MarketPeel
Insider Trading Intelligence
Pricing
…
ZL

Zhenya Lindgardt

SERA
CHIEF EXECUTIVE OFFICER · SERA PROGNOSTICS, INC. · CIK 0001891299
FILING MIX · LIFETIME26%/74%
BUYS
8
SELLS
23
TOTAL VALUE
$2.07M
COMPANIES
1
ACTIVE SINCE
Nov 2021
HOLDINGS NOW
865,009
AVG SELL PX
$5.29
TRADE KIND
SHOWING 31 / 31
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
21 backtested trades · 8 horizons · 27 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Zhenya Lindgardt, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d21+52.38%+2.74%+0.41%+2.33%+1.17%—
14d21+52.38%+3.19%+0.66%+2.52%-0.87%—
30d21+38.10%+8.93%+1.03%+7.89%+3.10%—
60d21+66.67%-1.77%+3.52%-5.29%-11.77%—
90d21+47.62%+0.19%+4.36%-4.17%-6.87%—
180d21(2 pending)+78.95%-13.18%+8.32%-21.50%-34.52%—
1y21(8 pending)+84.62%-39.43%+18.35%-57.78%-71.96%—
2y21(17 pending)+100.00%-76.14%+36.83%-112.97%-111.33%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
SERA · 865,009 shares · as of Jun 11, 2026
0243,750487,500731,250975,00020222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 8 buys / 23 sellsCOVERAGE · 19 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
6,990$2.01$14.0K865,009Jun 11, 2026Jun 15, 2026 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
20,755$2.08$43.2K871,999Jun 9, 2026Jun 10, 2026 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
239,442——239,442Mar 12, 2026Mar 13, 2026 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
154,440——892,754Mar 12, 2026Mar 13, 2026 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
2,973$2.04$6.1K738,314Mar 11, 2026Mar 12, 2026 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
22,639$1.90$43.0K741,287Mar 10, 2026Mar 12, 2026 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
4,155$3.31$13.8K763,926Dec 10, 2025Dec 11, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
28,215$3.04$85.8K768,081Dec 9, 2025Dec 10, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
11,594$2.62$30.4K796,296Nov 10, 2025Nov 12, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
3,246$3.13$10.2K807,890Sep 11, 2025Sep 12, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
21,158$3.15$66.6K811,136Sep 9, 2025Sep 9, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
8,571$2.54$21.8K832,294Aug 8, 2025Aug 11, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
3,344$1.48$4.9K840,865Jun 10, 2025Jun 11, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
23,042$1.43$33.0K844,209Jun 9, 2025Jun 11, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
9,406$2.44$23.0K867,251May 8, 2025May 9, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
29,722$4.12$122.5K876,657Mar 7, 2025Mar 10, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
181,380——181,380Mar 6, 2025Mar 10, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
126,920——906,379Mar 6, 2025Mar 10, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
14,075$4.58$64.5K779,459Feb 12, 2025Feb 14, 2025 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
26,224$7.41$194.3K793,534Dec 10, 2024Dec 12, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
12,075$7.32$88.4K819,758Nov 11, 2024Nov 12, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
25,085$7.57$189.9K831,833Sep 10, 2024Sep 10, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
12,327$7.42$91.5K856,918Aug 7, 2024Aug 8, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
26,867$8.11$217.9K869,245Jun 10, 2024Jun 11, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
11,992$9.59$115.0K896,112May 8, 2024May 10, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
38,899$9.37$364.5K908,104Mar 26, 2024Mar 26, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
SALE
Chief Executive Officer
27,997$8.03$224.8K947,003Feb 6, 2024Feb 7, 2024 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
175,000——975,000Nov 6, 2023Nov 8, 2023 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
800,000——800,000Nov 6, 2023Nov 8, 2023 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
149,675——149,675Jun 3, 2022Jun 6, 2022 ↗View →
SERA
SERA PROGNOSTICS, INC.
PURCHASEGRANT
Stock grant
38,325——38,325Nov 8, 2021Nov 9, 2021 ↗View →
Other insiders · SERA
Loading peer insiders…
About this filer
CIK 0001891299
ROLE
Chief Executive Officer
PRIMARY
SERA
COMPANIES
1
ACTIVE SINCE
Nov 2021
MARKETPEEL · /INSIDER/0001891299DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback