Keith C Kummerfeld
Insider
First SEC filing: June 12, 2020 · Latest: June 12, 2020
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
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 15, 2023 | ARCT | A | 30,000 | · | · | 30,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 14, 2023 | ARCT | M | 1,031 | · | · | 7,938 Direct | -11.50% | Disposed | (price as of 2026-10-02) |
| July 14, 2023 | ARCT | M | 1,437 | · | · | 7,126 Direct | -16.78% | Disposed | (price as of 2026-10-02) |
| July 14, 2023 | ARCT | M | 4,500 | · | · | 21,000 Direct | -17.65% | Disposed | (price as of 2026-10-02) |
| July 14, 2023 | ARCT | S 10b5-1 | 6,968 | $35.00 | $243,880 | 950 Direct | -88.00% | Disposed | -62.8% (price as of 2026-10-02) |
| July 14, 2023 | ARCT | M | 1,031 | $14.12 | $14,558 | 7,918 Direct | +14.97% | Acquired | -7.7% (price as of 2026-10-02) |
| July 14, 2023 | ARCT | M | 1,437 | $4.99 | $7,171 | 6,887 Direct | +26.37% | Acquired | 161.1% (price as of 2026-10-02) |
| July 14, 2023 | ARCT | M | 4,500 | $9.04 | $40,680 | 5,450 Direct | +473.68% | Acquired | 44.1% (price as of 2026-10-02) |
| April 18, 2023 | ARCT | S 10b5-1 | 6,968 | $28.18 | $196,358 | 950 Direct | -88.00% | Disposed | -53.8% (price as of 2026-10-02) |
| April 18, 2023 | ARCT | M | 1,437 | $4.99 | $7,171 | 7,918 Direct | +22.17% | Acquired | 161.1% (price as of 2026-10-02) |
| April 18, 2023 | ARCT | M | 4,500 | $9.04 | $40,680 | 6,481 Direct | +227.16% | Acquired | 44.1% (price as of 2026-10-02) |
| April 18, 2023 | ARCT | M | 1,031 | $14.12 | $14,558 | 1,981 Direct | +108.53% | Acquired | -7.7% (price as of 2026-10-02) |
| April 17, 2023 | ARCT | M | 1,437 | · | · | 8,563 Direct | -14.37% | Disposed | (price as of 2026-10-02) |
| April 17, 2023 | ARCT | M | 4,500 | · | · | 25,500 Direct | -15.00% | Disposed | (price as of 2026-10-02) |
| April 17, 2023 | ARCT | M | 1,031 | · | · | 8,969 Direct | -10.31% | Disposed | (price as of 2026-10-02) |
| Dec. 9, 2022 | ARCT | A | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 21, 2022 | ARCT | A | 33,000 | · | · | 33,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 18, 2020 | ARCT | A | 45,000 | · | · | 45,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 12, 2020 | ARCT | P | 450 | $33.33 | $14,998 | 950 Direct | +90.00% | Acquired | -60.9% (price as of 2026-10-02) |
| Feb. 18, 2020 | ARCT | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 12, 2019 | ARCT | P | 500 | $10.69 | $5,345 | 500 Direct | · | Acquired | 21.9% (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| Dec. 15, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock | $28.88 | Dec. 15, 2033 | 30,000 | Acquired |
| July 14, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock | $14.12 | Feb. 18, 2030 | 1,031 | Disposed |
| July 14, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock | $4.99 | Feb. 6, 2029 | 1,437 | Disposed |
| July 14, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock | $9.04 | July 4, 2028 | 4,500 | Disposed |
| April 17, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock | $4.99 | Feb. 6, 2029 | 1,437 | Disposed |
| April 17, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock | $9.04 | July 4, 2028 | 4,500 | Disposed |
| April 17, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock | $14.12 | Feb. 18, 2030 | 1,031 | Disposed |
| Dec. 9, 2022 | ARCT | Employee Stock Option (right to buy) | Common Stock | $16.92 | Dec. 9, 2032 | 40,000 | Acquired |
| June 21, 2022 | ARCT | Employee Stock Option (right to buy) | Common Stock | $34.57 | Dec. 10, 2031 | 33,000 | Acquired |
| Dec. 18, 2020 | ARCT | Stock Option (right to buy) | Common Stock | $99.29 | Dec. 18, 2030 | 45,000 | Acquired |
| Feb. 18, 2020 | ARCT | Stock Option (right to buy) | Common Stock | $14.12 | Feb. 18, 2030 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).