GERNGERON CORP
- Market cap
- $719.57M
- as of 2026-10-23
- Latest close
- $1.12
- as of 2026-10-23
- Sector
- Healthcare
- as of 2026-10-24
- Industry
- Biotechnology
- as of 2026-10-24
Cluster
No cluster in the last 90 days under the default rule (14d · ≥2 insiders · all roles).
Form 4 historysince 2023-10-02
Dashed line = amended filing (Form 4/A)
| Insider | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| Spiegel Robert J. | Sep 30 | Oct 1 | A | 6,351 | $1.23 | $7,812 | 212,161 | No | Form 4 |
| Spiegel Robert J. | Jun 30 | Jul 1 | A | 6,103 | $1.28 | $7,812 | 205,810 | No | Form 4 |
| Spiegel Robert J. | May 20 | May 26 | A · derivative | 220,000 | $1.26 | $277,200 | 220,000 | No | Form 4 |
| Molineaux Susan | May 20 | May 26 | A · derivative | 220,000 | $1.26 | $277,200 | 220,000 | No | Form 4 |
| Bir Dawn Carter | May 20 | May 26 | A · derivative | 220,000 | $1.26 | $277,200 | 220,000 | No | Form 4 |
| O'Farrell Elizabeth G. | May 20 | May 26 | A · derivative | 220,000 | $1.26 | $277,200 | 220,000 | No | Form 4 |
| McDonald John F | May 20 | May 26 | A · derivative | 220,000 | $1.26 | $277,200 | 220,000 | No | Form 4 |
| Williams TimothyEVP and Chief Legal Officer | Apr 13 | Apr 14 | A · derivative | 2,500,000 | $1.73 | $4,325,000 | 2,500,000 | No | Form 4 |
| Spiegel Robert J. | Mar 31 | Apr 1 | A | 5,243 | $1.49 | $7,812 | 199,707 | No | Form 4 |
| Andrews Patricia S | Mar 25 | Mar 26 | A · derivative | 270,000 | $1.57 | $423,900 | 270,000 | No | Form 4 |
| Chinoporos Constantine | Mar 25 | Mar 26 | A · derivative | 270,000 | $1.57 | $423,900 | 270,000 | No | Form 4 |
| Robertson MichelleEVP, CHIEF FINANCIAL OFFICER | Feb 18 | Feb 19 | M | 27,500 | $0.00 | $0 | 27,500 | No | Form 4 |
| Robertson MichelleEVP, CHIEF FINANCIAL OFFICER | Feb 18 | Feb 19 | S | 9,855 | $1.94 | Sale −$19,119 | 17,645 | No | Form 4 |
| Robertson MichelleEVP, CHIEF FINANCIAL OFFICER | Feb 18 | Feb 19 | M · derivative | 27,500 | $0.00 | $0 | 82,500 | No | Form 4 |
| Robertson MichelleEVP, CHIEF FINANCIAL OFFICER | Feb 17 | Feb 19 | A · derivative | 1,660,000 | $1.80 | $2,988,000 | 1,660,000 | No | Form 4 |
| Eid JosephEVP, R&D; Chief Medical Office | Feb 17 | Feb 19 | A · derivative | 2,220,000 | $1.80 | $3,996,000 | 2,220,000 | No | Form 4 |
| Spiegel Robert J. | Dec 31, 2025 | Jan 5 | A | 5,918 | $1.32 | $7,812 | 194,464 | No | Form 4 |
| ElNawawi AhmedEVP, Chief Commercial Officer | Oct 20, 2025 | Oct 20, 2025 | A · derivative | 3,000,000 | $1.27 | $3,810,000 | 3,000,000 | No | Form 4 |
| Spiegel Robert J. | Sep 30, 2025 | Oct 1, 2025 | A | 5,702 | $1.37 | $7,812 | 188,546 | No | Form 4 |
| Semerjian HaroutPresident and CEO | Aug 7, 2025 | Aug 8, 2025 | A · derivative | 7,000,000 | $1.30 | $9,100,000 | 7,000,000 | No | Form 4 |
| Semerjian HaroutPresident and CEO | Aug 7, 2025 | Aug 8, 2025 | A · derivative | 4,000,000 | $1.30 | $5,200,000 | 4,000,000 | No | Form 4 |
| Spiegel Robert J. | Jun 30, 2025 | Jul 1, 2025 | A | 5,540 | $1.41 | $7,811 | 182,844 | No | Form 4 |
| Spiegel Robert J. | May 21, 2025 | May 22, 2025 | A · derivative | 180,000 | $1.34 | $241,200 | 180,000 | No | Form 4 |
