William D Young
Insider
First SEC filing: March 18, 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
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 29, 2026 | AUTL | A | 47,500 | · | · | 47,500 Direct | · | Acquired | (price as of 2026-10-02) |
| June 29, 2026 | AUTL | A | 31,667 | · | · | 31,667 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2026 | PRAX | A | 648 | · | · | 648 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2026 | PRAX | A | 1,371 | · | · | 3,269 Direct | +72.23% | Acquired | (price as of 2026-10-02) |
| June 26, 2025 | PRAX | A | 10,520 | · | · | 10,520 Direct | · | Acquired | (price as of 2026-10-02) |
| June 5, 2024 | PRAX | A | 8,566 | · | · | 8,566 Direct | · | Acquired | (price as of 2026-10-02) |
| June 12, 2023 | PRAX | A | 28,981 | · | · | 28,981 Direct | · | Acquired | (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 | · | · | 78,010 Direct | +14.45% | Acquired | |
| April 26, 2022 | TBPH | A | 28,000 | · | · | 28,000 Direct | · | Acquired | |
| June 8, 2021 | PRAX | A | 22,343 | · | · | 22,343 Direct | · | Acquired | (price as of 2026-10-02) |
| May 13, 2021 | PRAX | J | 28,473 | · | · | 28,473 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 | · | · | 68,158 Direct | +16.85% | Acquired | |
| June 1, 2020 | VRTX | A | 4,527 | · | · | 4,527 Direct | · | Acquired | (price as of 2026-10-02) |
| April 28, 2020 | TBPH | A | 6,635 | · | · | 58,330 Direct | +12.83% | Acquired | |
| April 28, 2020 | TBPH | A | 6,000 | · | · | 6,000 Direct | · | Acquired | |
| Jan. 2, 2020 | VRTX | M | 20,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 2, 2020 | VRTX | S 10b5-1 | 100 | $220.08 | $22,008 | 9,311 Direct | -1.06% | Disposed | 129.3% (price as of 2026-10-02) |
| Jan. 2, 2020 | VRTX | S 10b5-1 | 10,134 | $219.37 | $2,223,096 | 9,411 Direct | -51.85% | Disposed | 130.1% (price as of 2026-10-02) |
| Jan. 2, 2020 | VRTX | S 10b5-1 | 7,266 | $218.73 | $1,589,292 | 19,545 Direct | -27.10% | Disposed | 130.8% (price as of 2026-10-02) |
| Jan. 2, 2020 | VRTX | S 10b5-1 | 2,500 | $217.72 | $544,300 | 26,811 Direct | -8.53% | Disposed | 131.8% (price as of 2026-10-02) |
| Jan. 2, 2020 | VRTX | M | 20,000 | $72.14 | $1,442,800 | 29,311 Direct | +214.80% | Acquired | 599.7% (price as of 2026-10-02) |
| Dec. 30, 2019 | VRTX | M | 30,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 30, 2019 | VRTX | S 10b5-1 | 300 | $221.16 | $66,348 | 9,311 Direct | -3.12% | Disposed | 128.2% (price as of 2026-10-02) |
| Dec. 30, 2019 | VRTX | S 10b5-1 | 500 | $220.25 | $110,125 | 9,611 Direct | -4.95% | Disposed | 129.2% (price as of 2026-10-02) |
| Dec. 30, 2019 | VRTX | S 10b5-1 | 21,798 | $218.93 | $4,772,236 | 10,111 Direct | -68.31% | Disposed | 130.5% (price as of 2026-10-02) |
| Dec. 30, 2019 | VRTX | S 10b5-1 | 7,402 | $218.05 | $1,614,006 | 31,909 Direct | -18.83% | Disposed | 131.5% (price as of 2026-10-02) |
| Dec. 30, 2019 | VRTX | M | 30,000 | $65.65 | $1,969,500 | 39,311 Direct | +322.20% | Acquired | 668.8% (price as of 2026-10-02) |
| June 1, 2019 | VRTX | A | 2,381 | · | · | 9,311 Direct | +34.36% | 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 | · | · | 51,695 Direct | +19.36% | Acquired | |
| June 1, 2018 | VRTX | A | 3,229 | · | · | 3,229 Direct | · | Acquired | (price as of 2026-10-02) |
| June 1, 2018 | VRTX | A | 1,801 | · | · | 6,930 Direct | +35.11% | Acquired | (price as of 2026-10-02) |
