Stanley C Erck
CIK 1342826 · View on SEC EDGAR ↗
Insider
First SEC filing: July 29, 2021 · Latest: July 29, 2021
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
+ 43 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
43 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 13, 2025 | MXCT | P | 100,000 | $1.37 | $137,000 | 398,328 Direct | +33.52% | Acquired | -4.0% (price as of 2026-08-19) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 500 | $180.58 | $90,290 | 23,879 Direct | -2.05% | Disposed | -95.4% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 3,300 | $179.48 | $592,284 | 24,379 Direct | -11.92% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 8,563 | $178.46 | $1,528,153 | 27,679 Direct | -23.63% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 8,890 | $177.58 | $1,578,686 | 36,242 Direct | -19.70% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 4,700 | $176.48 | $829,456 | 45,132 Direct | -9.43% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 3,600 | $175.61 | $632,196 | 49,832 Direct | -6.74% | Disposed | -95.2% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 3,100 | $174.56 | $541,136 | 53,432 Direct | -5.48% | Disposed | -95.2% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 5,038 | $173.45 | $873,841 | 56,532 Direct | -8.18% | Disposed | -95.2% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 3,746 | $172.36 | $645,661 | 61,570 Direct | -5.74% | Disposed | -95.2% (price as of 2026-08-20) |
| Oct. 4, 2021 | NVAX | S 10b5-1 | 1,392 | $166.98 | $232,436 | 65,316 Direct | -2.09% | Disposed | -95.0% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 472 | $190.63 | $89,977 | 23,879 Direct | -1.94% | Disposed | -95.6% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 1,502 | $189.47 | $284,584 | 24,351 Direct | -5.81% | Disposed | -95.6% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 100 | $187.95 | $18,795 | 25,853 Direct | -0.39% | Disposed | -95.6% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 8 | $185.71 | $1,486 | 25,953 Direct | -0.03% | Disposed | -95.5% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 192 | $183.61 | $35,253 | 25,961 Direct | -0.73% | Disposed | -95.4% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 300 | $182.40 | $54,720 | 26,153 Direct | -1.13% | Disposed | -95.4% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 1,600 | $181.21 | $289,936 | 26,453 Direct | -5.70% | Disposed | -95.4% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 2,541 | $180.42 | $458,447 | 28,053 Direct | -8.31% | Disposed | -95.4% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 1,323 | $179.29 | $237,201 | 30,594 Direct | -4.15% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 4,604 | $178.27 | $820,755 | 31,917 Direct | -12.61% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 6,227 | $177.37 | $1,104,483 | 36,521 Direct | -14.57% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 2,601 | $176.24 | $458,400 | 42,748 Direct | -5.74% | Disposed | -95.3% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 3,602 | $175.15 | $630,890 | 45,349 Direct | -7.36% | Disposed | -95.2% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 5,853 | $174.30 | $1,020,178 | 48,951 Direct | -10.68% | Disposed | -95.2% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 3,002 | $173.16 | $519,826 | 54,804 Direct | -5.19% | Disposed | -95.2% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 4,103 | $172.02 | $705,798 | 57,806 Direct | -6.63% | Disposed | -95.1% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 2,602 | $171.34 | $445,827 | 61,909 Direct | -4.03% | Disposed | -95.1% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 901 | $170.07 | $153,233 | 64,511 Direct | -1.38% | Disposed | -95.1% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 1,959 | $169.05 | $331,169 | 65,412 Direct | -2.91% | Disposed | -95.1% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 2,801 | $167.88 | $470,232 | 67,371 Direct | -3.99% | Disposed | -95.0% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 1,100 | $166.62 | $183,282 | 70,172 Direct | -1.54% | Disposed | -95.0% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 904 | $165.68 | $149,775 | 71,272 Direct | -1.25% | Disposed | -95.0% (price as of 2026-08-20) |
