Scott Koenig
CIK 1587514 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 19, 2017 · Latest: March 13, 2017
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 54 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 15, 2025 | MGNX | M | 42,329 | — | — | 42,330 Direct | -50.00% | Disposed | (price as of 2026-08-19) |
| Feb. 15, 2025 | MGNX | M | 42,329 | — | — | 777,415 Direct | +5.76% | Acquired | (price as of 2026-08-19) |
| Feb. 8, 2025 | MGNX | M | 31,673 | — | — | 63,327 Direct | -33.34% | Disposed | (price as of 2026-08-19) |
| Feb. 8, 2025 | MGNX | A | 31,673 | — | — | 735,086 Direct | +4.50% | Acquired | (price as of 2026-08-19) |
| Oct. 7, 2024 | MGNX | G | 53,265 | — | — | 427,480 Indirect | +14.23% | Acquired | (price as of 2026-08-19) |
| Oct. 7, 2024 | MGNX | G | 53,265 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| Sept. 23, 2024 | MGNX | G | 374,215 | — | — | 374,215 Indirect | — | Acquired | (price as of 2026-08-19) |
| Sept. 23, 2024 | MGNX | G | 374,215 | — | — | 703,413 Direct | -34.73% | Disposed | (price as of 2026-08-19) |
| Feb. 15, 2024 | MGNX | M | 42,341 | — | — | 84,659 Direct | -33.34% | Disposed | (price as of 2026-08-19) |
| Feb. 15, 2024 | MGNX | F | 14,349 | $17.40 | $249,673 | 1,077,628 Direct | -1.31% | Disposed | -76.0% (price as of 2026-08-19) |
| Feb. 15, 2024 | MGNX | M | 42,341 | — | — | 1,091,977 Direct | +4.03% | Acquired | (price as of 2026-08-19) |
| Feb. 8, 2024 | MGNX | A | 95,000 | — | — | 95,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Feb. 8, 2024 | MGNX | A | 248,000 | — | — | 248,000 Direct | — | Acquired | (price as of 2026-08-19) |
| June 1, 2023 | CBIO | M | 21,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| June 1, 2023 | CBIO | M | 21,000 | $0.60 | $12,600 | 36,750 Direct | +133.33% | Acquired | -71.0% (price as of 2026-08-19) |
| May 19, 2023 | CBIO | A | 35,000 | — | — | 35,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Feb. 15, 2023 | MGNX | A | 127,000 | — | — | 127,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Feb. 15, 2023 | MGNX | A | 510,000 | — | — | 510,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Jan. 27, 2023 | CBIO | M | 10,500 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| Jan. 27, 2023 | CBIO | M | 10,500 | $2.55 | $26,775 | 15,750 Direct | +200.00% | Acquired | -93.2% (price as of 2026-08-19) |
| May 18, 2022 | CBIO | A | 21,000 | — | — | 21,000 Direct | — | Acquired | (price as of 2026-08-19) |
| May 16, 2022 | MGNX | M | 53,265 | $1.51 | $80,430 | 0 Direct | -100.00% | Disposed | 176.5% (price as of 2026-08-19) |
| May 16, 2022 | MGNX | M | 53,265 | $1.51 | $80,430 | 1,049,636 Direct | +5.35% | Acquired | 176.5% (price as of 2026-08-19) |
| Feb. 22, 2022 | MGNX | A | 480,000 | — | — | 480,000 Direct | — | Acquired | (price as of 2026-08-19) |
| May 18, 2021 | CBIO | A | 10,500 | — | — | 10,500 Direct | — | Acquired | (price as of 2026-08-19) |
| May 18, 2021 | CBIO | A | 5,250 | — | — | 5,250 Direct | — | Acquired | (price as of 2026-08-19) |
| Feb. 22, 2021 | MGNX | A | 280,000 | — | — | 280,000 Direct | — | Acquired | (price as of 2026-08-19) |
| May 22, 2020 | CBIO | A | 21,000 | — | — | 21,000 Direct | — | Acquired | (price as of 2026-08-19) |
| March 11, 2020 | MGNX | M | 133,163 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| March 11, 2020 | MGNX | M | 133,163 | $0.94 | $125,173 | 943,103 Direct | +16.44% | Acquired | 344.1% (price as of 2026-08-19) |
| Feb. 20, 2020 | MGNX | A | 290,000 | $11.50 | $3,335,000 | 290,000 Direct | — | Acquired | -63.7% (price as of 2026-08-19) |