| May 1, 2018 | TBPH | A | 6,000 | · | · | 6,000 Direct | · | Acquired | |
| May 1, 2018 | TBPH | A | 8,186 | · | · | 43,310 Direct | +23.31% | Acquired | |
| June 1, 2017 | VRTX | M | 5,295 | · | · | 5,295 Direct | · | Acquired | (price as of 2026-10-02) |
| June 1, 2017 | VRTX | A | 2,188 | · | · | 5,129 Direct | +74.40% | Acquired | (price as of 2026-10-02) |
| May 17, 2017 | TBPH | A | 6,000 | · | · | 35,124 Direct | +20.60% | Acquired | |
| June 1, 2016 | VRTX | A | 7,073 | · | · | 7,073 Direct | · | Acquired | (price as of 2026-10-02) |
| June 1, 2016 | VRTX | A | 2,941 | $0.01 | $29 | 2,941 Direct | · | Acquired | 5047200.0% (price as of 2026-10-02) |
| May 3, 2016 | TBPH | A | 6,000 | · | · | 29,124 Direct | +25.95% | Acquired | |
| June 10, 2015 | BMRN | A | 3,300 | · | · | 3,300 Direct | · | Acquired | (price as of 2026-10-02) |
| June 10, 2015 | BMRN | A | 1,100 | · | · | 11,875 Direct | +10.21% | Acquired | (price as of 2026-10-02) |
| June 1, 2015 | VRTX | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 22, 2015 | TBPH | A | 6,000 | · | · | 23,124 Direct | +35.04% | Acquired | |
| June 4, 2014 | BMRN | A | 6,600 | · | · | 6,600 Direct | · | Acquired | (price as of 2026-10-02) |
| June 4, 2014 | BMRN | A | 2,100 | · | · | 10,775 Direct | +24.21% | 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 | |
| June 1, 2014 | VRTX | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 22, 2014 | INVA | A | 6,000 | · | · | 6,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 22, 2014 | INVA | A | 6,000 | · | · | 83,935 Direct | +7.70% | Acquired | (price as of 2026-10-02) |
| May 7, 2014 | VRTX | A | 30,000 | · | · | 30,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 7, 2014 | INVA | M | 25,806 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| April 7, 2014 | INVA | M | 25,806 | $9.69 | $250,060 | 77,935 Direct | +49.50% | Acquired | 162.5% (price as of 2026-10-02) |
| May 15, 2013 | BMRN | A | 8,500 | · | · | 8,500 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2013 | BMRN | A | 3,400 | · | · | 8,675 Direct | +64.45% | Acquired | (price as of 2026-10-02) |
| April 24, 2013 | INVA | A | 6,000 | · | · | 6,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 24, 2013 | INVA | A | 6,000 | · | · | 52,129 Direct | +13.01% | Acquired | (price as of 2026-10-02) |
| May 15, 2012 | INVA | A | 6,000 | · | · | 6,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2012 | INVA | A | 6,000 | · | · | 46,129 Direct | +14.95% | Acquired | (price as of 2026-10-02) |
| May 8, 2012 | BMRN | A | 3,400 | · | · | 5,275 Direct | +181.33% | Acquired | (price as of 2026-10-02) |
| May 8, 2012 | BMRN | A | 8,500 | · | · | 49,750 Direct | +20.61% | Acquired | (price as of 2026-10-02) |
| May 12, 2011 | BMRN | A | 11,250 | · | · | 41,250 Direct | +37.50% | Acquired | (price as of 2026-10-02) |
| May 12, 2011 | BMRN | A | 1,875 | · | · | 1,875 Direct | · | Acquired | (price as of 2026-10-02) |
| April 27, 2011 | INVA | A | 6,000 | · | · | 6,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 27, 2011 | INVA | A | 6,000 | · | · | 40,129 Direct | +17.58% | Acquired | (price as of 2026-10-02) |
| March 7, 2011 | INVA | M | 10,752 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 7, 2011 | INVA | S | 5,376 | $22.31 | $119,939 | 34,129 Direct | -13.61% | Disposed | 14.0% (price as of 2026-10-02) |
| March 7, 2011 | INVA | M | 10,752 | $8.52 | $91,607 | 39,505 Direct | +37.39% | Acquired | 198.6% (price as of 2026-10-02) |