| Oct. 1, 2021 | NVAX | S 10b5-1 | 703 | $164.74 | $115,812 | 72,176 Direct | -0.96% | Disposed | -94.9% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 675 | $221.53 | $149,533 | 20,495 Direct | -3.19% | Disposed | -96.2% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 628 | $220.80 | $138,662 | 21,170 Direct | -2.88% | Disposed | -96.2% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 5,031 | $219.76 | $1,105,613 | 21,798 Direct | -18.75% | Disposed | -96.2% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 7,423 | $218.77 | $1,623,930 | 26,829 Direct | -21.67% | Disposed | -96.2% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 9,969 | $217.84 | $2,171,647 | 34,252 Direct | -22.54% | Disposed | -96.2% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 2,994 | $216.92 | $649,458 | 44,221 Direct | -6.34% | Disposed | -96.1% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 5,190 | $215.74 | $1,119,691 | 47,215 Direct | -9.90% | Disposed | -96.1% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 4,466 | $214.76 | $959,118 | 52,405 Direct | -7.85% | Disposed | -96.1% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 2,355 | $213.38 | $502,510 | 56,871 Direct | -3.98% | Disposed | -96.1% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 7,616 | $212.29 | $1,616,801 | 59,226 Direct | -11.39% | Disposed | -96.1% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 4,242 | $211.21 | $895,953 | 66,842 Direct | -5.97% | Disposed | -96.0% (price as of 2026-08-20) |
| July 2, 2021 | NVAX | S 10b5-1 | 1,970 | $210.23 | $414,153 | 71,084 Direct | -2.70% | Disposed | -96.0% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 12,703 | $213.07 | $2,706,628 | 41,725 Direct | -23.34% | Disposed | -96.1% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 12,917 | $214.13 | $2,765,917 | 28,808 Direct | -30.96% | Disposed | -96.1% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 6,984 | $214.97 | $1,501,350 | 21,824 Direct | -24.24% | Disposed | -96.1% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 1,329 | $215.70 | $286,665 | 20,495 Direct | -6.09% | Disposed | -96.1% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 6,419 | $212.15 | $1,361,791 | 54,428 Direct | -10.55% | Disposed | -96.1% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 4,117 | $211.07 | $868,975 | 60,847 Direct | -6.34% | Disposed | -96.0% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 6,105 | $210.02 | $1,282,172 | 64,964 Direct | -8.59% | Disposed | -96.0% (price as of 2026-08-20) |
| July 1, 2021 | NVAX | S 10b5-1 | 2,046 | $209.20 | $428,023 | 71,069 Direct | -2.80% | Disposed | -96.0% (price as of 2026-08-20) |
| Nov. 16, 2020 | NVAX | S 10b5-1 | 4,909 | $93.56 | $459,286 | 20,495 Direct | -19.32% | Disposed | -91.1% (price as of 2026-08-20) |
| Nov. 16, 2020 | NVAX | S 10b5-1 | 17,503 | $92.97 | $1,627,254 | 25,404 Direct | -40.79% | Disposed | -91.0% (price as of 2026-08-20) |
| Nov. 16, 2020 | NVAX | S 10b5-1 | 4,598 | $90.61 | $416,625 | 42,907 Direct | -9.68% | Disposed | -90.8% (price as of 2026-08-20) |
Showing latest 100 of 195 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 |
|---|---|---|---|---|---|---|---|
| June 17, 2026 | MXCT | Stock Option (right to buy) | Common Stock (49,579) | $1.13 | June 16, 2036 | 49,579 | Acquired |
| June 18, 2025 | MXCT | Stock Option (right to buy) | Common Stock (50,790) | $2.11 | June 17, 2035 | 50,790 | Acquired |
| June 22, 2023 | MXCT | Stock Option (right to buy) | Common Stock (50,000) | $4.57 | June 21, 2033 | 50,000 | Acquired |
| Dec. 14, 2022 | NVAX | Restricted Stock Units | Common Stock (6,966) | — | — | 6,966 | Disposed |
