SERA PROGNOSTICS, INC.
SERA · Services-Medical Laboratories · 29.3M shares · +115%/yr ↑ dilution · EDGAR filings ↗
Reference price $2.01 · est. market cap ~$59M — last insider sale, 2026-06-11 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)
Grade
D42Women's-health diagnostics (PreTRM) with a negative gross margin and deep losses.
Strengths
- Some liquidity — current ratio 1.7 (34th)
Risks
- Negative gross margin, deep losses — gross margin -102%, operating margin -45067%
- Cash burn — FCF -$26M
- Reimbursement/adoption risk — per 10-K
Notable findings
- No interest coverageInterest coverage -4056.00 (cannot cover interest)
- Net lossNet loss (net margin -39417.3%)
- Cash burnNegative free cash flow (-26.3M)
- Exec changeRecent 8-K item 5.02 8-K ↗
- Fund exitedNotable fund(s) exited this quarter: VANGUARD GROUP INC
- Chronic dilutionShare count +115%/yr over 4y (dilution, book value/share -97%)
- Notable holderHeld by 4 notable fund(s): CITADEL ADVISORS LLC, STATE STREET CORP, GOLDMAN SACHS GROUP INC +1 more (as of 2026-03-31)
- Insider sellingInsider selling — 24 open-market sale(s) by 9 insider(s) (cluster of 9 insiders, last 6mo) Form 4 ↗
Quarterly revenue
Last 4 quarters · from SEC filings.
Key metrics
Gross margin
-102.5%
Operating margin
-45066.7%
Net margin
-39417.3%
Return on equity
-42.3%
Return on assets
-31.3%
Revenue growth (QoQ)
40.0%
Interest coverage
-4056.0×
Current ratio
1.7×
Free cash flow
-$26M
EBITDA
-$36M
Tangible book value
$74M
Cash & investments
$96M
Cash runway
14q
Stock comp / revenue
6308.6%
Insider transactions · last 18 months
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 2026-06-11 | Inglis Tiffany Eul Davis | Sell | 362 | $2.01 |
| 2026-06-11 | Anderson Dyaarl Lee Jr. | Sell | 4.7K | $2.01 |
| 2026-06-11 | Aerts Austin | Sell | 2.0K | $2.01 |
| 2026-06-11 | Lindgardt Zhenya | Sell | 7.0K | $2.01 |
| 2026-06-11 | Jackson Benjamin | Sell | 2.2K | $2.01 |
| 2026-06-09 | Aerts Austin | Sell | 5.4K | $2.08 |
| 2026-06-09 | Lindgardt Zhenya | Sell | 21K | $2.08 |
| 2026-06-08 | Lawrence Sandra AJ | Sell | 1.6K | $2.15 |
| 2026-05-29 | Anderson Dyaarl Lee Jr. | Grant | 3.2K | $1.84 |
| 2026-05-29 | Jackson Benjamin | Grant | 5.0K | $1.84 |
| 2026-03-12 | Lindgardt Zhenya | Grant | 154K | — |
| 2026-03-12 | Jackson Benjamin | Grant | 44K | — |
| 2026-03-12 | Inglis Tiffany Eul Davis | Grant | 17K | — |
| 2026-03-12 | Anderson Dyaarl Lee Jr. | Grant | 12K | — |
| 2026-03-12 | Aerts Austin | Grant | 44K | — |
| 2026-03-11 | Boniface John J. | Sell | 1.5K | $2.04 |
| 2026-03-11 | Lindgardt Zhenya | Sell | 3.0K | $2.04 |
| 2026-03-11 | Kearney Paul | Sell | 1.4K | $2.04 |
| 2026-03-11 | Jackson Benjamin | Sell | 1.0K | $2.04 |
| 2026-03-11 | Harrison Robert Gardner | Sell | 716 | $2.04 |
| 2026-03-11 | Aerts Austin | Sell | 1.0K | $2.04 |
| 2026-03-10 | Aerts Austin | Sell | 6.1K | $1.90 |
| 2026-03-10 | Lindgardt Zhenya | Sell | 23K | $1.90 |
| 2026-03-09 | Kearney Paul | Sell | 2.0K | $1.96 |
| 2026-03-09 | Jackson Benjamin | Sell | 3.1K | $1.96 |