| O'Farrell Elizabeth G. | May 21, 2025 | May 22, 2025 | A · derivative | 180,000 | $1.34 | $241,200 | 180,000 | No | Form 4 |
| Molineaux Susan | May 21, 2025 | May 22, 2025 | A · derivative | 180,000 | $1.34 | $241,200 | 180,000 | No | Form 4 |
| McDonald John F | May 21, 2025 | May 22, 2025 | A · derivative | 180,000 | $1.34 | $241,200 | 180,000 | No | Form 4 |
| Lawlis V Bryan | May 21, 2025 | May 22, 2025 | A · derivative | 180,000 | $1.34 | $241,200 | 180,000 | No | Form 4 |
| Bir Dawn CarterInterim President and CEO | May 21, 2025 | May 22, 2025 | A · derivative | 180,000 | $1.34 | $241,200 | 180,000 | No | Form 4 |
| Aggarwal Gaurav | May 21, 2025 | May 22, 2025 | A · derivative | 180,000 | $1.34 | $241,200 | 180,000 | No | Form 4 |
| Lawlis V Bryan | May 9, 2025 | May 13, 2025 | P | 13,300 | $1.18 | Purchase +$15,694 | 13,300 | No | Form 4 |
| Spiegel Robert J. | Mar 31, 2025 | Apr 2, 2025 | A | 4,913 | $1.59 | $7,812 | 177,304 | No | Form 4 |
| Spiegel Robert J. | Dec 31, 2024 | Apr 2, 20254/A | A | 2,206 | $3.54 | $7,809 | 172,391 | No | Form 4/A |
| Spiegel Robert J. | Sep 30, 2024 | Apr 2, 20254/A | A | 1,767 | $4.54 | $8,022 | 170,185 | No | Form 4/A |
| Spiegel Robert J. | Jun 28, 2024 | Apr 2, 20254/A | A | 1,916 | $4.24 | $8,124 | 168,418 | No | Form 4/A |
| Spiegel Robert J. | Mar 29, 2024 | Apr 2, 20254/A | A | 2,462 | $3.30 | $8,125 | 166,502 | No | Form 4/A |
| Ziegler JamesEVP, Chief Commercial Officer | Feb 27, 2025 | Mar 3, 2025 | P | 100,000 | $1.60 | Purchase +$160,000 | 100,000 | No | Form 4 |
| Scarlett John AChairman, President and CEO | Feb 27, 2025 | Mar 3, 2025 | P | 12,500 | $1.77 | Purchase +$22,125 | 12,500 | No | Form 4 |
| Samuels Scott AlanEVP, Chief Legal Officer | Feb 27, 2025 | Mar 3, 2025 | P | 15,000 | $1.61 | Purchase +$24,150 | 26,682 | No | Form 4 |
| Robertson MichelleEVP, Chief Financial Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 656,000 | $2.63 | $1,725,280 | 656,000 | No | Form 4 |
| Robertson MichelleEVP, Chief Financial Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 110,000 | $0.00 | $0 | 110,000 | No | Form 4 |
| Ziegler JamesEVP, Chief Commercial Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 529,000 | $2.63 | $1,391,270 | 529,000 | No | Form 4 |
| Ziegler JamesEVP, Chief Commercial Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 89,000 | $0.00 | $0 | 89,000 | No | Form 4 |
| Samuels Scott AlanEVP, Chief Legal Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 621,000 | $2.63 | $1,633,230 | 621,000 | No | Form 4 |
| Samuels Scott AlanEVP, Chief Legal Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 104,000 | $0.00 | $0 | 104,000 | No | Form 4 |
| Scarlett John AChairman, President and CEO | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 2,457,000 | $2.63 | $6,461,910 | 2,457,000 | No | Form 4 |
| Scarlett John AChairman, President and CEO | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 410,000 | $0.00 | $0 | 410,000 | No | Form 4 |
| Grethlein Andrew JEVP, Chief Operating Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 839,000 | $2.63 | $2,206,570 | 839,000 | No | Form 4 |
| Grethlein Andrew JEVP, Chief Operating Officer | Feb 18, 2025 | Feb 20, 2025 | A · derivative | 140,000 | $0.00 | $0 | 140,000 | No | Form 4 |
