Dean J Mitchell
Insider
First SEC filing: Sept. 12, 2003 · Latest: Sept. 12, 2003
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 |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 23, 2026 | TBPH | D | 91,204 | · | · | 6,009 Direct | -93.82% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 6,009 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 6,000 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 6,000 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 6,000 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 6,000 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 28,000 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 22,044 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 23,576 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 24,258 | · | · | 0 Direct | -100.00% | Disposed | |
| Sept. 23, 2026 | TBPH | D | 13,398 | · | · | 0 Direct | -100.00% | Disposed | |
| June 12, 2026 | TBPH | A | 13,398 | · | · | 13,398 Direct | · | Acquired | |
| June 12, 2026 | TBPH | A | 6,009 | · | · | 97,213 Direct | +6.59% | Acquired | |
| June 10, 2026 | PRAX | A | 648 | · | · | 648 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2026 | PRAX | A | 1,371 | · | · | 18,622 Direct | +7.95% | Acquired | (price as of 2026-10-02) |
| Sept. 24, 2025 | PRAX | M | 1,932 | $14.36 | $27,744 | 6,932 Direct | +38.64% | Acquired | 1957.9% (price as of 2026-10-02) |
| Sept. 24, 2025 | PRAX | M | 8,566 | $44.25 | $379,046 | 15,498 Direct | +123.57% | Acquired | 567.8% (price as of 2026-10-02) |
| Sept. 24, 2025 | PRAX | M | 1,753 | $44.04 | $77,202 | 17,251 Direct | +11.31% | Acquired | 571.0% (price as of 2026-10-02) |
| Sept. 24, 2025 | PRAX | M | 1,932 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Sept. 24, 2025 | PRAX | M | 8,566 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Sept. 24, 2025 | PRAX | M | 1,753 | · | · | 8,767 Direct | -16.66% | Disposed | (price as of 2026-10-02) |
| June 26, 2025 | PRAX | A | 10,520 | · | · | 10,520 Direct | · | Acquired | (price as of 2026-10-02) |
| May 19, 2025 | TBPH | A | 10,649 | · | · | 91,204 Direct | +13.22% | Acquired | |
| May 19, 2025 | TBPH | A | 24,258 | · | · | 24,258 Direct | · | Acquired | |
| June 5, 2024 | PRAX | A | 8,566 | · | · | 8,566 Direct | · | Acquired | (price as of 2026-10-02) |
| May 8, 2024 | TBPH | A | 10,537 | · | · | 80,555 Direct | +15.05% | Acquired | |
| May 8, 2024 | TBPH | A | 23,576 | · | · | 23,576 Direct | · | Acquired | |
| March 14, 2024 | PGEN | A | 101,626 | · | · | 101,626 Direct | · | Acquired | (price as of 2026-10-02) |
| March 14, 2024 | PGEN | A | 87,412 | · | · | 87,412 Direct | · | Acquired | (price as of 2026-10-02) |
| March 14, 2024 | PGEN | A | 39,510 | $1.43 | $56,499 | 503,183 Direct | +8.52% | Acquired | 497.2% (price as of 2026-10-02) |
| March 9, 2024 | PGEN | M | 106,837 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 9, 2024 | PGEN | M | 106,837 | · | · | 463,673 Direct | +29.94% | Acquired | (price as of 2026-10-02) |
| Sept. 22, 2023 | PGEN | P | 25,000 | $1.41 | $35,250 | 356,836 Direct | +7.53% | Acquired | 505.7% (price as of 2026-10-02) |
| June 12, 2023 | PRAX | A | 28,981 | · | · | 28,981 Direct | · | Acquired | (price as of 2026-10-02) |
| May 2, 2023 | TBPH | A | 9,132 | · | · | 70,018 Direct | +15.00% | Acquired | |
| May 2, 2023 | TBPH | A | 22,044 | · | · | 22,044 Direct | · | Acquired | |
| March 24, 2023 | PRAX | P | 50,000 | $0.84 | $42,000 | 75,000 Direct | +200.00% | Acquired | 2245.3% (price as of 2026-10-02) |
| March 9, 2023 | PGEN | A | 125,489 | · | · | 125,489 Direct | · | Acquired | (price as of 2026-10-02) |
| March 9, 2023 | PGEN | A | 106,837 | · | · | 106,837 Direct | · | Acquired | (price as of 2026-10-02) |
| March 9, 2023 | PGEN | A | 48,290 | $1.17 | $56,499 | 331,836 Direct | +17.03% | Acquired | 629.9% (price as of 2026-10-02) |
| Feb. 22, 2023 | PGEN | M | 61,576 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 22, 2023 | PGEN | M | 61,576 | · | · | 283,546 Direct | +27.74% | Acquired | (price as of 2026-10-02) |
| June 8, 2022 | PRAX | P | 25,000 | $1.81 | $45,250 | 25,000 Direct | · | Acquired | 988.4% (price as of 2026-10-02) |