| May 17, 2019 | CBIO | A | 21,000 | — | — | 21,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Feb. 21, 2019 | MGNX | A | 260,000 | — | — | 260,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Jan. 3, 2019 | MGNX | M | 39,897 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| Jan. 3, 2019 | MGNX | M | 39,897 | $0.94 | $37,503 | 213,060 Direct | +23.04% | Acquired | 344.1% (price as of 2026-08-19) |
| Nov. 13, 2018 | MGNX | M | 40,000 | $0.94 | $37,600 | 173,163 Direct | +30.04% | Acquired | 344.1% (price as of 2026-08-19) |
| Nov. 13, 2018 | MGNX | M | 40,000 | — | — | 39,897 Direct | -50.06% | Disposed | (price as of 2026-08-19) |
| May 18, 2018 | CBIO | A | 11,000 | — | — | 11,000 Direct | — | Acquired | (price as of 2026-08-19) |
| March 2, 2018 | MGNX | A | 225,000 | — | — | 225,000 Direct | — | Acquired | (price as of 2026-08-19) |
| May 25, 2017 | CBIO | A | 11,000 | — | — | 11,000 Direct | — | Acquired | (price as of 2026-08-19) |
| March 9, 2017 | CBIO | A | 22,000 | — | — | 22,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Feb. 15, 2017 | MGNX | A | 200,000 | — | — | 200,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Jan. 17, 2017 | MGNX | M | 79,898 | $0.94 | $75,104 | 0 Direct | -100.00% | Disposed | 344.1% (price as of 2026-08-19) |
| Jan. 17, 2017 | MGNX | M | 79,898 | $0.94 | $75,104 | 133,163 Direct | +150.00% | Acquired | 344.1% (price as of 2026-08-19) |
| May 16, 2016 | MGNX | M | 26,631 | — | — | 79,897 Direct | -25.00% | Disposed | (price as of 2026-08-19) |
| May 16, 2016 | MGNX | M | 7,988 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| May 16, 2016 | MGNX | M | 34,619 | $0.94 | $32,542 | 167,782 Direct | +26.00% | Acquired | 344.1% (price as of 2026-08-19) |
| May 11, 2016 | MGNX | M | 79,898 | — | — | 79,898 Direct | -50.00% | Disposed | (price as of 2026-08-19) |
| May 11, 2016 | MGNX | M | 79,898 | $0.94 | $75,104 | 133,163 Direct | +150.00% | Acquired | 344.1% (price as of 2026-08-19) |
| Dec. 18, 2015 | MGNX | A | 150,000 | — | — | 150,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Dec. 19, 2014 | MGNX | M | 62,205 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-19) |
| Dec. 19, 2014 | MGNX | M | 62,205 | $0.94 | $58,473 | 703,414 Indirect | +9.70% | Acquired | 344.1% (price as of 2026-08-19) |
| Dec. 12, 2014 | MGNX | A | 140,000 | — | — | 140,000 Direct | — | Acquired | (price as of 2026-08-19) |
| Oct. 9, 2013 | MGNX | A | 152,525 | — | — | 152,525 Direct | — | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| Feb. 15, 2025 | MGNX | Restricted Stock Unit | Common Stock (42,329) | — | — | 42,329 | Disposed |
| Feb. 8, 2025 | MGNX | Restricted Stock Unit | Common Stock (31,673) | — | — | 31,673 | Disposed |
| Feb. 15, 2024 | MGNX | Restricted Stock Unit | Common Stock (42,341) | — | — | 42,341 | Disposed |
| Feb. 8, 2024 | MGNX | Restricted Stock Unit | Common Stock (95,000) | — | — | 95,000 | Acquired |
| Feb. 8, 2024 | MGNX | Employee Stock Option (right to buy) | Common Stock (248,000) | $18.30 | Feb. 8, 2034 | 248,000 | Acquired |
| June 1, 2023 | CBIO | Stock option (right to buy) | Common Stock (21,000) | $0.60 | May 17, 2032 | 21,000 | Disposed |
| May 19, 2023 | CBIO | Stock Option (right to buy) | Common Stock (35,000) | $1.98 | May 18, 2033 | 35,000 | Acquired |
| Feb. 15, 2023 | MGNX | Restricted Stock Unit | Common Stock (127,000) | — | — | 127,000 | Acquired |
| Feb. 15, 2023 | MGNX | Employee stock option (right to buy) | Common Stock (510,000) | $4.82 | Feb. 15, 2033 | 510,000 | Acquired |
| Jan. 27, 2023 | CBIO | Stock Option (right to buy) | Common Stock (10,500) | $2.55 | May 17, 2031 | 10,500 | Disposed |
| May 18, 2022 | CBIO | Stock Option (right to buy) | Common Stock (21,000) | $0.60 | May 17, 2032 | 21,000 | Acquired |
| May 16, 2022 | MGNX | Employee stock option (right to buy) | Common Stock (53,265) | $1.51 | Jan. 5, 2023 | 53,265 | Disposed |
