Sera Prognostics, Inc.

NasdaqGM:SERA Stock Report

Market Cap: US$72.4m

Sera Prognostics Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:SERA Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
11 Mar 26SellUS$13,610Austin AertsIndividual7,088US$2.04
11 Mar 26SellUS$3,095John BonifaceIndividual1,517US$2.04
11 Mar 26SellUS$1,461Robert HarrisonIndividual716US$2.04
11 Mar 26SellUS$2,095Benjamin JacksonIndividual1,027US$2.04
11 Mar 26SellUS$2,848Paul KearneyIndividual1,396US$2.04
11 Mar 26SellUS$49,079Zhenya LindgardtIndividual25,612US$2.04
09 Mar 26SellUS$6,113Benjamin JacksonIndividual3,119US$1.96
09 Mar 26SellUS$6,586Robert HarrisonIndividual3,360US$1.96
09 Mar 26SellUS$1,321Austin AertsIndividual674US$1.96
09 Mar 26SellUS$5,954John BonifaceIndividual3,038US$1.96
09 Mar 26SellUS$3,971Paul KearneyIndividual2,026US$1.96
10 Dec 25SellUS$2,953Benjamin JacksonIndividual892US$3.31
10 Dec 25SellUS$2,890Austin AertsIndividual873US$3.31
10 Dec 25SellUS$4,015Paul KearneyIndividual1,213US$3.31
10 Dec 25SellUS$4,409John BonifaceIndividual1,332US$3.31
10 Dec 25SellUS$13,753Zhenya LindgardtIndividual4,155US$3.31
10 Dec 25SellUS$2,039Robert HarrisonIndividual616US$3.31
09 Dec 25SellUS$85,774Zhenya LindgardtIndividual28,215US$3.04
09 Dec 25SellUS$15,905Austin AertsIndividual5,232US$3.04
05 Dec 25SellUS$891Mansoor MirzaIndividual292US$3.05
10 Nov 25SellUS$18,495Benjamin JacksonIndividual7,059US$2.62
10 Nov 25SellUS$16,640Austin AertsIndividual6,351US$2.62
10 Nov 25SellUS$20,350John BonifaceIndividual7,767US$2.62
10 Nov 25SellUS$17,103Robert HarrisonIndividual6,528US$2.62
10 Nov 25SellUS$18,531Paul KearneyIndividual7,073US$2.62
10 Nov 25SellUS$30,376Zhenya LindgardtIndividual11,594US$2.62
05 Nov 25SellUS$672Mansoor MirzaIndividual221US$3.04
06 Oct 25SellUS$717Mansoor MirzaIndividual227US$3.16
11 Sep 25SellUS$2,923Benjamin JacksonIndividual934US$3.13
11 Sep 25SellUS$4,366John BonifaceIndividual1,395US$3.13
11 Sep 25SellUS$10,160Zhenya LindgardtIndividual3,246US$3.13
11 Sep 25SellUS$3,978Paul KearneyIndividual1,271US$3.13
11 Sep 25SellUS$2,019Robert HarrisonIndividual645US$3.13
11 Sep 25SellUS$2,864Austin AertsIndividual915US$3.13
09 Sep 25SellUS$16,578Austin AertsIndividual5,263US$3.15
09 Sep 25SellUS$66,648Zhenya LindgardtIndividual21,158US$3.15
05 Sep 25SellUS$744Mansoor MirzaIndividual222US$3.35
08 Aug 25SellUS$16,375Benjamin JacksonIndividual6,447US$2.54
08 Aug 25SellUS$14,732Austin AertsIndividual5,800US$2.54
08 Aug 25SellUS$18,019John BonifaceIndividual7,094US$2.54
08 Aug 25SellUS$15,143Robert HarrisonIndividual5,962US$2.54
08 Aug 25SellUS$16,408Paul KearneyIndividual6,460US$2.54
08 Aug 25SellUS$21,770Zhenya LindgardtIndividual8,571US$2.54
05 Aug 25SellUS$563Mansoor MirzaIndividual225US$2.50
07 Jul 25SellUS$552Mansoor MirzaIndividual234US$2.36
10 Jun 25SellUS$37,899Zhenya LindgardtIndividual26,386US$1.48
10 Jun 25SellUS$987Robert HarrisonIndividual667US$1.48
10 Jun 25SellUS$1,940Paul KearneyIndividual1,311US$1.48
10 Jun 25SellUS$9,600Austin AertsIndividual6,680US$1.48
10 Jun 25SellUS$1,428Benjamin JacksonIndividual965US$1.48
10 Jun 25SellUS$2,130John BonifaceIndividual1,439US$1.48
06 Jun 25SellUS$169Mansoor MirzaIndividual107US$1.58
08 May 25SellUS$15,553Austin AertsIndividual6,374US$2.44
08 May 25SellUS$12,522John BonifaceIndividual5,132US$2.44
08 May 25SellUS$15,984Robert HarrisonIndividual6,551US$2.44
08 May 25SellUS$17,285Benjamin JacksonIndividual7,084US$2.44
08 May 25SellUS$17,297Paul KearneyIndividual7,089US$2.44
08 May 25SellUS$22,951Zhenya LindgardtIndividual9,406US$2.44
08 May 25SellUS$259Mansoor MirzaIndividual106US$2.44
07 Apr 25SellUS$358Mansoor MirzaIndividual107US$3.35