| May 26, 2022 | PRAX | A | 22,753 | · | · | 22,753 Direct | · | Acquired | (price as of 2026-10-02) |
| April 26, 2022 | TBPH | A | 9,852 | · | · | 60,886 Direct | +19.30% | Acquired | |
| April 26, 2022 | TBPH | A | 28,000 | · | · | 28,000 Direct | · | Acquired | |
| March 25, 2022 | PGEN | M | 16,212 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 25, 2022 | PGEN | M | 16,212 | · | · | 221,970 Direct | +7.88% | Acquired | (price as of 2026-10-02) |
| Feb. 22, 2022 | PGEN | A | 83,189 | · | · | 83,189 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 22, 2022 | PGEN | A | 61,576 | · | · | 61,576 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 22, 2022 | PGEN | A | 27,832 | $2.03 | $56,499 | 205,758 Direct | +15.64% | Acquired | 320.7% (price as of 2026-10-02) |
| June 8, 2021 | PRAX | A | 22,343 | · | · | 22,343 Direct | · | Acquired | (price as of 2026-10-02) |
| April 27, 2021 | TBPH | A | 6,000 | · | · | 6,000 Direct | · | Acquired | |
| April 27, 2021 | TBPH | A | 9,828 | · | · | 51,034 Direct | +23.85% | Acquired | |
| March 25, 2021 | PGEN | A | 22,107 | · | · | 22,107 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| March 25, 2021 | PGEN | A | 16,212 | · | · | 16,212 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| March 25, 2021 | PGEN | A | 7,328 | $7.71 | $56,499 | 177,926 Direct | +4.30% | Acquired | 10.8% (price as of 2026-10-02) |
| March 13, 2021 | PGEN | M | 62,189 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 13, 2021 | PGEN | M | 62,189 | · | · | 170,598 Direct | +57.37% | Acquired | (price as of 2026-10-02) |
| March 3, 2021 | PGEN | M | 2,968 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 3, 2021 | PGEN | M | 2,968 | $5.69 | $16,888 | 108,409 Direct | +2.81% | Acquired | 50.1% (price as of 2026-10-02) |
| June 19, 2020 | PGEN | M | 2,968 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| June 19, 2020 | PGEN | M | 2,968 | $3.17 | $9,409 | 105,441 Direct | +2.90% | Acquired | 169.4% (price as of 2026-10-02) |
| April 28, 2020 | TBPH | A | 6,000 | · | · | 6,000 Direct | · | Acquired | |
| April 28, 2020 | TBPH | A | 6,635 | · | · | 41,206 Direct | +19.19% | Acquired | |
| March 13, 2020 | PGEN | A | 96,324 | · | · | 96,324 Direct | · | Acquired | (price as of 2026-10-02) |
| March 13, 2020 | PGEN | A | 62,189 | · | · | 62,189 Direct | · | Acquired | (price as of 2026-10-02) |
| March 13, 2020 | PGEN | A | 28,109 | $2.01 | $56,499 | 102,473 Direct | +37.80% | Acquired | 324.9% (price as of 2026-10-02) |
| March 8, 2020 | PGEN | M | 24,703 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 8, 2020 | PGEN | M | 24,703 | · | · | 74,364 Direct | +49.74% | Acquired | (price as of 2026-10-02) |
| April 30, 2019 | TBPH | A | 6,000 | · | · | 6,000 Direct | · | Acquired | |
| April 30, 2019 | TBPH | A | 8,385 | · | · | 34,571 Direct | +32.02% | Acquired | |
| March 23, 2019 | PGEN | M | 7,911 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 23, 2019 | PGEN | M | 7,911 | · | · | 49,661 Direct | +18.95% | Acquired | (price as of 2026-10-02) |
| March 12, 2019 | PGEN | M | 8,906 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 12, 2019 | PGEN | M | 8,906 | $3.17 | $28,232 | 41,750 Direct | +27.12% | Acquired | 169.4% (price as of 2026-10-02) |
| March 8, 2019 | PGEN | A | 42,450 | · | · | 42,450 Direct | · | Acquired | (price as of 2026-10-02) |
| March 8, 2019 | PGEN | A | 24,703 | · | · | 32,614 Direct | +312.26% | Acquired | (price as of 2026-10-02) |
| March 8, 2019 | PGEN | A | 11,166 | $5.06 | $56,500 | 32,844 Direct | +51.51% | Acquired | 68.8% (price as of 2026-10-02) |
| May 1, 2018 | TBPH | A | 6,000 | · | · | 6,000 Direct | · | Acquired | |
| May 1, 2018 | TBPH | A | 8,186 | · | · | 26,186 Direct | +45.48% | Acquired | |
| March 23, 2018 | PGEN | A | 14,246 | · | · | 14,246 Direct | · | Acquired | (price as of 2026-10-02) |
| March 23, 2018 | PGEN | A | 7,911 | · | · | 7,911 Direct | · | Acquired | (price as of 2026-10-02) |
| March 23, 2018 | PGEN | A | 3,575 | $15.80 | $56,485 | 21,678 Direct | +19.75% | Acquired | -45.9% (price as of 2026-10-02) |
