Jon Marc Wigginton
Insider
First SEC filing: June 9, 2026 · Latest: June 9, 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 5, 2026 | STRO | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 23, 2025 | STRO | A | 1,500 | · | · | 1,500 Direct | · | Acquired | (price as of 2026-10-05) |
| June 6, 2025 | STRO | A | 50,000 | · | · | 50,000 Direct | · | Acquired | (price as of 2026-10-05) |
| June 6, 2024 | STRO | A | 35,000 | · | · | 35,000 Direct | · | Acquired | (price as of 2026-10-05) |
| June 8, 2023 | STRO | A | 25,000 | · | · | 25,000 Direct | · | Acquired | (price as of 2026-10-05) |
| June 6, 2022 | STRO | A | 18,500 | · | · | 18,500 Direct | · | Acquired | (price as of 2026-10-05) |
| June 3, 2021 | STRO | A | 18,500 | · | · | 18,500 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 7, 2021 | CGEM | A | 116,666 | · | · | 116,666 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 30, 2020 | STRO | A | 24,000 | · | · | 24,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 20, 2020 | MGNX | A | 100,000 | $11.50 | $1,150,000 | 100,000 Direct | · | Acquired | -69.4% (price as of 2026-10-05) |
| Feb. 21, 2019 | MGNX | A | 90,000 | · | · | 90,000 Direct | · | Acquired | (price as of 2026-10-05) |
| March 2, 2018 | MGNX | A | 70,000 | · | · | 70,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 26, 2018 | MGNX | F | 11,070 | $23.46 | $259,702 | 18,930 Direct | -36.90% | Disposed | -85.0% (price as of 2026-10-05) |
| Jan. 17, 2018 | MGNX | M | 2,524 | · | · | 45,448 Direct | -5.26% | Disposed | (price as of 2026-10-05) |
| Jan. 17, 2018 | MGNX | S 10b5-1 | 2,524 | $20.00 | $50,480 | 30,000 Direct | -7.76% | Disposed | -82.4% (price as of 2026-10-05) |
| Jan. 17, 2018 | MGNX | M | 2,524 | $4.70 | $11,863 | 32,524 Direct | +8.41% | Acquired | -25.1% (price as of 2026-10-05) |
| Jan. 16, 2018 | MGNX | M | 2,476 | · | · | 47,972 Direct | -4.91% | Disposed | (price as of 2026-10-05) |
| Jan. 16, 2018 | MGNX | S 10b5-1 | 2,476 | $20.00 | $49,520 | 30,000 Direct | -7.62% | Disposed | -82.4% (price as of 2026-10-05) |
| Jan. 16, 2018 | MGNX | M | 2,476 | $4.70 | $11,637 | 32,476 Direct | +8.25% | Acquired | -25.1% (price as of 2026-10-05) |
| Nov. 21, 2017 | MGNX | M | 5,000 | · | · | 50,448 Direct | -9.02% | Disposed | (price as of 2026-10-05) |
| Nov. 21, 2017 | MGNX | S 10b5-1 | 5,000 | $20.00 | $100,000 | 30,000 Direct | -14.29% | Disposed | -82.4% (price as of 2026-10-05) |
| Nov. 21, 2017 | MGNX | M | 5,000 | $4.70 | $23,500 | 35,000 Direct | +16.67% | Acquired | -25.1% (price as of 2026-10-05) |
| Oct. 25, 2017 | MGNX | M | 10,000 | $4.70 | $47,000 | 55,448 Direct | -15.28% | Disposed | -25.1% (price as of 2026-10-05) |
| Oct. 25, 2017 | MGNX | S 10b5-1 | 10,000 | $20.00 | $200,000 | 30,000 Direct | -25.00% | Disposed | -82.4% (price as of 2026-10-05) |
| Oct. 25, 2017 | MGNX | M | 10,000 | $4.70 | $47,000 | 40,000 Direct | +33.33% | Acquired | -25.1% (price as of 2026-10-05) |
| June 5, 2017 | MGNX | M | 5,000 | $4.70 | $23,500 | 65,448 Direct | -7.10% | Disposed | -25.1% (price as of 2026-10-05) |
| June 5, 2017 | MGNX | S 10b5-1 | 5,000 | $20.00 | $100,000 | 30,000 Direct | -14.29% | Disposed | -82.4% (price as of 2026-10-05) |