| Feb. 22, 2022 | MGNX | Employee stock option (right to buy) | Common Stock (480,000) | $10.15 | Feb. 22, 2032 | 480,000 | Acquired |
| May 18, 2021 | CBIO | Stock Option (right to buy) | Common Stock (10,500) | $2.55 | May 17, 2031 | 10,500 | Acquired |
| Feb. 22, 2021 | MGNX | Employee stock option (right to buy) | Common Stock (280,000) | $19.18 | Feb. 22, 2031 | 280,000 | Acquired |
| May 22, 2020 | CBIO | Stock Option (right to buy) | Common Stock (21,000) | $3.00 | May 21, 2030 | 21,000 | Acquired |
| March 11, 2020 | MGNX | Employee stock option (right to buy) | Common Stock (133,163) | $0.94 | March 13, 2022 | 133,163 | Disposed |
| Feb. 20, 2020 | MGNX | Employee stock option (right to buy) | Common Stock (290,000) | $11.50 | Feb. 20, 2030 | 290,000 | Acquired |
| May 17, 2019 | CBIO | Stock Option (right to buy) | Common Stock (21,000) | $12.39 | May 16, 2029 | 21,000 | Acquired |
| Feb. 21, 2019 | MGNX | Employee stock option (right to buy) | Common Stock (260,000) | $21.88 | Feb. 21, 2029 | 260,000 | Acquired |
| Jan. 3, 2019 | MGNX | Employee stock option (right to buy) | Common Stock (39,897) | $0.94 | Jan. 10, 2019 | 39,897 | Disposed |
| Nov. 13, 2018 | MGNX | Employee stock option (right to buy) | Common Stock (40,000) | $0.94 | Jan. 10, 2019 | 40,000 | Disposed |
| May 18, 2018 | CBIO | Stock Option (right to buy) | Common Stock (11,000) | $18.41 | May 17, 2028 | 11,000 | Acquired |
| March 2, 2018 | MGNX | Employee stock option (right to buy) | Common Stock (225,000) | $28.94 | March 2, 2028 | 225,000 | Acquired |
| May 25, 2017 | CBIO | Stock Option (right to buy) | Common Stock (11,000) | $13.89 | May 24, 2027 | 11,000 | Acquired |
| March 9, 2017 | CBIO | Stock Option (right to buy) | Common Stock (22,000) | $6.59 | March 9, 2027 | 22,000 | Acquired |
| Feb. 15, 2017 | MGNX | Common Stock | Common Stock (200,000) | $20.53 | Feb. 15, 2027 | 200,000 | Acquired |
| Jan. 17, 2017 | MGNX | Employee stock option (right to buy) | Common Stock (79,898) | $0.94 | Nov. 15, 2017 | 79,898 | Disposed |
| May 16, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock (26,631) | $0.94 | Jan. 10, 2019 | 26,631 | Disposed |
| May 16, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock (7,988) | $0.94 | Jan. 9, 2020 | 7,988 | Disposed |
| May 11, 2016 | MGNX | Employee Stock Option (right to buy) | Common Stock (79,898) | $0.94 | Nov. 15, 2017 | 79,898 | Disposed |
| Dec. 18, 2015 | MGNX | Employee Stock Option (right to buy) | Common Stock (150,000) | $31.43 | Dec. 18, 2025 | 150,000 | Acquired |
| Dec. 19, 2014 | MGNX | Employee Stock Option (right to buy) | Common Stock (62,205) | $0.94 | Jan. 6, 2017 | 62,205 | Disposed |
| Dec. 12, 2014 | MGNX | Employee Stock Option (right to buy) | Common Stock (140,000) | $29.68 | Dec. 12, 2024 | 140,000 | Acquired |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy) | Common Stock (152,525) | $16.00 | Oct. 9, 2023 | 152,525 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 15 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 13, 2017 | CBIO | No securities beneficially owned | 0 | Direct |
| Oct. 9, 2013 | MGNX | Common Stock | 53,265 | Direct |
| Oct. 9, 2013 | MGNX | Common Stock | 641,209 | Indirect |
| Oct. 9, 2013 | MGNX | Common Stock | 53,265 | Indirect |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | Direct |
| Oct. 9, 2013 | MGNX | Stock Option (right to buy)→ Common Stock | — | 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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $477,120 | — | — | — | — | — | $475,841 | $952,961 |
| 2024 | $734,031 | — | $1,738,500 | $3,574,647 | $342,470 | — | $13,800 | $6,403,448 |
| 2023 | $704,914 | — | $612,140 | $1,894,191 | $481,380 | — | $13,200 | $3,705,825 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.