| Aug. 11, 2017 | PGEN | P | 5,000 | $18.33 | $91,650 | 18,103 Direct | +38.16% | Acquired | -53.4% (price as of 2026-10-02) |
| May 17, 2017 | TBPH | A | 6,000 | · | · | 18,000 Direct | +50.00% | Acquired | |
| March 16, 2017 | PGEN | A | 3,274 | · | · | 13,103 Direct | +33.31% | Acquired | (price as of 2026-10-02) |
| March 16, 2017 | PGEN | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 3, 2016 | TBPH | A | 6,000 | · | · | 12,000 Direct | +100.00% | Acquired | |
| March 10, 2016 | PGEN | A | 2,000 | $34.99 | $69,980 | 9,829 Direct | +25.55% | Acquired | -75.6% (price as of 2026-10-02) |
| March 10, 2016 | PGEN | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 22, 2015 | TBPH | A | 6,000 | · | · | 6,000 Direct | · | Acquired | |
| March 12, 2015 | PGEN | A | 1,474 | $47.48 | $69,986 | 7,829 Direct | +23.19% | Acquired | -82.0% (price as of 2026-10-02) |
| March 12, 2015 | PGEN | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 3, 2014 | TBPH | A | 12,000 | · | · | 12,000 Direct | · | Acquired | |
| June 3, 2014 | TBPH | A | 12,000 | · | · | 12,000 Direct | · | Acquired | |
| March 20, 2014 | PGEN | A | 2,278 | $30.72 | $69,980 | 6,355 Direct | +55.87% | Acquired | -72.2% (price as of 2026-10-02) |
| March 20, 2014 | PGEN | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2014 | PGEN | A | 27 | $27.68 | $747 | 4,077 Direct | +0.67% | Acquired | -69.1% (price as of 2026-10-02) |
| Dec. 17, 2013 | PGEN | A | 112 | $19.83 | $2,221 | 4,050 Direct | +2.84% | Acquired | -56.9% (price as of 2026-10-02) |
Showing latest 100 of 103 transactions
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 |
|---|---|---|---|---|---|---|---|
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $24.43 | April 30, 2028 | 6,000 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $23.85 | April 29, 2029 | 6,000 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $30.14 | April 27, 2030 | 6,000 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $20.35 | April 26, 2031 | 6,000 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $10.15 | April 25, 2032 | 28,000 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $10.95 | May 1, 2033 | 22,044 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $9.49 | May 7, 2034 | 23,576 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $9.39 | May 18, 2035 | 24,258 | Disposed |
| Sept. 23, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $16.64 | June 11, 2036 | 13,398 | Disposed |
| June 12, 2026 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $16.64 | June 11, 2036 | 13,398 | Acquired |
| June 10, 2026 | PRAX | Stock Option (Right to Buy) | Common Stock | $240.66 | June 10, 2036 | 648 | Acquired |
| Sept. 24, 2025 | PRAX | Stock Option (Right to Buy) | Common Stock | $14.36 | June 12, 2033 | 1,932 | Disposed |
| Sept. 24, 2025 | PRAX | Stock Option (Right to Buy) | Common Stock | $44.25 | June 5, 2034 | 8,566 | Disposed |
| Sept. 24, 2025 | PRAX | Stock Option (Right to Buy) | Common Stock | $44.04 | June 26, 2035 | 1,753 | Disposed |
| June 26, 2025 | PRAX | Stock Option (Right to Buy) | Common Stock | $44.04 | June 26, 2035 | 10,520 | Acquired |
| May 19, 2025 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $9.39 | May 18, 2035 | 24,258 | Acquired |
| June 5, 2024 | PRAX | Stock Option (Right to Buy) | Common Stock | $44.25 | June 5, 2034 | 8,566 | Acquired |
| May 8, 2024 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $9.49 | May 7, 2034 | 23,576 | Acquired |
| March 14, 2024 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $1.43 | March 14, 2034 | 101,626 | Acquired |
| March 14, 2024 | PGEN | Restricted Stock Units | Common Stock | · | · | 87,412 | Acquired |
| March 9, 2024 | PGEN | Restricted Stock Units | Common Stock | · | · | 106,837 | Disposed |
| June 12, 2023 | PRAX | Stock Option (Right to Buy) | Common Stock | $0.96 | June 12, 2033 | 28,981 | Acquired |
| May 2, 2023 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $10.95 | May 1, 2033 | 22,044 | Acquired |
| March 9, 2023 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $1.17 | March 9, 2033 | 125,489 | Acquired |