| Sept. 26, 2022 | NVAX | Restricted Stock Units | Common Stock (6,546) | — | — | 6,546 | Disposed |
| June 29, 2022 | MXCT | Stock Option (right to buy) | Common Stock (26,900) | $4.82 | June 28, 2032 | 26,900 | Acquired |
| March 10, 2022 | NVAX | Stock Option (Right to Buy) | Common Stock (62,211) | $77.77 | March 10, 2032 | 62,211 | Acquired |
| March 10, 2022 | NVAX | Restricted Stock Units | Common Stock (41,474) | — | — | 41,474 | Acquired |
| Dec. 14, 2021 | NVAX | Restricted Stock Units | Common Stock (6,967) | — | — | 6,967 | Disposed |
| Oct. 4, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (10,829) | $27.00 | Nov. 14, 2026 | 10,829 | Disposed |
| Oct. 4, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (32,000) | $27.60 | Dec. 15, 2027 | 32,000 | Disposed |
| Oct. 1, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (35,000) | $27.00 | Nov. 14, 2026 | 35,000 | Disposed |
| Oct. 1, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (14,000) | $27.60 | Dec. 15, 2027 | 14,000 | Disposed |
| Sept. 26, 2021 | NVAX | Restricted Stock Units | Common Stock (6,546) | — | — | 6,546 | Disposed |
| Aug. 9, 2021 | MXCT | Stock Option (right to buy) | Common Stock (10,000) | $16.63 | Aug. 9, 2031 | 10,000 | Acquired |
| July 2, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (27,439) | $121.00 | March 6, 2024 | 27,439 | Disposed |
| July 2, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (25,120) | $36.60 | March 2, 2023 | 25,120 | Disposed |
| July 1, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (17,560) | $121.00 | March 6, 2024 | 17,560 | Disposed |
| July 1, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (19,879) | $36.60 | March 2, 2023 | 19,879 | Disposed |
| July 1, 2021 | NVAX | Stock Option (Right to Buy) | Common Stock (15,181) | $25.60 | March 1, 2022 | 15,181 | Disposed |
| Dec. 14, 2020 | NVAX | Restricted Stock Units | Common Stock (20,900) | — | — | 20,900 | Acquired |
| Dec. 14, 2020 | NVAX | Stock Option (Right to Buy) | Common Stock (41,700) | $129.70 | Dec. 14, 2030 | 41,700 | Acquired |
| Nov. 16, 2020 | NVAX | Stock Option (Right to buy) | Common Stock (9,818) | $25.60 | March 1, 2022 | 9,818 | Disposed |
| Nov. 16, 2020 | NVAX | Stock Option (Right to buy) | Common Stock (42,499) | $39.80 | June 22, 2021 | 42,499 | Disposed |
| Sept. 28, 2020 | NVAX | Stock Appreciation Right | Common Stock (25,000) | $5.95 | Sept. 26, 2029 | 25,000 | Disposed |
| Sept. 28, 2020 | NVAX | Stock Option (Right to Buy) | Common Stock (25,000) | $5.95 | Sept. 26, 2029 | 25,000 | Disposed |
| Sept. 26, 2020 | NVAX | Restricted Stock Units | Common Stock (6,546) | — | — | 6,546 | Disposed |
| Aug. 24, 2020 | NVAX | Stock Option (Right to Buy) | Common Stock (400,000) | $19.08 | April 17, 2030 | 400,000 | Acquired |
| June 25, 2020 | NVAX | Stock Option (Right to Buy) | Common Stock (100,000) | $5.95 | Sept. 26, 2029 | 100,000 | Acquired |
| March 8, 2020 | NVAX | Restricted Stock Units | Common Stock (6,072) | — | — | 6,072 | Disposed |
| Sept. 26, 2019 | NVAX | Stock Appreciation Right [F3] | Common Stock (100,000) | $5.95 | Sept. 26, 2029 | 100,000 | Acquired |
| Sept. 26, 2019 | NVAX | Restricted Stock Units | Common Stock (19,638) | — | — | 19,638 | Acquired |
| Sept. 26, 2019 | NVAX | Stock Appreciation Right | Common Stock (100,000) | $5.95 | Sept. 26, 2029 | 100,000 | Acquired |
| Sept. 26, 2019 | NVAX | Stock Option (Right to Buy) | Common Stock (100,000) | $5.95 | Sept. 26, 2029 | 100,000 | Acquired |
| March 8, 2019 | NVAX | Restricted Stock Units | Common Stock (607,248) | — | — | 607,248 | Acquired |
| Dec. 13, 2018 | NVAX | Stock Option (Right to Buy) | Common Stock (1,970,000) | $2.30 | Dec. 13, 2028 | 1,970,000 | Acquired |
| Nov. 28, 2018 | BCRX | Non-Qualified Stock Option | Common Stock (8,333) | $1.49 | Dec. 22, 2018 | 8,333 | Disposed |
| June 20, 2018 | BCRX | Automatic Stock Option Grant [F1] | Common Stock (30,000) | $6.09 | June 20, 2028 | 30,000 | Acquired |
