Who
Gregory C. Critchfield
Director
Company insider
Files Form 4 as: Chief Executive Officer, Sera Prognostics; President Myriad Genetic Labs, Myriad Genetics.
In numbers
- Trades disclosed
- 77
- Buys
- 0
- Sells
- 7
- Bought
- $0
- Sold
- $9.0M
- Companies
- 2
- Companies where not an officer
- 0
- First trade
- 16 Feb 2006
- Last trade
- 10 Jul 2026
- Last filed
- 14 Jul 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code A | —22,426 at $0.00 | filing |
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code A | —1,594 at $0.00 | filing |
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —34,494 at $0.00 | filing |
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —34,494 at $0.00 | filing |
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —2,452 at $0.00 | filing |
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —2,452 at $0.00 | filing |
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code A | —22,426 at $0.00 | filing |
| 10 Jul 2026filed 14 Jul 2026 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code A | —1,594 at $0.00 | filing |
| 5 Jun 2025filed 6 Jun 2025 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —25,000 at $0.00 | filing |
| 5 Jun 2025filed 6 Jun 2025 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code A | —15,596 at $0.00 | filing |
| 6 Jun 2024filed 7 Jun 2024 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —10,549 at $0.00 | filing |
| 6 Jun 2024filed 7 Jun 2024 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code A | —7,117 at $0.00 | filing |
| 3 Jun 2024filed 5 Jun 2024 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code J | —195 at $0.00 | filing |
| 3 Jun 2024filed 5 Jun 2024 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code J | —13 at $0.00 | filing |
| 7 Mar 2023filed 7 Mar 2023 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —98,300 at $0.00 | filing |
| 7 Mar 2023filed 7 Mar 2023 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code A | —62,200 at $0.00 | filing |
| 23 Mar 2022filed 25 Mar 2022 | SERA Sera Prognosticsoption or derivative · Diagnostics & Labs | SEC FORM 4 Code A | —429,225 at $0.00 | filing |
| 19 Jul 2021filed 21 Jul 2021 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code C | —34,383 | filing |
| 19 Jul 2021filed 21 Jul 2021 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code C | —5,253 | filing |
| 19 Jul 2021filed 21 Jul 2021 | SERA Sera PrognosticsDiagnostics & Labs | SEC FORM 4 Code C | —11,880 | filing |
News
FinancialContent - Myriad Genetics (MYGN) Stock Trades Up, Here Is WhyMYGN · financialcontent.com · 20 Oct 2026Labcorp To Buy Myriad Genetics' Prenatal Testing Business For $210 MlnMYGN · finanzen.ch · 20 Oct 2026Myriad Genetics and Labcorp Announce Definitive Agreement for Myriad to Sell Prenatal Health Testing Business to LabcorpMYGN · manilatimes.net · 20 Oct 2026
0 headlines in the last 90 days name Gregory C. Critchfield; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.