| March 9, 2023 | PGEN | Restricted Stock Units | Common Stock | · | · | 106,837 | Acquired |
| Feb. 22, 2023 | PGEN | Restricted Stock Units | Common Stock | · | · | 61,576 | Disposed |
| May 26, 2022 | PRAX | Stock Option (Right to Buy) | Common Stock | $8.38 | May 26, 2032 | 22,753 | Acquired |
| April 26, 2022 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $10.15 | April 25, 2032 | 28,000 | Acquired |
| March 25, 2022 | PGEN | Restricted Stock Units | Common Stock | · | · | 16,212 | Disposed |
| Feb. 22, 2022 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $2.03 | Feb. 22, 2032 | 83,189 | Acquired |
| Feb. 22, 2022 | PGEN | Restricted Stock Units | Common Stock | · | · | 61,576 | Acquired |
| June 8, 2021 | PRAX | Stock Option (Right to Buy) | Common Stock | $20.42 | June 8, 2031 | 22,343 | Acquired |
| April 27, 2021 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $20.35 | April 26, 2031 | 6,000 | Acquired |
| March 25, 2021 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $7.71 | March 25, 2031 | 22,107 | Disposed |
| March 25, 2021 | PGEN | Restricted Stock Units | Common Stock | · | · | 16,212 | Disposed |
| March 13, 2021 | PGEN | Restricted Stock Units | Common Stock | · | · | 62,189 | Disposed |
| March 3, 2021 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $5.69 | March 7, 2021 | 2,968 | Disposed |
| June 19, 2020 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $3.17 | June 30, 2020 | 2,968 | Disposed |
| April 28, 2020 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $30.14 | April 27, 2030 | 6,000 | Acquired |
| March 13, 2020 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $2.01 | March 13, 2030 | 96,324 | Acquired |
| March 13, 2020 | PGEN | Restricted Stock Units | Common Stock | · | · | 62,189 | Acquired |
| March 8, 2020 | PGEN | Restricted Stock Units | Common Stock | · | · | 24,703 | Disposed |
| April 30, 2019 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $23.85 | April 29, 2029 | 6,000 | Acquired |
| March 23, 2019 | PGEN | Restricted Stock Units | Common Stock | · | · | 7,911 | Disposed |
| March 12, 2019 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $3.17 | March 17, 2019 | 8,906 | Disposed |
| March 8, 2019 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $5.06 | March 8, 2029 | 42,450 | Acquired |
| March 8, 2019 | PGEN | Restricted Stock Units | Common Stock | · | · | 24,703 | Acquired |
| May 1, 2018 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $24.43 | April 30, 2028 | 6,000 | Acquired |
| March 23, 2018 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $15.80 | March 23, 2028 | 14,246 | Acquired |
| March 23, 2018 | PGEN | Restricted Stock Units | Common Stock | · | · | 7,911 | Acquired |
| March 16, 2017 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $21.38 | March 16, 2027 | 15,000 | Acquired |
| March 10, 2016 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $34.99 | March 10, 2026 | 15,000 | Acquired |
| March 12, 2015 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $47.48 | March 12, 2025 | 15,000 | Acquired |
| June 3, 2014 | TBPH | Stock Option (Right to Buy) | Common Stock | $23.51 | June 2, 2024 | 12,000 | Acquired |
| June 3, 2014 | TBPH | Stock Option (Right to Buy) | Common Stock | $23.51 | June 2, 2024 | 12,000 | Acquired |
| March 20, 2014 | PGEN | Option to Purchase Common Stock (Right to Buy) | Common Stock | $30.72 | March 20, 2024 | 15,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 8 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Oct. 15, 2020 | PRAX | Stock Option (Right to Buy) | 65,420 | Direct |
| Aug. 7, 2013 | PGEN | Common Stock | 3,851 | Direct |
| Aug. 7, 2013 | PGEN | Option to Purchase Common Stock | 8,571 | Direct |
| Aug. 7, 2013 | PGEN | Option to Purchase Common Stock | 2,857 | Direct |
| Aug. 7, 2013 | PGEN | Option to Purchase Common Stock | 2,857 | Direct |
| Aug. 7, 2013 | PGEN | Option to Purchase Common Stock | 8,571 | Direct |
| Aug. 7, 2013 | PGEN | Option to Purchase Common Stock | 2,857 | Direct |
| Aug. 7, 2013 | PGEN | Option to Purchase Common Stock | 2,857 | Direct |