | $37.09 | $315,265 | 24,337 Direct | -25.89% | Disposed | -0.8% (price as of 2026-10-05) |
| June 10, 2026 | ASTH | A | 4,991 | · | · | 32,837 Direct | +17.92% | Acquired | (price as of 2026-10-05) |
| Nov. 7, 2025 | ASTH | M | 12,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Nov. 7, 2025 | ASTH | M | 12,000 | $18.20 | $218,400 | 27,846 Direct | +75.73% | Acquired | 102.3% (price as of 2026-10-05) |
| Sept. 15, 2025 | ASTH | M | 8,000 | · | · | 12,000 Direct | -40.00% | Disposed | (price as of 2026-10-05) |
| Sept. 15, 2025 | ASTH | D | 5,214 | $30.23 | $157,619 | 15,846 Direct | -24.76% | Disposed | 21.8% (price as of 2026-10-05) |
| Sept. 15, 2025 | ASTH | D | 8,000 | $30.23 | $241,840 | 21,060 Direct | -27.53% | Disposed | 21.8% (price as of 2026-10-05) |
| Sept. 15, 2025 | ASTH | M | 8,000 | $18.20 | $145,600 | 29,060 Direct | +37.99% | Acquired | 102.3% (price as of 2026-10-05) |
| June 11, 2025 | ASTH | A | 6,449 | · | · | 21,060 Direct | +44.14% | Acquired | (price as of 2026-10-05) |
| Dec. 10, 2024 | ASTH | D | 5,100 | $43.09 | $219,759 | 14,611 Direct | -25.87% | Disposed | -14.6% (price as of 2026-10-05) |
| Nov. 22, 2024 | ASTH | M | 3,409 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Nov. 22, 2024 | ASTH | F | 1,490 | $42.11 | $62,744 | 19,711 Direct | -7.03% | Disposed | -12.6% (price as of 2026-10-05) |
| Nov. 22, 2024 | ASTH | M | 3,409 | $18.41 | $62,760 | 21,201 Direct | +19.16% | Acquired | 99.9% (price as of 2026-10-05) |
| Sept. 10, 2024 | ASTH | M | 11,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Sept. 10, 2024 | ASTH | F | 3,522 | $47.93 | $168,809 | 17,792 Direct | -16.52% | Disposed | -23.2% (price as of 2026-10-05) |
| Sept. 10, 2024 | ASTH | M | 11,000 | $15.35 | $168,850 | 21,314 Direct | +106.65% | Acquired | 139.8% (price as of 2026-10-05) |
| Aug. 13, 2024 | ASTH | A | 3,564 | · | · | 10,314 Direct | +52.80% | Acquired | (price as of 2026-10-05) |
| Dec. 15, 2023 | ASTH | A | 6,750 | · | · | 6,750 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 6, 2023 | ASTH | M | 7,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Dec. 6, 2023 | ASTH | D | 7,500 | $33.49 | $251,175 | 0 Direct | -100.00% | Disposed | 9.9% (price as of 2026-10-05) |
| Dec. 6, 2023 | ASTH | M | 7,500 | $18.11 | $135,825 | 7,500 Direct | · | Acquired | 103.3% (price as of 2026-10-05) |
| Jan. 20, 2022 | ASTH | A | 8,500 | · | · | 8,500 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 11, 2020 | ASTH | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 5, 2020 | ASTH | A | 3,409 | · | · | 21,909 Direct | +18.43% | Acquired | (price as of 2026-10-05) |
| Feb. 5, 2020 | ASTH | J | 2,048 | · | · | 18,500 Direct | -9.97% | Disposed | (price as of 2026-10-05) |
| Feb. 5, 2020 | ASTH | A | 3,550 | · | · | 22,050 Direct | +19.19% | Acquired | (price as of 2026-10-05) |
| Nov. 25, 2019 | ASTH | A | 2,048 | · | · | 20,548 Direct | +11.07% | Acquired | (price as of 2026-10-05) |
| Oct. 11, 2019 | ASTH | A | 11,000 | · | · | 18,500 Direct | +146.67% | Acquired | (price as of 2026-10-05) |
| Jan. 11, 2019 | ASTH | A | 7,500 | · | · | 7,500 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 11, 2019 | ASTH | A | 7,500 | · | · | 7,500 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 |
|---|---|---|---|---|---|---|---|
| Nov. 7, 2025 | ASTH | Stock Option (right to buy) | Common Stock | $18.20 | Nov. 11, 2025 | 12,000 | Disposed |
| Sept. 15, 2025 | ASTH | Stock Option (right to buy) | Common Stock | $18.20 | Nov. 11, 2025 | 8,000 | Disposed |
| Nov. 22, 2024 | ASTH | Stock Option (right to buy) | Common Stock | $18.41 | Nov. 25, 2024 | 3,409 | Disposed |
| Sept. 10, 2024 | ASTH | Stock Option (right to buy) | Common Stock | $15.35 | Oct. 11, 2024 | 11,000 | Disposed |
| Dec. 6, 2023 | ASTH | Stock Option (right to buy) | Common Stock | $18.11 | Jan. 11, 2024 | 7,500 | Disposed |
| Jan. 20, 2022 | ASTH | Stock Option (right to buy) | Common Stock | $53.01 | Jan. 18, 2025 | 8,500 | Acquired |
| Nov. 11, 2020 | ASTH | Stock Option (right to buy) | Common Stock | $18.20 | Nov. 11, 2025 | 20,000 | Acquired |
| Feb. 5, 2020 | ASTH | Stock Option (right to buy) | Common Stock | · | Nov. 25, 2024 | 3,409 | Acquired |
| Feb. 5, 2020 | ASTH | Stock Option (right to buy) | Common Stock | · | Nov. 25, 2024 | 2,048 | Disposed |
| Feb. 5, 2020 | ASTH | Stock Option (right to buy) | Common Stock | · | Nov. 25, 2024 | 3,550 | Acquired |
| Nov. 25, 2019 | ASTH | Stock Options | Common Stock | $17.57 | Nov. 25, 2024 | 2,048 | Acquired |
| Oct. 11, 2019 | ASTH | Stock Options | Common Stock | $15.35 | Oct. 11, 2024 | 11,000 | Acquired |
| Jan. 11, 2019 | ASTH | Stock Options | Common Stock | $18.11 | Jan. 11, 2024 | 7,500 | Acquired |
| Jan. 11, 2019 | ASTH | Options | Common Stock | $18.11 | Dec. 31, 2023 | 7,500 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).