SERA PROGNOSTICS, INC.
Total Trades
112
Buys
1
Sells
102
Largest Trade
N/A
Insiders
9
Institutional Funds
40
Inst. Value
$1M+
Activist Filings
23
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 2K | $2.34 | Feb 24, 2026 |
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 2K | $2.97 | Jan 27, 2026 |
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 2K | $3.00 | Dec 30, 2025 |
| Lindgardt Zhenya | CEO | SELL | $1K–$15K | 4K | $3.31 | Dec 12, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $1K–$15K | 1K | $3.31 | Dec 12, 2025 |
| Jackson Benjamin | General Counsel | SELL | $1K–$15K | 892 | $3.31 | Dec 12, 2025 |
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 616 | $3.31 | Dec 12, 2025 |
| Boniface John J. | Chief Scientific O… | SELL | $1K–$15K | 1K | $3.31 | Dec 12, 2025 |
| Aerts Austin | CFO | SELL | $1K–$15K | 873 | $3.31 | Dec 12, 2025 |
| Lindgardt Zhenya | CEO | SELL | $50K–$100K | 28K | $3.04 | Dec 11, 2025 |
| Aerts Austin | CFO | SELL | $15K–$50K | 5K | $3.04 | Dec 11, 2025 |
| Lawrence Sandra AJ | Director | SELL | $1K–$15K | 2K | $3.05 | Dec 9, 2025 |
| Mirza Mansoor Raza | Director | SELL | <$1K | 292 | $3.05 | Dec 5, 2025 |
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 2K | $2.93 | Dec 3, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $50K–$100K | 32K | $2.94 | Dec 3, 2025 |
| Kearney Paul | Chief Data Officer | EXERCISE | $50K–$100K | 32K | $1.62 | Dec 3, 2025 |
| Kearney Paul | Chief Data Officer | EXERCISE | $1K–$15K | 2K | $1.62 | Nov 26, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $1K–$15K | 2K | $3.51 | Nov 26, 2025 |
| Lindgardt Zhenya | CEO | SELL | $15K–$50K | 12K | $2.62 | Nov 12, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $15K–$50K | 7K | $2.62 | Nov 12, 2025 |
| Jackson Benjamin | General Counsel | SELL | $15K–$50K | 7K | $2.62 | Nov 12, 2025 |
| Harrison Robert Gardner | Chief Information … | SELL | $15K–$50K | 7K | $2.62 | Nov 12, 2025 |
| Boniface John J. | Chief Scientific O… | SELL | $15K–$50K | 8K | $2.62 | Nov 12, 2025 |
| Aerts Austin | CFO | SELL | $15K–$50K | 6K | $2.62 | Nov 12, 2025 |
| Mirza Mansoor Raza | Director | SELL | <$1K | 221 | $3.04 | Nov 6, 2025 |
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 2K | $3.07 | Nov 4, 2025 |
| Lindgardt Zhenya | CEO | SELL | $1K–$15K | 3K | $3.13 | Sep 12, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $1K–$15K | 1K | $3.13 | Sep 12, 2025 |
| Jackson Benjamin | General Counsel | SELL | $1K–$15K | 934 | $3.13 | Sep 12, 2025 |
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 645 | $3.13 | Sep 12, 2025 |
| Boniface John J. | Chief Scientific O… | SELL | $1K–$15K | 1K | $3.13 | Sep 12, 2025 |
| Aerts Austin | CFO | SELL | $1K–$15K | 915 | $3.13 | Sep 12, 2025 |
| Lindgardt Zhenya | CEO | SELL | $50K–$100K | 21K | $3.15 | Sep 9, 2025 |
| Aerts Austin | CFO | SELL | $15K–$50K | 5K | $3.15 | Sep 9, 2025 |
| Lawrence Sandra AJ | Director | SELL | $1K–$15K | 4K | $3.05 | Sep 9, 2025 |
| Harrison Robert Gardner | Chief Information … | SELL | $1K–$15K | 2K | $3.05 | Sep 9, 2025 |
| Mirza Mansoor Raza | Director | SELL | <$1K | 222 | $3.35 | Sep 5, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $1K–$15K | 1K | $3.49 | Sep 3, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $15K–$50K | 11K | $3.49 | Sep 2, 2025 |
