Keith C Kummerfeld
CIK 1762749 · View on SEC EDGAR ↗
Insider
First SEC filing: June 12, 2020 · Latest: June 12, 2020
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 17 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
17 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| July 14, 2023 | ARCT | S 10b5-1 | 6,968 | $35.00 | $243,880 | 950 Direct | -88.00% | Disposed | -71.6% (price as of 2026-08-19) |
| April 18, 2023 | ARCT | S 10b5-1 | 6,968 | $28.18 | $196,358 | 950 Direct | -88.00% | Disposed | -64.7% (price as of 2026-08-19) |
| June 12, 2020 | ARCT | P | 450 | $33.33 | $14,998 | 950 Direct | +90.00% | Acquired | -70.2% (price as of 2026-08-19) |
| Sept. 12, 2019 | ARCT | P | 500 | $10.69 | $5,345 | 500 Direct | — | Acquired | -7.0% (price as of 2026-08-19) |
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 (30,000) | $28.88 | Dec. 15, 2033 | 30,000 | Acquired |
| July 14, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock (1,031) | $14.12 | Feb. 18, 2030 | 1,031 | Disposed |
| July 14, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock (1,437) | $4.99 | Feb. 6, 2029 | 1,437 | Disposed |
| July 14, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock (4,500) | $9.04 | July 4, 2028 | 4,500 | Disposed |
| April 17, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock (1,437) | $4.99 | Feb. 6, 2029 | 1,437 | Disposed |
| April 17, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock (4,500) | $9.04 | July 4, 2028 | 4,500 | Disposed |
| April 17, 2023 | ARCT | Employee Stock Option (right to buy) | Common Stock (1,031) | $14.12 | Feb. 18, 2030 | 1,031 | Disposed |
| Dec. 9, 2022 | ARCT | Employee Stock Option (right to buy) | Common Stock (40,000) | $16.92 | Dec. 9, 2032 | 40,000 | Acquired |
| June 21, 2022 | ARCT | Employee Stock Option (right to buy) | Common Stock (33,000) | $34.57 | Dec. 10, 2031 | 33,000 | Acquired |
| Dec. 18, 2020 | ARCT | Stock Option (right to buy) | Common Stock (45,000) | $99.29 | Dec. 18, 2030 | 45,000 | Acquired |
| Feb. 18, 2020 | ARCT | Stock Option (right to buy) | Common Stock (10,000) | $14.12 | Feb. 18, 2030 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).