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Jing L. Marantz
Insider
First SEC filing: June 15, 2026 · Latest: June 15, 2026
Insider at
Insider transactions
0 buys (P)
2 sells (S)
Net: $-451,320
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 5, 2026 | ARCT | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Feb. 17, 2026 | SRRK | S | 4,157 | $46.53 | $193,425 | 126,012 Direct | -3.19% | Disposed | -8.8% (price as of 2026-10-06) |
| Feb. 9, 2026 | SRRK | A | 34,482 | · | · | 130,169 Direct | +36.04% | Acquired | (price as of 2026-10-06) |
| Jan. 16, 2026 | SRRK | S | 5,798 | $44.48 | $257,895 | 95,687 Direct | -5.71% | Disposed | -4.6% (price as of 2026-10-06) |
| June 9, 2025 | ARCT | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-06) |
| March 10, 2025 | SRRK | A | 34,285 | · | · | 101,485 Direct | +51.02% | Acquired | (price as of 2026-10-06) |
| March 10, 2025 | SRRK | A | 45,715 | · | · | 45,715 Direct | · | Acquired | (price as of 2026-10-06) |
| Jan. 16, 2025 | SRRK | S | 5,655 | $44.20 | $249,951 | 67,200 Direct | -7.76% | Disposed | -4.0% (price as of 2026-10-06) |
| Nov. 25, 2024 | SRRK | M 10b5-1 | 6,375 | · | · | 130,000 Direct | -4.67% | Disposed | (price as of 2026-10-06) |
| Nov. 25, 2024 | SRRK | S 10b5-1 | 200 | $40.72 | $8,144 | 72,855 Direct | -0.27% | Disposed | 4.2% (price as of 2026-10-06) |
| Nov. 25, 2024 | SRRK | S 10b5-1 | 3,075 | $39.93 | $122,785 | 73,055 Direct | -4.04% | Disposed | 6.3% (price as of 2026-10-06) |
| Nov. 25, 2024 | SRRK | S 10b5-1 | 2,100 | $39.25 | $82,425 | 76,130 Direct | -2.68% | Disposed | 8.2% (price as of 2026-10-06) |
| Nov. 25, 2024 | SRRK | S 10b5-1 | 1,000 | $38.04 | $38,040 | 78,230 Direct | -1.26% | Disposed | 11.6% (price as of 2026-10-06) |
| Nov. 25, 2024 | SRRK | M 10b5-1 | 6,375 | $8.59 | $54,761 | 79,230 Direct | +8.75% | Acquired | 394.2% (price as of 2026-10-06) |
| Nov. 22, 2024 | SRRK | M 10b5-1 | 2,145 | · | · | 136,375 Direct | -1.55% | Disposed | (price as of 2026-10-06) |
| Nov. 22, 2024 | SRRK | S 10b5-1 | 2,145 | $30.01 | $64,371 | 72,855 Direct | -2.86% | Disposed | 41.5% (price as of 2026-10-06) |
| Nov. 22, 2024 | SRRK | M 10b5-1 | 2,145 | $8.59 | $18,426 | 75,000 Direct | +2.94% | Acquired | 394.2% (price as of 2026-10-06) |
| Nov. 11, 2024 | SRRK | M 10b5-1 | 2,105 | $8.59 | $18,082 | 74,960 Direct | +2.89% | Acquired | 394.2% (price as of 2026-10-06) |
| Nov. 11, 2024 | SRRK | S 10b5-1 | 2,105 | $30.00 | $63,150 | 72,855 Direct | -2.81% | Disposed | 41.5% (price as of 2026-10-06) |
| Nov. 11, 2024 | SRRK | M 10b5-1 | 2,105 | · | · | 138,520 Direct | -1.50% | Disposed | (price as of 2026-10-06) |
| Oct. 7, 2024 | SRRK | M | 109,375 | · | · | 140,625 Direct | -43.75% | Disposed | (price as of 2026-10-06) |
| Oct. 7, 2024 | SRRK | S 10b5-1 | 39,375 | $30.06 | $1,183,612 | 72,855 Direct | -35.08% | Disposed | 41.2% (price as of 2026-10-06) |
| Oct. 7, 2024 | SRRK | S 10b5-1 | 2,552 | $26.22 | $66,913 | 112,230 Direct | -2.22% | Disposed | 61.9% (price as of 2026-10-06) |
| Oct. 7, 2024 | SRRK | S 10b5-1 | 67,448 | $25.59 | $1,725,994 | 114,782 Direct | -37.01% | Disposed | 65.9% (price as of 2026-10-06) |
| Oct. 7, 2024 | SRRK | M 10b5-1 | 109,375 | $8.59 | $939,531 | 182,230 Direct | +150.13% | Acquired | 394.2% (price as of 2026-10-06) |
| June 14, 2024 | ARCT | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-06) |