| Mirza Mansoor Raza | Director | SELL | <$1K | 234 | $2.36 | Jul 8, 2025 |
| Jackson Benjamin | General Counsel | SELL | $1K–$15K | 965 | $1.48 | Jun 12, 2025 |
| Boniface John J. | Chief Scientific O… | SELL | $1K–$15K | 1K | $1.48 | Jun 12, 2025 |
| Aerts Austin | CFO | SELL | $1K–$15K | 7K | $1.44 | Jun 12, 2025 |
| Kearney Paul | Chief Data Officer | SELL | $1K–$15K | 1K | $1.48 | Jun 12, 2025 |
| Harrison Robert Gardner | Chief Information … | SELL | <$1K | 667 | $1.48 | Jun 12, 2025 |
| Lindgardt Zhenya | CEO | SELL | $15K–$50K | 26K | $1.44 | Jun 12, 2025 |
| Mirza Mansoor Raza | Director | SELL | <$1K | 107 | $1.58 | Jun 6, 2025 |
| Mirza Mansoor Raza | Director | GRANT | N/A | 16K | — | Jun 6, 2025 |
| Mirza Mansoor Raza | Director | SELL | <$1K | 106 | $2.44 | May 9, 2025 |
| Lindgardt Zhenya | CEO | SELL | $15K–$50K | 9K | $2.44 | May 9, 2025 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 40 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Whetstone Capital Advisors, LLC | 3.5M | $1M+ | SH |
| Aberdeen Group plc | 2.3M | $1M+ | SH |
| Vivo Capital, LLC | 1.7M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 275K | $500K+ | SH |
| AWM Investment Company, Inc. | 207K | $500K+ | SH |
| VANGUARD GROUP INC | 170K | $500K+ | SH |
| STATE STREET CORP | 125K | $100K–$500K | SH |
| GSA CAPITAL PARTNERS LLP | 107K | $100K–$500K | SH |
| Bank of New York Mellon Corp | 73K | $100K–$500K | SH |
| Perigon Wealth Management, LLC | 73K | $100K–$500K | SH |
| MORGAN STANLEY | 72K | $100K–$500K | SH |
| Requisite Capital Management, LLC | 56K | $100K–$500K | SH |
| Twelve Points Wealth Management LLC | 43K | $100K–$500K | SH |
| Ballentine Partners, LLC | 50K | $100K–$500K | SH |
| HighTower Advisors, LLC | 42K | $100K–$500K | SH |
| Squarepoint Ops LLC | 36K | $100K–$500K | SH |
| GOLDMAN SACHS GROUP INC | 29K | $50K–$100K | SH |
| Birch Hill Investment Advisors LLC | 27K | $50K–$100K | SH |
| Cetera Investment Advisers | 25K | $50K–$100K | SH |
| JANE STREET GROUP, LLC | 24K | $50K–$100K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Whetstone Capital Advisors, LLC
SC 13G/A · Jan 16, 2026
9.2%
3.5M shares
Whetstone Capital Advisors, LLC
SC 13G · Sep 8, 2025
9.9%
3.6M shares
SC 13G/A · Aug 14, 2025
0.0%
0 shares
SC 13G · Aug 5, 2025
6.1%
2.2M shares
SC 13G/A · May 15, 2025
4.5%
1.7M shares
SC 13D/A · Feb 14, 2025
7.6%
2.6M shares
SC 13D · Feb 14, 2025
16.1%
5.5M shares
SC 13G/A · Nov 14, 2024
9.4%
3.0M shares
aMoon Growth Fund Limited Partnership
SC 13G/A · Nov 4, 2024
5.7%
1.9M shares
SC 13G · Apr 1, 2024
6.5%
2.0M shares
SC 13G/A · Feb 13, 2024
5.4%
1.7M shares
SC 13G/A · Jan 25, 2024
4.3%
1.3M shares
InterWest Partners X, LP (“ IWP X”)
SC 13G/A · Jan 19, 2024
0.4%
126K shares
SC 13G · Jan 10, 2024
17.9%
5.4M shares
aMoon Growth Fund Limited Partnership
SC 13G/A · Jan 3, 2024
9.5%
3.0M shares
InterWest Partners X, LP (“IWP X”)
SC 13G/A · Feb 10, 2023
8.5%
2.5M shares
aMoon Growth Fund Limited Partnership
SC 13G/A · Jan 9, 2023
6.2%
1.9M shares
SC 13G/A · Jul 19, 2022
3.0%
0 shares
Blue Ox Healthcare Partners, LLC (1)
SC 13G · Jun 2, 2022
15.4%
0 shares
SC 13G · Feb 22, 2022
10.1%
3.2M shares
InterWest Partners X, LP (“IWP X”)
SC 13G · Feb 14, 2022
8.6%
2.5M shares
aMoon Growth Fund Limited Partnership
SC 13G · Jan 24, 2022
6.2%
1.9M shares
SC 13G · Jan 4, 2022
8.6%
2.5M shares