Daniel G Welch
Insider
First SEC filing: Feb. 2, 2023 · Latest: Feb. 2, 2023
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 17, 2026 | GPCR | A | 39,453 | · | · | 39,453 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2026 | PRTA | A | 27,000 | · | · | 27,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 14, 2026 | RARE | A | 14,058 | · | · | 14,058 Direct | · | Acquired | (price as of 2026-10-02) |
| May 14, 2026 | RARE | A | 7,751 | · | · | 40,441 Direct | +23.71% | Acquired | (price as of 2026-10-02) |
| June 23, 2025 | GPCR | A | 51,804 | · | · | 51,804 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2025 | RARE | A | 10,787 | · | · | 10,787 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2025 | RARE | A | 5,740 | · | · | 32,690 Direct | +21.30% | Acquired | (price as of 2026-10-02) |
| May 14, 2025 | PRTA | A | 20,183 | · | · | 20,183 Direct | · | Acquired | (price as of 2026-10-02) |
| June 25, 2024 | GPCR | A | 37,500 | · | · | 37,500 Direct | · | Acquired | (price as of 2026-10-02) |
| June 18, 2024 | RARE | A | 9,900 | · | · | 9,900 Direct | · | Acquired | (price as of 2026-10-02) |
| June 18, 2024 | RARE | A | 5,345 | · | · | 26,950 Direct | +24.74% | Acquired | (price as of 2026-10-02) |
| May 24, 2024 | NUVB | M | 293,203 | $1.74 | $510,173 | 293,203 Direct | · | Acquired | 195.4% (price as of 2026-10-02) |
| May 24, 2024 | NUVB | M | 366,744 | $1.64 | $601,460 | 659,947 Direct | +125.08% | Acquired | 213.4% (price as of 2026-10-02) |
| May 24, 2024 | NUVB | M | 293,203 | · | · | 19,547 Direct | -93.75% | Disposed | (price as of 2026-10-02) |
| May 24, 2024 | NUVB | M | 366,744 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 15, 2024 | PRTA | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2024 | PRTA | A | 132,000 | · | · | 132,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 3, 2023 | GPCR | J | 205,500 | $7.97 | $1,637,835 | 205,500 Indirect | · | Acquired | 247.2% (price as of 2026-10-02) |
| Aug. 3, 2023 | GPCR | J | 205,500 | $7.97 | $1,637,835 | 205,500 Indirect | · | Acquired | 247.2% (price as of 2026-10-02) |
| Aug. 3, 2023 | GPCR | J | 411,000 | $7.97 | $3,275,670 | 768,122 Direct | -34.86% | Disposed | 247.2% (price as of 2026-10-02) |
| June 7, 2023 | RARE | A | 7,110 | · | · | 7,110 Direct | · | Acquired | (price as of 2026-10-02) |
| June 7, 2023 | RARE | A | 3,860 | · | · | 21,605 Direct | +21.75% | Acquired | (price as of 2026-10-02) |
| May 15, 2023 | NUVB | A | 366,744 | · | · | 366,744 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 7, 2023 | GPCR | C | 123,508 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 7, 2023 | GPCR | C | 123,508 | · | · | 123,508 Indirect | · | Acquired | (price as of 2026-10-02) |
| June 24, 2022 | RARE | A | 6,245 | · | · | 6,245 Direct | · | Acquired | (price as of 2026-10-02) |
| June 24, 2022 | RARE | A | 3,300 | · | · | 17,745 Direct | +22.85% | Acquired | (price as of 2026-10-02) |
| May 16, 2022 | NUVB | A | 140,713 | · | · | 140,713 Direct | · | Acquired | (price as of 2026-10-02) |
| May 16, 2022 | NUVB | A | 118,784 | · | · | 118,784 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 29, 2021 | NUVB | A | 45,229 | · | · | 45,229 Direct | · | Acquired | (price as of 2026-10-02) |
| June 24, 2021 | RARE | A | 4,125 | · | · | 4,125 Direct | · | Acquired | (price as of 2026-10-02) |
| June 24, 2021 | RARE | A | 2,145 | · | · | 14,445 Direct | +17.44% | Acquired | (price as of 2026-10-02) |
| Feb. 10, 2021 | NUVB | A | 312,750 | · | · | 312,750 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 10, 2021 | NUVB | A | 86,184 | · | · | 86,184 Direct | · | Acquired | (price as of 2026-10-02) |
| June 26, 2020 | RARE | A | 4,250 | · | · | 4,250 Direct | · | Acquired | (price as of 2026-10-02) |
| June 26, 2020 | RARE | A | 2,550 | · | · | 12,300 Direct | +26.15% | Acquired | (price as of 2026-10-02) |
| June 11, 2019 | RARE | A | 5,000 | · | · | 5,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 11, 2019 | RARE | A | 3,000 | · | · | 9,750 Direct | +44.44% | Acquired | (price as of 2026-10-02) |
| June 19, 2018 | RARE | A | 5,000 | · | · | 5,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 19, 2018 | RARE | A | 3,000 | · | · | 6,750 Direct | +80.00% | Acquired | (price as of 2026-10-02) |