| June 5, 2017 | MGNX | M | 5,000 | $4.70 | $23,500 | 35,000 Direct | +16.67% | Acquired | -25.1% (price as of 2026-10-05) |
| April 19, 2017 | MGNX | M | 15,000 | · | · | 70,448 Direct | -17.55% | Disposed | (price as of 2026-10-05) |
| April 19, 2017 | MGNX | S | 15,000 | $20.00 | $300,000 | 30,000 Direct | -33.33% | Disposed | -82.4% (price as of 2026-10-05) |
| April 19, 2017 | MGNX | M | 15,000 | $4.70 | $70,500 | 45,000 Direct | +50.00% | Acquired | -25.1% (price as of 2026-10-05) |
| Feb. 15, 2017 | MGNX | A | 67,500 | $20.53 | $1,385,775 | 67,500 Direct | · | Acquired | -82.9% (price as of 2026-10-05) |
| Oct. 3, 2016 | MGNX | M | 10,000 | $4.70 | $47,000 | 10,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Oct. 3, 2016 | MGNX | S 10b5-1 | 10,000 | $29.34 | $293,400 | 0 Direct | -100.00% | Disposed | -88.0% (price as of 2026-10-05) |
| Oct. 3, 2016 | MGNX | M | 10,000 | · | · | 25,254 Direct | -28.37% | Disposed | (price as of 2026-10-05) |
| Oct. 3, 2016 | MGNX | M | 10,000 | $4.70 | $47,000 | 10,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Oct. 3, 2016 | MGNX | S 10b5-1 | 10,000 | $29.34 | $293,400 | 0 Direct | -100.00% | Disposed | -88.0% (price as of 2026-10-05) |
| Oct. 3, 2016 | MGNX | M | 10,000 | · | · | 15,254 Direct | -39.60% | Disposed | (price as of 2026-10-05) |
| Aug. 1, 2016 | MGNX | M | 20,000 | $4.70 | $94,000 | 20,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Aug. 1, 2016 | MGNX | S 10b5-1 | 20,000 | $30.78 | $615,600 | 0 Direct | -100.00% | Disposed | -88.6% (price as of 2026-10-05) |
| Aug. 1, 2016 | MGNX | M | 20,000 | · | · | 35,254 Direct | -36.20% | Disposed | (price as of 2026-10-05) |
| July 1, 2016 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| July 1, 2016 | MGNX | S 10b5-1 | 5,000 | $27.22 | $136,100 | 0 Direct | -100.00% | Disposed | -87.1% (price as of 2026-10-05) |
| July 1, 2016 | MGNX | M | 5,000 | · | · | 55,254 Direct | -8.30% | Disposed | (price as of 2026-10-05) |
| Feb. 25, 2016 | MGNX | A | 30,000 | · | · | 30,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 4, 2016 | MGNX | M | 10,000 | · | · | 60,254 Direct | -14.23% | Disposed | (price as of 2026-10-05) |
| Jan. 4, 2016 | MGNX | S 10b5-1 | 10,000 | $29.64 | $296,400 | 0 Direct | -100.00% | Disposed | -88.1% (price as of 2026-10-05) |
| Jan. 4, 2016 | MGNX | M | 10,000 | $4.70 | $47,000 | 10,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Dec. 18, 2015 | MGNX | A | 55,000 | · | · | 55,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Oct. 1, 2015 | MGNX | M | 5,000 | · | · | 45,194 Direct | -9.96% | Disposed | (price as of 2026-10-05) |
| Oct. 1, 2015 | MGNX | S 10b5-1 | 5,000 | $21.11 | $105,550 | 0 Direct | -100.00% | Disposed | -83.3% (price as of 2026-10-05) |
| Oct. 1, 2015 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Oct. 1, 2015 | MGNX | M | 5,000 | · | · | 45,194 Direct | -9.96% | Disposed | (price as of 2026-10-05) |
| Oct. 1, 2015 | MGNX | S 10b5-1 | 5,000 | $21.11 | $105,550 | 0 Direct | -100.00% | Disposed | -83.3% (price as of 2026-10-05) |
| Oct. 1, 2015 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Aug. 3, 2015 | MGNX | M | 10,000 | · | · | 50,194 Direct | -16.61% | Disposed | (price as of 2026-10-05) |