| 2026-03-09 | Harrison Robert Gardner | Sell | 3.4K | $1.96 |
| 2026-03-09 | Boniface John J. | Sell | 3.0K | $1.96 |
| 2026-03-09 | Aerts Austin | Sell | 674 | $1.96 |
| 2026-03-06 | Lawrence Sandra AJ | Sell | 1.6K | $1.95 |
| 2026-02-24 | Harrison Robert Gardner | Sell | 2.0K | $2.34 |
| 2026-02-04 | Kamdar Kim P. | Other | 31K | — |
| 2026-02-04 | Kamdar Kim P. | Other | 3.2K | — |
| 2026-01-27 | Harrison Robert Gardner | Sell | 2.0K | $2.97 |
| 2025-12-30 | Harrison Robert Gardner | Sell | 2.0K | $3.00 |
| 2025-12-10 | Lindgardt Zhenya | Sell | 4.2K | $3.31 |
| 2025-12-10 | Kearney Paul | Sell | 1.2K | $3.31 |
| 2025-12-10 | Jackson Benjamin | Sell | 892 | $3.31 |
| 2025-12-10 | Harrison Robert Gardner | Sell | 616 | $3.31 |
| 2025-12-10 | Boniface John J. | Sell | 1.3K | $3.31 |
| 2025-12-10 | Aerts Austin | Sell | 873 | $3.31 |
| 2025-12-09 | Lindgardt Zhenya | Sell | 28K | $3.04 |
| 2025-12-09 | Aerts Austin | Sell | 5.2K | $3.04 |
| 2025-12-08 | Lawrence Sandra AJ | Sell | 1.6K | $3.05 |
| 2025-12-05 | Mirza Mansoor Raza | Sell | 292 | $3.05 |
| 2025-12-02 | Harrison Robert Gardner | Sell | 2.0K | $2.93 |
| 2025-12-02 | Kearney Paul | Option exercise | 32K | $1.62 |
| 2025-12-02 | Kearney Paul | Sell | 32K | $2.94 |
| 2025-11-26 | Kearney Paul | Option exercise | 2.0K | $1.62 |
| 2025-11-26 | Kearney Paul | Sell | 2.0K | $3.51 |
| 2025-11-10 | Lindgardt Zhenya | Sell | 12K | $2.62 |
| 2025-11-10 | Kearney Paul | Sell | 7.1K | $2.62 |
| 2025-11-10 | Jackson Benjamin | Sell | 7.1K | $2.62 |
| 2025-11-10 | Harrison Robert Gardner | Sell | 6.5K | $2.62 |
| 2025-11-10 | Boniface John J. | Sell | 7.8K | $2.62 |
| 2025-11-10 | Aerts Austin | Sell | 6.4K | $2.62 |
| 2025-11-05 | Mirza Mansoor Raza | Sell | 221 | $3.04 |
| 2025-11-04 | Harrison Robert Gardner | Sell | 2.0K | $3.07 |
| 2025-10-15 | Inglis Tiffany Eul Davis | Grant | 75K | — |
| 2025-10-07 | Harrison Robert Gardner | Sell | 2.0K | $3.18 |
| 2025-10-06 | Mirza Mansoor Raza | Sell | 227 | $3.16 |
| 2025-09-11 | Lindgardt Zhenya | Sell | 3.2K | $3.13 |
| 2025-09-11 | Kearney Paul | Sell | 1.3K | $3.13 |
| 2025-09-11 | Jackson Benjamin | Sell | 934 | $3.13 |
| 2025-09-11 | Harrison Robert Gardner | Sell | 645 | $3.13 |
| 2025-09-11 | Boniface John J. | Sell | 1.4K | $3.13 |
| 2025-09-11 | Aerts Austin | Sell | 915 | $3.13 |
| 2025-09-09 | Lawrence Sandra AJ | Sell | 1.6K | $3.05 |
| 2025-09-09 | Aerts Austin | Sell | 5.3K | $3.15 |
| 2025-09-09 | Lindgardt Zhenya | Sell | 21K | $3.15 |
| 2025-09-09 | Harrison Robert Gardner | Sell | 2.0K | $3.05 |
| 2025-09-09 | Lawrence Sandra AJ | Sell | 3.9K | $3.05 |
| 2025-09-05 | Mirza Mansoor Raza | Sell | 222 | $3.35 |
| 2025-09-02 | Kearney Paul | Sell | 1.5K | $3.49 |
| 2025-08-29 | Kearney Paul | Sell | 11K | $3.49 |
| 2025-08-20 | Harrison Robert Gardner | Sell | 6.0K | $2.22 |
| 2025-08-08 | Aerts Austin | Sell | 5.8K | $2.54 |
| 2025-08-08 | Lindgardt Zhenya | Sell | 8.6K | $2.54 |
| 2025-08-08 | Kearney Paul | Sell | 6.5K | $2.54 |
| 2025-08-08 | Boniface John J. | Sell | 7.1K | $2.54 |