| Feb. 18, 2011 | INVA | M | 10,752 | · | · | 10,752 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| Feb. 18, 2011 | INVA | S | 5,376 | $23.22 | $124,831 | 28,753 Direct | -15.75% | Disposed | 9.6% (price as of 2026-10-02) |
| Feb. 18, 2011 | INVA | M | 10,752 | $8.52 | $91,607 | 34,129 Direct | +45.99% | Acquired | 198.6% (price as of 2026-10-02) |
| Dec. 10, 2010 | INVA | M | 10,754 | · | · | 21,504 Direct | -33.34% | Disposed | (price as of 2026-10-02) |
| Dec. 10, 2010 | INVA | S | 5,377 | $26.64 | $143,243 | 23,377 Direct | -18.70% | Disposed | -4.5% (price as of 2026-10-02) |
| Dec. 10, 2010 | INVA | M | 10,754 | $8.52 | $91,624 | 28,754 Direct | +59.74% | Acquired | 198.6% (price as of 2026-10-02) |
| Sept. 22, 2010 | BMRN | A | 30,000 | $22.70 | $681,000 | 30,000 Direct | · | Acquired | 151.9% (price as of 2026-10-02) |
| April 27, 2010 | INVA | A | 6,000 | · | · | 6,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 27, 2010 | INVA | A | 6,000 | · | · | 18,000 Direct | +50.00% | Acquired | (price as of 2026-10-02) |
| April 24, 2009 | INVA | A | 6,000 | · | · | 6,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 24, 2009 | INVA | A | 6,000 | · | · | 12,000 Direct | +100.00% | Acquired | (price as of 2026-10-02) |
| April 22, 2008 | INVA | A | 6,000 | · | · | 6,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 25, 2007 | INVA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 26, 2006 | INVA | A | 12,903 | · | · | 12,903 Direct | · | Acquired | (price as of 2026-10-02) |
| June 30, 2005 | INVA | A | 12,903 | · | · | 12,903 Direct | · | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| June 29, 2026 | AUTL | Share Option (Right to Buy) | American Depositary Shares | $1.61 | June 29, 2036 | 47,500 | Acquired |
| June 29, 2026 | AUTL | Restricted Share Units | American Depositary Shares | · | · | 31,667 | Acquired |
| June 10, 2026 | PRAX | Stock Option (Right to Buy) | Common Stock | $240.66 | June 10, 2036 | 648 | Acquired |
| June 26, 2025 | PRAX | Stock Option (Right to Buy) | Common Stock | $44.04 | June 26, 2035 | 10,520 | Acquired |
| June 5, 2024 | PRAX | Stock Option (Right to Buy) | Common Stock | $44.25 | June 5, 2034 | 8,566 | Acquired |
| June 12, 2023 | PRAX | Stock Option (Right to Buy) | Common Stock | $0.96 | June 12, 2033 | 28,981 | Acquired |
| 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 |
| 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 |
| June 1, 2020 | VRTX | Stock Option (Right to Buy) | Common Stock | $286.27 | May 31, 2030 | 4,527 | Acquired |
| April 28, 2020 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $30.14 | April 27, 2030 | 6,000 | Acquired |
| Jan. 2, 2020 | VRTX | Stock Option (Right to Buy) | Common Stock | $72.14 | May 31, 2024 | 20,000 | Disposed |
| Dec. 30, 2019 | VRTX | Stock Option (Right to Buy) | Common Stock | $65.65 | May 6, 2024 | 30,000 | Disposed |
| April 30, 2019 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $23.85 | April 29, 2029 | 6,000 | Acquired |
| June 1, 2018 | VRTX | Stock Option (Right to Buy) | Common Stock | $152.74 | May 31, 2028 | 3,229 | Acquired |
| May 1, 2018 | TBPH | Share Option (Right to Buy) | Ordinary Shares | $24.43 | April 30, 2028 | 6,000 | Acquired |
| June 1, 2017 | VRTX | Stock Option (Right to Buy) | Common Stock | $125.71 | May 31, 2027 | 5,295 | Acquired |
| June 1, 2016 | VRTX | Stock Option (Right to Buy) | Common Stock | $93.51 | May 31, 2026 | 7,073 | Acquired |