| Aug. 3, 2015 | MGNX | S 10b5-1 | 10,000 | $37.15 | $371,500 | 0 Direct | -100.00% | Disposed | -90.5% (price as of 2026-10-05) |
| Aug. 3, 2015 | MGNX | M | 10,000 | $4.70 | $47,000 | 10,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Aug. 3, 2015 | MGNX | M | 10,000 | · | · | 50,194 Direct | -16.61% | Disposed | (price as of 2026-10-05) |
| Aug. 3, 2015 | MGNX | S 10b5-1 | 10,000 | $37.15 | $371,500 | 0 Direct | -100.00% | Disposed | -90.5% (price as of 2026-10-05) |
| Aug. 3, 2015 | MGNX | M | 10,000 | $4.70 | $47,000 | 10,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| July 1, 2015 | MGNX | M | 5,000 | · | · | 60,194 Direct | -7.67% | Disposed | (price as of 2026-10-05) |
| July 1, 2015 | MGNX | S 10b5-1 | 5,000 | $37.15 | $185,750 | 0 Direct | -100.00% | Disposed | -90.5% (price as of 2026-10-05) |
| July 1, 2015 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| April 1, 2015 | MGNX | M | 5,000 | · | · | 65,194 Direct | -7.12% | Disposed | (price as of 2026-10-05) |
| April 1, 2015 | MGNX | S 10b5-1 | 5,000 | $30.86 | $154,300 | 0 Direct | -100.00% | Disposed | -88.6% (price as of 2026-10-05) |
| Feb. 2, 2015 | MGNX | M | 5,000 | · | · | 70,194 Direct | -6.65% | Disposed | (price as of 2026-10-05) |
| Feb. 2, 2015 | MGNX | S 10b5-1 | 5,000 | $31.04 | $155,200 | 0 Direct | -100.00% | Disposed | -88.7% (price as of 2026-10-05) |
| Feb. 2, 2015 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Dec. 12, 2014 | MGNX | A | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Oct. 1, 2014 | MGNX | M | 5,000 | · | · | 75,194 Direct | -6.23% | Disposed | (price as of 2026-10-05) |
| Oct. 1, 2014 | MGNX | S 10b5-1 | 5,000 | $20.48 | $102,400 | 0 Direct | -100.00% | Disposed | -82.8% (price as of 2026-10-05) |
| Oct. 1, 2014 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| Aug. 18, 2014 | MGNX | M | 5,000 | · | · | 80,194 Direct | -5.87% | Disposed | (price as of 2026-10-05) |
| Aug. 18, 2014 | MGNX | S 10b5-1 | 5,000 | $20.52 | $102,600 | 0 Direct | -100.00% | Disposed | -82.8% (price as of 2026-10-05) |
| Aug. 18, 2014 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
| April 1, 2014 | MGNX | M | 5,000 | $4.70 | $23,500 | 5,000 Direct | · | Acquired | -25.1% (price as of 2026-10-05) |
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 5, 2026 | STRO | Stock Option (right to buy) | Common Stock | $26.09 | June 5, 2036 | 10,000 | Acquired |
| Dec. 23, 2025 | STRO | Stock Option (right to buy) | Common Stock | $10.38 | Dec. 23, 2035 | 1,500 | Acquired |
| June 6, 2025 | STRO | Stock Option (right to buy) | Common Stock | $0.85 | June 6, 2035 | 50,000 | Acquired |
| June 6, 2024 | STRO | Stock Option (right to buy) | Common Stock | $3.76 | June 6, 2034 | 35,000 | Acquired |
| June 8, 2023 | STRO | Stock Option (right to buy) | Common Stock | $5.12 | June 8, 2033 | 25,000 | Acquired |
| June 6, 2022 | STRO | Stock Option (right to buy) | Common Stock | $4.44 | June 5, 2032 | 18,500 | Acquired |
| June 3, 2021 | STRO | Stock Option (right to buy) | Common Stock | $18.21 | June 2, 2031 | 18,500 | Acquired |
| Jan. 7, 2021 | CGEM | Stock Option (Right to Buy) | Common Stock | $21.00 | Jan. 6, 2031 | 116,666 | Acquired |
| Nov. 30, 2020 | STRO | Stock Option (right to buy) | Common Stock | $17.10 | Nov. 29, 2030 | 24,000 | Acquired |