| Dec. 15, 2017 | NVAX | Stock Option (Right to Buy) | Common Stock (1,650,000) | $1.38 | Dec. 15, 2027 | 1,650,000 | Acquired |
| May 24, 2017 | BCRX | Automatic Stock Option Grant [F1] | Common Stock (30,000) | $5.13 | May 24, 2027 | 30,000 | Acquired |
| Nov. 14, 2016 | NVAX | Stock Option (Right to Buy) | Common Stock (550,000) | $1.35 | Nov. 14, 2026 | 550,000 | Acquired |
| Nov. 14, 2016 | NVAX | Stock Option (Right to Buy) | Common Stock (550,000) | $1.35 | Nov. 14, 2026 | 550,000 | Acquired |
| May 23, 2016 | BCRX | Automatic Stock Option Grant [F1] | Common Stock (30,000) | $3.22 | May 23, 2026 | 30,000 | Acquired |
| March 31, 2016 | NVAX | Stock Option (Right to buy) | Common Stock (201,991) | $1.28 | March 1, 2022 | 201,991 | Disposed |
| March 30, 2016 | NVAX | Stock Option (Right to buy) | Common Stock (198,009) | $1.28 | March 1, 2022 | 198,009 | Disposed |
| March 15, 2016 | NVAX | Stock Option (Right to buy) | Common Stock (900,000) | $4.99 | March 5, 2026 | 900,000 | Acquired |
| May 20, 2015 | BCRX | Automatic Stock Option Grant [F1] | Common Stock (15,000) | $11.39 | May 20, 2025 | 15,000 | Acquired |
| March 5, 2015 | NVAX | Stock Option (Right to buy) | Common Stock (900,000) | $8.94 | March 5, 2025 | 900,000 | Acquired |
| May 2, 2014 | BCRX | Automatic Stock Option Grant [F1] | Common Stock (15,000) | $8.47 | May 2, 2024 | 15,000 | Acquired |
| March 6, 2014 | NVAX | Stock Option (Right to buy) | Common Stock (900,000) | $6.05 | March 6, 2024 | 900,000 | Acquired |
| May 31, 2013 | BCRX | Automatic Stock Option Grant [F1] | Common Stock (15,000) | $1.71 | May 31, 2023 | 15,000 | Acquired |
| March 2, 2013 | NVAX | Options-right to buy | Common Stock (900,000) | $1.83 | March 2, 2023 | 900,000 | Acquired |
| May 23, 2012 | BCRX | Automatic Stock Option Grant [F1] | Common Stock (15,000) | $3.32 | May 23, 2022 | 15,000 | Acquired |
| March 1, 2012 | NVAX | Options-right to buy | Common Stock (900,000) | $1.28 | March 1, 2022 | 900,000 | Acquired |
| June 22, 2011 | NVAX | Options-right to buy | Common Stock (850,000) | $1.99 | June 22, 2021 | 850,000 | Acquired |
| May 12, 2011 | BCRX | Non-Qualified Stock Option [F1] | Common Stock (15,000) | $3.56 | May 12, 2021 | 15,000 | Acquired |
| May 13, 2010 | BCRX | Non-Qualified Stock Option [F1] | Common Stock (15,000) | $7.01 | May 13, 2020 | 15,000 | Acquired |
| Feb. 15, 2010 | NVAX | Stock Option - right to buy | Common Stock (300,000) | $2.40 | Feb. 15, 2020 | 300,000 | Acquired |
| June 24, 2009 | NVAX | Stock Option (right to buy) | Common Stock (20,000) | $2.44 | June 24, 2019 | 20,000 | Acquired |
| April 30, 2009 | BCRX | Non-Qualified Stock Option [F1] | Common Stock (15,000) | $3.96 | April 30, 2019 | 15,000 | Acquired |
| Dec. 22, 2008 | BCRX | Non-Qualified Stock Option | Common Stock (8,333) | $1.49 | Dec. 22, 2018 | 8,333 | 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 |
|---|---|---|---|---|
| July 29, 2021 | MXCT | Common Stock | 247,751 | Direct |
| July 29, 2021 | MXCT | Stock Option (right to buy)→ Common Stock (143,067) | 143,067 | Direct |
| July 29, 2021 | MXCT | Stock Option (right to buy)→ Common Stock (20,400) | 20,400 | Direct |
| July 29, 2021 | MXCT | Stock Option (right to buy)→ Common Stock (23,900) | 23,900 | Direct |
| July 29, 2021 | MXCT | Stock Option (right to buy)→ Common Stock (23,900) | 23,900 | Direct |
| July 29, 2021 | MXCT | Stock Option (right to buy)→ Common Stock (26,900) | 26,900 | Direct |
| July 29, 2021 | MXCT | Stock Option (right to buy)→ Common Stock (26,900) | 26,900 | Direct |
| July 29, 2021 | MXCT | Stock Option (right to buy)→ Common Stock (26,900) | 26,900 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2023 | $50,897 | — | — | — | — | — | $584,799 | $3,827,483 |
| 2022 | $749,750 | — | — | — | $305,898 | — | $34,669 | $8,401,283 |
| 2019 | $642,720 | — | $431,631 | $986,660 | $366,351 | — | $11,200 | $2,438,562 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.