| Eid JosephEVP, Research and Development | Nov 11, 2024 | Nov 12, 2024 | A · derivative | 2,500,000 | $4.12 | $10,300,000 | 2,500,000 | No | Form 4 |
| Ziegler JamesEVP, Chief Commercial Officer | Sep 9, 2024 | Sep 9, 2024 | A · derivative | 1,600,000 | $4.41 | $7,056,000 | 1,600,000 | No | Form 4 |
| Grethlein Andrew JEVP, Chief Operating Officer | Jul 8, 2024 | Jul 10, 2024 | M | 674,348 | $1.72 | $1,159,879 | 674,348 | No | Form 4 |
| Grethlein Andrew JEVP, Chief Operating Officer | Jul 8, 2024 | Jul 10, 2024 | S | 674,348 | $4.56 | Sale −$3,075,027 | not reported | No | Form 4 |
| Grethlein Andrew JEVP, Chief Operating Officer | Jul 8, 2024 | Jul 10, 2024 | M · derivative | 221,544 | $1.72 | $381,056 | not reported | No | Form 4 |
| Grethlein Andrew JEVP, Chief Operating Officer | Jul 8, 2024 | Jul 10, 2024 | M · derivative | 452,804 | $1.72 | $778,823 | not reported | No | Form 4 |
| Kapur AnilEVP, Corp Strategy & CCO | Jun 10, 2024 | Jun 12, 2024 | M | 421,875 | $1.06 | $447,188 | 421,875 | No | Form 4 |
| Kapur AnilEVP, Corp Strategy & CCO | Jun 10, 2024 | Jun 12, 2024 | S | 421,875 | $4.65 | Sale −$1,961,719 | not reported | No | Form 4 |
| Kapur AnilEVP, Corp Strategy & CCO | Jun 10, 2024 | Jun 12, 2024 | M · derivative | 421,875 | $1.06 | $447,188 | 328,125 | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 10, 2024 | Jun 12, 2024 | M | 112,500 | $1.06 | $119,250 | 112,500 | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 10, 2024 | Jun 12, 2024 | M | 20,000 | $1.06 | $21,200 | 20,000 | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 10, 2024 | Jun 12, 2024 | M | 155,400 | $1.30 | $202,020 | 155,400 | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 10, 2024 | Jun 12, 2024 | S | 287,900 | $4.63 | Sale −$1,332,977 | not reported | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 10, 2024 | Jun 12, 2024 | M · derivative | 112,500 | $1.06 | $119,250 | 87,500 | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 10, 2024 | Jun 12, 2024 | M · derivative | 20,000 | $1.06 | $21,200 | not reported | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 10, 2024 | Jun 12, 2024 | M · derivative | 155,400 | $1.30 | $202,020 | not reported | No | Form 4 |
| Grethlein Andrew JEVP, Chief Operating Officer | Jun 6, 2024 | Jun 7, 2024 | A · derivative | 452,804 | $1.72 | $778,823 | 452,804 | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 6, 2024 | Jun 7, 2024 | A · derivative | 50,000 | $1.06 | $53,000 | 50,000 | No | Form 4 |
| Feller FayeEVP, Chief Medical Officer | Jun 6, 2024 | Jun 7, 2024 | A · derivative | 200,000 | $1.93 | $386,000 | 200,000 | No | Form 4 |
| Robertson MichelleEVP, Chief Financial Officer | Jun 6, 2024 | Jun 7, 2024 | A · derivative | 250,000 | $2.17 | $542,500 | 250,000 | No | Form 4 |
| Samuels Scott AlanEVP, Chief Legal Officer | Jun 6, 2024 | Jun 7, 2024 | A · derivative | 250,000 | $3.21 | $802,500 | 250,000 | No | Form 4 |
| Scarlett John AChairman, President and CEO | Jun 6, 2024 | Jun 7, 2024 | A · derivative | 1,000,000 | $1.72 | $1,720,000 | 1,000,000 | No | Form 4 |
| Kapur AnilEVP, Corp Strategy & CCO | Jun 6, 2024 | Jun 7, 2024 | A · derivative | 250,000 | $1.43 | $357,500 | 250,000 | No | Form 4 |