| June 10, 2015 | BMRN | Stock Option (right to buy) | Common Stock | $122.27 | June 9, 2025 | 3,300 | Acquired |
| June 1, 2015 | VRTX | Stock Option | Common Stock | $127.54 | May 31, 2025 | 20,000 | Acquired |
| June 4, 2014 | BMRN | Stock Option (right to buy) | Common Stock | $63.10 | June 3, 2024 | 6,600 | 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 |
| June 1, 2014 | VRTX | Stock Option | Common Stock | $72.14 | May 31, 2024 | 20,000 | Acquired |
| May 22, 2014 | INVA | Stock Option (Right to Buy) | Common Stock | $28.54 | May 21, 2024 | 6,000 | Acquired |
| May 7, 2014 | VRTX | Stock Option (right to buy) | Common Stock | $65.65 | May 6, 2024 | 30,000 | Acquired |
| April 7, 2014 | INVA | Stock Option (Right to Buy) | Common Stock | $9.69 | April 27, 2014 | 25,806 | Disposed |
| May 15, 2013 | BMRN | Stock Option (right to buy) | Common Stock | $67.81 | May 14, 2023 | 8,500 | Acquired |
| April 24, 2013 | INVA | Stock Option (Right to Buy) | Common Stock | $30.54 | April 23, 2023 | 6,000 | Acquired |
| May 15, 2012 | INVA | Stock Option (Right to Buy) | Common Stock | $21.62 | May 14, 2022 | 6,000 | Acquired |
| May 8, 2012 | BMRN | Stock Option (right to buy) | Common Stock | $37.46 | May 7, 2022 | 8,500 | Acquired |
| May 12, 2011 | BMRN | Stock Option (right to buy) | Common Stock | $26.49 | May 11, 2021 | 11,250 | Acquired |
| April 27, 2011 | INVA | Stock Option (Right to Buy) | Common Stock | $28.50 | April 26, 2021 | 6,000 | Acquired |
| March 7, 2011 | INVA | Stock Option (Right to Buy) | Common Stock | $8.52 | April 7, 2011 | 10,752 | Disposed |
| Feb. 18, 2011 | INVA | Stock Option (Right to Buy) | Common Stock | $8.52 | April 7, 2011 | 10,752 | Disposed |
| Dec. 10, 2010 | INVA | Stock Option (Right to Buy) | Common Stock | $8.52 | April 7, 2011 | 10,754 | Disposed |
| Sept. 22, 2010 | BMRN | Stock Option (right to buy) | Common Stock | $22.70 | Sept. 21, 2020 | 30,000 | Acquired |
| April 27, 2010 | INVA | Stock Option (Right to Buy) | Common Stock | $14.89 | April 26, 2020 | 6,000 | Acquired |
| April 24, 2009 | INVA | Stock Option (Right to Buy) | Common Stock | $14.98 | April 23, 2019 | 6,000 | Acquired |
| April 25, 2007 | INVA | Stock Option (Right to Buy) | Common Stock | $33.25 | April 24, 2017 | 15,000 | Acquired |
| April 26, 2006 | INVA | Stock Option (Right to Buy) | Common Stock | $27.56 | April 25, 2016 | 12,903 | Acquired |
| June 30, 2005 | INVA | Stock Option (Right to Buy) | Common Stock | $17.00 | June 29, 2015 | 12,903 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 11 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 18, 2026 | AUTL | Share Option (right to buy) | 25,000 | Direct |
| March 18, 2026 | AUTL | Share Option (right to buy) | 20,000 | Direct |
| March 18, 2026 | AUTL | Share Option (right to buy) | 105,000 | Direct |
| March 18, 2026 | AUTL | Share Option (right to buy) | 80,000 | Direct |
| March 18, 2026 | AUTL | Share Option (right to buy) | 80,000 | Direct |
| Oct. 15, 2020 | PRAX | Stock Options (Right to Buy) | 27,980 | Direct |
| Oct. 15, 2020 | PRAX | Stock Options (Right to Buy) | 8,754 | Direct |
| Oct. 15, 2020 | PRAX | Stock Options (Right to Buy) | 65,420 | Direct |
| Sept. 24, 2010 | BMRN | No securities owned | 0 | Direct |
| Oct. 4, 2004 | INVA | Stock Option (right to buy) | 32,258 | Direct |
| Oct. 4, 2004 | INVA | Stock Option (right to buy) | 25,806 | Direct |