| 2025-08-08 | Jackson Benjamin | Sell | 6.4K | $2.54 |
| 2025-08-08 | Harrison Robert Gardner | Sell | 6.0K | $2.54 |
| 2025-08-05 | Mirza Mansoor Raza | Sell | 225 | $2.50 |
| 2025-07-07 | Mirza Mansoor Raza | Sell | 234 | $2.36 |
| 2025-06-23 | Anderson Dyaarl Lee Jr. | Grant | 67K | — |
| 2025-06-10 | Boniface John J. | Sell | 1.4K | $1.48 |
| 2025-06-10 | Jackson Benjamin | Sell | 965 | $1.48 |
| 2025-06-10 | Lindgardt Zhenya | Sell | 3.3K | $1.48 |
| 2025-06-10 | Kearney Paul | Sell | 1.3K | $1.48 |
| 2025-06-10 | Aerts Austin | Sell | 945 | $1.48 |
| 2025-06-10 | Harrison Robert Gardner | Sell | 667 | $1.48 |
| 2025-06-09 | Lindgardt Zhenya | Sell | 23K | $1.43 |
| 2025-06-09 | Aerts Austin | Sell | 5.7K | $1.43 |
| 2025-06-06 | Mirza Mansoor Raza | Sell | 107 | $1.58 |
| 2025-06-05 | Barlow Jane F | Grant | 16K | — |
| 2025-06-05 | Trimble Ryan | Grant | 16K | — |
| 2025-06-05 | Phillips Joshua | Grant | 16K | — |
| 2025-06-05 | Mirza Mansoor Raza | Grant | 16K | — |
| 2025-06-05 | Kamdar Kim P. | Grant | 16K | — |
| 2025-06-05 | CRITCHFIELD GREGORY C | Grant | 16K | — |
| 2025-06-05 | Lawrence Sandra AJ | Grant | 16K | — |
| 2025-05-30 | Jackson Benjamin | Grant | 3.7K | $1.33 |
| 2025-05-30 | Boniface John J. | Grant | 3.7K | $1.33 |
| 2025-05-08 | Kearney Paul | Sell | 7.1K | $2.44 |
| 2025-05-08 | Jackson Benjamin | Sell | 7.1K | $2.44 |
| 2025-05-08 | Harrison Robert Gardner | Sell | 6.6K | $2.44 |
| 2025-05-08 | Boniface John J. | Sell | 5.1K | $2.44 |
| 2025-05-08 | Aerts Austin | Sell | 6.4K | $2.44 |
| 2025-05-08 | Lindgardt Zhenya | Sell | 9.4K | $2.44 |
| 2025-05-08 | Mirza Mansoor Raza | Sell | 106 | $2.44 |
| 2025-04-07 | Mirza Mansoor Raza | Sell | 107 | $3.35 |
| 2025-03-20 | Elliott Jeffrey Thomas | Grant | 31K | — |
| 2025-03-07 | Lindgardt Zhenya | Sell | 30K | $4.12 |
| 2025-03-07 | Harrison Robert Gardner | Sell | 3.9K | $4.16 |
| 2025-03-07 | Aerts Austin | Sell | 4.8K | $4.12 |
| 2025-03-06 | Jackson Benjamin | Sell | 2.3K | $4.16 |
| 2025-03-06 | Harrison Robert Gardner | Sell | 3.3K | $4.16 |
| 2025-03-06 | Lindgardt Zhenya | Grant | 127K | — |
| 2025-03-06 | Mirza Mansoor Raza | Sell | 99 | $4.16 |
| 2025-03-06 | Aerts Austin | Sell | 540 | $4.16 |
| 2025-03-06 | Kearney Paul | Sell | 1.3K | $4.16 |
| 2025-03-06 | Boniface John J. | Sell | 2.0K | $4.16 |
| 2025-03-05 | Boniface John J. | Grant | 47K | — |
| 2025-03-05 | Kearney Paul | Grant | 47K | — |
| 2025-03-05 | Jackson Benjamin | Grant | 35K | — |
| 2025-03-05 | Harrison Robert Gardner | Grant | 26K | — |
| 2025-03-05 | Aerts Austin | Grant | 38K | — |
| 2025-02-13 | Jackson Benjamin | Sell | 5.9K | $4.58 |
| 2025-02-13 | Harrison Robert Gardner | Sell | 3.6K | $4.28 |
| 2025-02-12 | Harrison Robert Gardner | Sell | 7.3K | $4.58 |
| 2025-02-12 | Boniface John J. | Sell | 5.9K | $4.58 |
| 2025-02-12 | Lindgardt Zhenya | Sell | 14K | $4.58 |
| 2025-02-12 | Kearney Paul | Sell | 5.3K | $4.58 |
| 2025-02-12 | Aerts Austin | Sell | 5.9K | $4.58 |
| 2025-02-12 | Mirza Mansoor Raza | Sell | 101 | $4.58 |