Insider Trading Volume

Insider Buying: SERA insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of SERA?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders1,807,5594.62%
Hedge Funds9,925,64225.4%
General Public12,205,29431.2%
Institutions15,205,35338.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 65.73% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
16.5%
Baker Bros. Advisors LP
6,465,929US$12.0m0%0.07%
8.84%
Whetstone Capital Advisors, LLC
3,459,713US$6.4m-4.75%2.46%
6.12%
Chione Ltd
2,396,685US$4.4m0%46.42%
5.82%
Aberdeen Group Plc
2,279,699US$4.2m0%no data
5.63%
Anthem Insurance Companies, Inc.
2,201,974US$4.1m0%100.0%
4.88%
aMoon Ventures Y.SH. Ltd
1,911,332US$3.5m0%5.08%
4.22%
Vivo Capital, LLC
1,650,440US$3.1m0%0.18%
3.17%
The Vanguard Group, Inc.
1,239,449US$2.3m1.83%no data
1.98%
Gregory Critchfield
775,577US$1.4m0%no data
1.81%
Citadel Advisors LLC
707,614US$1.3m8.24%no data
1.37%
CapFinancial Partners, LLC
536,766US$993.0k-10.9%no data
0.85%
Geode Capital Management, LLC
334,639US$619.1k1.06%no data
0.55%
Zhenya Lindgardt
216,562US$400.6k-17%no data
0.53%
AWM Investment Company Inc
207,382US$383.7k0%0.04%
0.48%
BlackRock, Inc.
186,751US$345.5k4.34%no data
0.42%
Paul Kearney
163,961US$303.3k35.3%no data
0.37%
John Boniface
145,842US$269.8k44.2%no data
0.37%
Austin Aerts
144,340US$267.0k6.08%no data
0.32%
State Street Global Advisors, Inc.
124,792US$230.9k0%no data
0.29%
Millennium Management LLC
113,178US$209.4k-11.1%no data
0.27%
GSA Capital Partners LLP
107,235US$198.4k64.5%0.02%
0.26%
Corient Private Wealth LLC
100,000US$185.0k0%no data
0.25%
Northern Trust Global Investments
96,535US$178.6k9.1%no data
0.21%
Benjamin Jackson
82,603US$152.8k-30.5%no data
0.21%
Morgan Stanley
80,440US$148.8k-0.32%no data

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/03/30 11:47
End of Day Share Price 2026/03/30 00:00
Earnings2025/12/31
Annual Earnings2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Sera Prognostics, Inc. is covered by 6 analysts. 3 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Anita DushyanthBerenberg
Patrick DonnellyCitigroup Inc
Tycho PetersonJefferies LLC