| Scarlett John AChairman, President and CEO | Jun 4, 2024 | Jun 5, 2024 | M | 600,000 | $2.54 | $1,524,000 | 600,000 | No | Form 4 |
| Scarlett John AChairman, President and CEO | Jun 4, 2024 | Jun 5, 2024 | S | 600,000 | $4.00 | Sale −$2,400,000 | 600,000 | No | Form 4 |
| Scarlett John AChairman, President and CEO | Jun 4, 2024 | Jun 5, 2024 | M · derivative | 600,000 | $2.54 | $1,524,000 | not reported | No | Form 4 |
| Lawlis V Bryan | May 15, 2024 | May 17, 2024 | M | 35,000 | $1.94 | $67,900 | 35,000 | Yes | Form 4 |
| Lawlis V Bryan | May 15, 2024 | May 17, 2024 | S | 35,000 | $3.75 | Sale −$131,250 | not reported | Yes | Form 4 |
| Lawlis V Bryan | May 15, 2024 | May 17, 2024 | M · derivative | 35,000 | $1.94 | $67,900 | not reported | Yes | Form 4 |
| O'Farrell Elizabeth G. | May 9, 2024 | May 10, 2024 | A · derivative | 180,000 | $3.88 | $698,400 | 180,000 | No | Form 4 |
| Lawlis V Bryan | May 9, 2024 | May 10, 2024 | A · derivative | 180,000 | $3.88 | $698,400 | 180,000 | No | Form 4 |
| Bir Dawn Carter | May 9, 2024 | May 10, 2024 | A · derivative | 180,000 | $3.88 | $698,400 | 180,000 | No | Form 4 |
| McDonald John F | May 9, 2024 | May 10, 2024 | A · derivative | 180,000 | $3.88 | $698,400 | 180,000 | No | Form 4 |
| Molineaux Susan | May 9, 2024 | May 10, 2024 | A · derivative | 180,000 | $3.88 | $698,400 | 180,000 | No | Form 4 |
| Spiegel Robert J. | May 9, 2024 | May 10, 2024 | A · derivative | 180,000 | $3.88 | $698,400 | 180,000 | No | Form 4 |
| Aggarwal Gaurav | May 9, 2024 | May 10, 2024 | A · derivative | 180,000 | $3.88 | $698,400 | 180,000 | No | Form 4 |
| Scarlett John ACHAIRMAN, PRESIDENT AND CEO | Feb 14, 2024 | Feb 16, 2024 | A · derivative | 3,000,000 | $2.10 | $6,300,000 | 3,000,000 | No | Form 4 |
| Grethlein Andrew JEVP, CHIEF OPERATING OFFICER | Feb 14, 2024 | Feb 16, 2024 | A · derivative | 1,200,000 | $2.10 | $2,520,000 | 1,200,000 | No | Form 4 |
| Robertson MichelleEVP, CHIEF FINANCIAL OFFICER | Feb 14, 2024 | Feb 16, 2024 | A · derivative | 850,000 | $2.10 | $1,785,000 | 850,000 | No | Form 4 |
| Samuels Scott AlanEVP & CHIEF LEGAL OFFICER | Feb 14, 2024 | Feb 16, 2024 | A · derivative | 850,000 | $2.10 | $1,785,000 | 850,000 | No | Form 4 |
| Kapur AnilEVP, CORP STRATEGY & CCO | Feb 14, 2024 | Feb 16, 2024 | A · derivative | 750,000 | $2.10 | $1,575,000 | 750,000 | No | Form 4 |
| Feller FayeEVP, CHIEF MEDICAL OFFICER | Feb 14, 2024 | Feb 16, 2024 | A · derivative | 750,000 | $2.10 | $1,575,000 | 750,000 | No | Form 4 |
| Aggarwal Gaurav | Dec 29, 2023 | Jan 3, 2024 | A | 1,970 | $0.00 | $0 | 1,970 | No | Form 4 |
| Molineaux Susan | Dec 29, 2023 | Jan 3, 2024 | A | 6,220 | $0.00 | $0 | 130,527 | No | Form 4 |
| Spiegel Robert J. | Dec 29, 2023 | Jan 3, 2024 | A | 3,406 | $0.00 | $0 | 164,040 | No | Form 4 |
| Aggarwal Gaurav | Nov 26, 2023 | Nov 28, 2023 | A · derivative | 200,000 | $1.97 | $394,000 | 200,000 | No | Form 4 |
| Spiegel Robert J. | Sep 29, 2023 | Oct 2, 2023 | A | 3,390 | $0.00 | $0 | 160,634 | No | Form 4 |
| Molineaux Susan | Sep 29, 2023 | Oct 2, 2023 | A | 6,191 | $0.00 | $0 | 124,307 | No | Form 4 |