| 2025-02-11 | Harrison Robert Gardner | Sell | 554 | $3.97 |
| 2025-01-27 | Mirza Mansoor Raza | Option exercise | 38K | $0.91 |
| 2025-01-14 | Phillips Joshua | Sell | 1.8K | $6.29 |
| 2025-01-14 | Phillips Joshua | Sell | 2.7K | $6.29 |
| 2025-01-14 | Jackson Benjamin | Sell | 8.4K | $6.20 |
| 2025-01-14 | Phillips Joshua | Sell | 2 | $6.29 |
| 2025-01-14 | Phillips Joshua | Sell | 4.8K | $6.29 |
| 2025-01-13 | Harrison Robert Gardner | Sell | 2.3K | $6.47 |
| 2025-01-13 | Phillips Joshua | Sell | 6.3K | $6.39 |
| 2025-01-13 | Phillips Joshua | Sell | 2.4K | $6.39 |
| 2025-01-13 | Jackson Benjamin | Sell | 7.9K | $6.38 |
| 2025-01-13 | Phillips Joshua | Sell | 3.5K | $6.39 |
| 2025-01-13 | Phillips Joshua | Sell | 3 | $6.39 |
| 2025-01-10 | Phillips Joshua | Sell | 1.9K | $7.18 |
| 2025-01-10 | Phillips Joshua | Sell | 2 | $7.18 |
| 2025-01-10 | Phillips Joshua | Sell | 1 | $8.03 |
| 2025-01-10 | Phillips Joshua | Sell | 4.9K | $7.18 |
| 2025-01-10 | Phillips Joshua | Sell | 1.7K | $8.03 |
| 2025-01-10 | Phillips Joshua | Sell | 643 | $8.03 |
| 2025-01-10 | Phillips Joshua | Sell | 2.7K | $7.18 |
| 2025-01-10 | Phillips Joshua | Sell | 921 | $8.03 |
| 2025-01-10 | Jackson Benjamin | Sell | 12K | $7.36 |
| 2025-01-10 | Jackson Benjamin | Sell | 1.2K | $8.05 |
| 2025-01-10 | Harrison Robert Gardner | Sell | 12K | $7.30 |
| 2025-01-10 | Harrison Robert Gardner | Sell | 1.8K | $8.01 |
| 2025-01-10 | Kearney Paul | Sell | 12K | $7.36 |
| 2025-01-10 | Kearney Paul | Sell | 1.1K | $8.06 |
| 2025-01-10 | Aerts Austin | Sell | 2.4K | $8.06 |
| 2025-01-06 | Mirza Mansoor Raza | Sell | 100 | $7.69 |
All non-derivative Form 4 activity (SEC), newest first.
Clinical trials
| Trial | Title | Phase | Status | Primary completion |
|---|---|---|---|---|
| NCT04301518 ↗ | Prematurity Risk Assessment Combined With Clinical Interventions for Improving Neonatal outcoMEs Preterm Labor, Preterm Birth | NA | Active Not Recruiting | 2024-12-06 |
| NCT02787213 ↗ | A Multicenter Assessment of a Spontaneous Preterm Birth Risk Predictor Preterm Birth | — | Completed | 2019-06-01 |
| NCT01371019 ↗ | Proteomic Assessment of Preterm Birth Preterm Birth | — | Completed | 2014-12-01 |
Source: ClinicalTrials.gov (U.S. NIH) · active studies first.
Notable events (8-K)
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 8-K | 2026-06-04 | 2026-06-04 | 0001534969-26-000032 ↗ |
| 8-K | 2026-06-01 | 2026-05-26 | 0001534969-26-000028 ↗ |
| 10-Q | 2026-05-06 | 2026-03-31 | 0001534969-26-000025 ↗ |
| 8-K | 2026-05-06 | 2026-05-06 | 0001534969-26-000024 ↗ |
| 10-K | 2026-03-18 | 2025-12-31 | 0001534969-26-000009 ↗ |
| 8-K | 2026-03-18 | 2026-03-18 | 0001534969-26-000008 ↗ |
| 8-K | 2026-01-08 | 2026-01-08 | 0001193125-26-007850 ↗ |
| 8-K | 2026-01-07 | 2026-01-07 | 0001193125-26-005531 ↗ |
| 8-K | 2025-11-24 | 2025-11-24 | 0001193125-25-292074 ↗ |
| 10-Q | 2025-11-13 | 2025-09-30 | 0001193125-25-280182 ↗ |
| 8-K | 2025-11-13 | 2025-11-13 | 0001193125-25-280167 ↗ |
| 8-K | 2025-09-05 | 2025-09-05 | 0001534969-25-000005 ↗ |