| June 14, 2024 | ARCT | M | 3,131 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| June 14, 2024 | ARCT | M | 3,131 | · | · | 3,131 Direct | · | Acquired | (price as of 2026-10-06) |
| Feb. 12, 2024 | SRRK | A | 72,855 | · | · | 72,855 Direct | · | Acquired | (price as of 2026-10-06) |
| Feb. 12, 2024 | SRRK | A | 97,145 | · | · | 97,145 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 1, 2023 | ARCT | A | 3,131 | · | · | 3,131 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 1, 2023 | ARCT | A | 11,869 | · | · | 11,869 Direct | · | Acquired | (price as of 2026-10-06) |
| Nov. 14, 2022 | SRRK | A | 250,000 | · | · | 250,000 Direct | · | Acquired | (price as of 2026-10-06) |
| June 23, 2022 | ARCT | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Jan. 31, 2022 | KRYS | A | 205,000 | · | · | 205,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 7, 2021 | ARCT | A | 6,699 | · | · | 6,699 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 7, 2021 | ARCT | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-06) |
| June 30, 2021 | KRYS | A | 6,800 | · | · | 6,800 Direct | · | Acquired | (price as of 2026-10-06) |
| Jan. 4, 2021 | KRYS | A | 13,600 | · | · | 13,600 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 5, 2026 | ARCT | Stock option (right to buy) [F1] | Common Stock | $7.30 | June 5, 2036 | 15,000 | Acquired |
| June 9, 2025 | ARCT | Stock option (right to buy) [F1] | Common Stock | $12.54 | June 9, 2035 | 15,000 | Acquired |
| March 10, 2025 | SRRK | Stock Option (Right to Buy) | Common Stock | $35.15 | March 10, 2035 | 45,715 | Acquired |
| Nov. 25, 2024 | SRRK | Stock Option (Right to Buy) | Common Stock | $8.59 | Nov. 14, 2032 | 6,375 | Disposed |
| Nov. 22, 2024 | SRRK | Stock Option (Right to Buy) | Common Stock | $8.59 | Nov. 14, 2032 | 2,145 | Disposed |
| Nov. 11, 2024 | SRRK | Stock Option (Right to Buy) | Common Stock | $8.59 | Nov. 14, 2032 | 2,105 | Disposed |
| Oct. 7, 2024 | SRRK | Stock Option (Right to Buy) | Common Stock | $8.59 | Nov. 14, 2032 | 109,375 | Disposed |
| June 14, 2024 | ARCT | Stock option (right to buy) [F3] | Common Stock | $31.00 | June 14, 2034 | 15,000 | Acquired |
| June 14, 2024 | ARCT | Deferred Stock Units [F2] | Common Stock | $0.00 | · | 3,131 | Disposed |
| Feb. 12, 2024 | SRRK | Stock Option (Right to Buy) | Common Stock | $15.75 | Feb. 12, 2034 | 97,145 | Acquired |
| Aug. 1, 2023 | ARCT | Deferred Stock Units | Common Stock | · | · | 3,131 | Acquired |
| Aug. 1, 2023 | ARCT | Stock option (right to buy) | Common Stock | $34.92 | Aug. 1, 2033 | 11,869 | Acquired |
| Nov. 14, 2022 | SRRK | Stock Option (right to buy) | Common Stock | $8.59 | Nov. 14, 2032 | 250,000 | Acquired |
| June 23, 2022 | ARCT | Stock Option (right to buy) | Common Stock | $16.02 | June 23, 2032 | 15,000 | Acquired |
| Jan. 31, 2022 | KRYS | Stock Option (Right to Buy) | Common Stock | $59.00 | Jan. 31, 2032 | 205,000 | Acquired |
| Dec. 7, 2021 | ARCT | Stock option (right to buy) | Common Stock | $38.54 | Dec. 6, 2031 | 6,699 | Acquired |
| Dec. 7, 2021 | ARCT | Stock option (right to buy) | Common Stock | $38.54 | Dec. 6, 2031 | 20,000 | Acquired |
| June 30, 2021 | KRYS | Stock Option (Right to Buy) | Common Stock | $68.00 | June 30, 2031 | 6,800 | Acquired |
| Jan. 4, 2021 | KRYS | Stock Option (Right to Buy) | Common Stock | $59.42 | Jan. 4, 2031 | 13,600 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).