| Feb. 20, 2020 | MGNX | Employee stock option (right to buy) | Common Stock | $11.50 | Feb. 20, 2030 | 100,000 | Acquired |
| Feb. 21, 2019 | MGNX | Employee stock option (right to buy) | Common Stock | $21.88 | Feb. 21, 2029 | 90,000 | Acquired |
| March 2, 2018 | MGNX | Employee stock option (right to buy) | Common Stock | $28.94 | March 2, 2028 | 70,000 | Acquired |
| Jan. 17, 2018 | MGNX | Employee stock option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 2,524 | Disposed |
| Jan. 16, 2018 | MGNX | Employee stock option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 2,476 | Disposed |
| Nov. 21, 2017 | MGNX | Employee stock option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| Oct. 25, 2017 | MGNX | Employee stock option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 10,000 | Disposed |
| June 5, 2017 | MGNX | Employee stock option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| April 19, 2017 | MGNX | Employee stock option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 15,000 | Disposed |
| Feb. 15, 2017 | MGNX | Common Stock | Common Stock | $20.53 | Feb. 15, 2027 | 67,500 | Acquired |
| Oct. 3, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 10,000 | Disposed |
| Oct. 3, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 10,000 | Disposed |
| Aug. 1, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 20,000 | Disposed |
| July 1, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| Jan. 4, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 10,000 | Disposed |
| Dec. 18, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $31.43 | Dec. 18, 2025 | 55,000 | Acquired |
| Oct. 1, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| Oct. 1, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| Aug. 3, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 10,000 | Disposed |
| Aug. 3, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 10,000 | Disposed |
| July 1, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| April 1, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| Feb. 2, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| Dec. 12, 2014 | MGNX | Employee Stock Option (right to buy) | Common Stock | $29.68 | Dec. 12, 2024 | 40,000 | Acquired |
| Oct. 1, 2014 | MGNX | Stock option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
| Aug. 18, 2014 | MGNX | Stock Option (right to buy) | Common Stock | $4.70 | July 18, 2023 | 5,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 7, 2021 | CGEM | Stock Option (Right to Buy) | 379,337 | Direct |
| Jan. 7, 2021 | CGEM | Stock Option (Right to Buy) | 252,891 | Direct |
| Dec. 1, 2020 | STRO | No securities beneficially held | 0 | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy) | · | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy) | · | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2019 | $453,454 | · | · | $1,321,668 | $163,366 | · | $3,763 | $1,942,251 |
| 2018 | $460,000 | · | · | · | $173,328 | · | $8,250 | $1,976,107 |
| 2017 | $445,050 | · | · | · | $197,600 | · | $8,100 | $1,516,458 |
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2020 | $321,122 | $258,000 | · | · | · | · | $5,375 | $4,544,022 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.