| June 22, 2017 | RARE | A | 3,750 | · | · | 3,750 Direct | · | Acquired | (price as of 2026-10-02) |
| June 22, 2017 | RARE | A | 1,875 | · | · | 3,750 Direct | +100.00% | Acquired | (price as of 2026-10-02) |
| June 9, 2016 | RARE | A | 1,875 | · | · | 1,875 Direct | · | Acquired | (price as of 2026-10-02) |
| June 9, 2016 | RARE | A | 3,750 | · | · | 3,750 Direct | · | Acquired | (price as of 2026-10-02) |
| June 18, 2015 | RARE | A | 7,500 | · | · | 7,500 Direct | · | Acquired | (price as of 2026-10-02) |
| April 8, 2015 | RARE | A | 17,500 | · | · | 17,500 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 17, 2026 | GPCR | Share Option (right to buy) | Ordinary Shares | · | June 16, 2036 | 39,453 | Acquired |
| May 15, 2026 | PRTA | Stock Option (Right to Buy) | Ordinary Shares | $9.76 | May 15, 2036 | 27,000 | Acquired |
| May 14, 2026 | RARE | Stock Option (Right to Buy) | Common Stock | $25.80 | May 14, 2036 | 14,058 | Acquired |
| June 23, 2025 | GPCR | Share Option (right to buy) | Ordinary Shares | · | June 22, 2035 | 51,804 | Acquired |
| May 15, 2025 | RARE | Stock Option (Right to Buy) | Common Stock | $34.84 | May 15, 2035 | 10,787 | Acquired |
| May 14, 2025 | PRTA | Stock Option (Right to Buy) | Ordinary Shares | $6.88 | May 14, 2035 | 20,183 | Acquired |
| June 25, 2024 | GPCR | Share Option (right to buy) | Ordinary Shares | · | June 24, 2034 | 37,500 | Acquired |
| June 18, 2024 | RARE | Stock Option (Right to Buy) | Common Stock | $37.42 | June 18, 2034 | 9,900 | Acquired |
| May 24, 2024 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $1.74 | July 21, 2030 | 293,203 | Disposed |
| May 24, 2024 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $1.64 | May 14, 2033 | 366,744 | Disposed |
| May 15, 2024 | PRTA | Stock Option (Right to Buy) | Ordinary Shares | $22.39 | May 15, 2034 | 15,000 | Acquired |
| Feb. 21, 2024 | PRTA | Stock Option (Right to Buy) | Ordinary Shares | $27.05 | Feb. 21, 2034 | 132,000 | Acquired |
| Aug. 3, 2023 | GPCR | Stock option (right to buy) | Ordinary Shares | $2.60 | Jan. 19, 2032 | 205,500 | Acquired |
| Aug. 3, 2023 | GPCR | Stock option (right to buy) | Ordinary Shares | $2.60 | Jan. 19, 2032 | 205,500 | Acquired |
| Aug. 3, 2023 | GPCR | Stock option (right to buy) | Ordinary Shares | $2.60 | Jan. 19, 2032 | 411,000 | Disposed |
| June 7, 2023 | RARE | Stock Option (Right to Buy) | Common Stock | $51.82 | June 7, 2033 | 7,110 | Acquired |
| May 15, 2023 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $1.64 | May 14, 2033 | 366,744 | Acquired |
| Feb. 7, 2023 | GPCR | Series B Preferred Shares | Ordinary Shares | · | · | 123,508 | Disposed |
| June 24, 2022 | RARE | Stock Option (Right to Buy) | Common Stock | $60.57 | June 24, 2032 | 6,245 | Acquired |
| May 16, 2022 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $4.05 | May 15, 2032 | 140,713 | Acquired |
| May 16, 2022 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $4.05 | May 15, 2032 | 118,784 | Acquired |
| Oct. 29, 2021 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $9.17 | Oct. 28, 2031 | 45,229 | Acquired |
| June 24, 2021 | RARE | Stock Option (Right to Buy) | Common Stock | $93.20 | June 24, 2031 | 4,125 | Acquired |
| Feb. 10, 2021 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $1.74 | July 21, 2030 | 312,750 | Acquired |
| Feb. 10, 2021 | NUVB | Stock Option (Right to Buy) | Class A Common Stock | $4.60 | Oct. 4, 2030 | 86,184 | Acquired |
| June 26, 2020 | RARE | Stock Option (Right to Buy) | Common Stock | $76.58 | June 26, 2030 | 4,250 | Acquired |
| June 11, 2019 | RARE | Stock Option (Right to Buy) | Common Stock | $58.74 | June 11, 2029 | 5,000 | Acquired |
| June 19, 2018 | RARE | Stock Option (Right to Buy) | Common Stock | $80.69 | June 19, 2028 | 5,000 | Acquired |
| June 22, 2017 | RARE | Employee Stock Option (Right to Buy) | Common Stock | $65.66 | June 22, 2027 | 3,750 | Acquired |
| June 9, 2016 | RARE | Employee Stock Option (Right to Buy) | Common Stock | $65.85 | June 9, 2026 | 3,750 | Acquired |
| June 18, 2015 | RARE | Stock Option (Right to Buy) | Common Stock | $97.85 | June 17, 2025 | 7,500 | Acquired |
| April 8, 2015 | RARE | Stock Option (Right to Buy) | Common Stock | $59.95 | April 7, 2025 | 17,500 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.