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ZL

Zhenya Lindgardt

Insider · Chief Executive Officer · SERA

Zhenya Lindgardt files insider transactions with the SEC as a chief executive officer of Sera Prognostics. We hold 5 disclosed purchases and sales filed since 9 November 2021, 2 of them in the last 90 days.

  • Files forSERA
  • Disclosed buys and sells5 in all, 2 in the last 90 days
  • Last disclosure9 September 2026

Positions held

1 post we hold — a term names its own dates; a run of filings only says when they filed
  • Filed 8 November 2021 — 8 September 2026Chief Executive Officer · Sera Prognostics 36 Form 4 lines · source: SEC Form 4

Every transaction

36 transactions from SEC Form 4 — one row each, sort any column, open a row for the filing
36 of 36 shown
8 Sep 20269 Sep 2026SEC Form 41 dsold on the open marketSera Prognostics20,139 sharesdown −0.5%up +0.0%
11 Jun 202615 Jun 2026SEC Form 44 dsold on the open marketSera Prognostics6,990 sharesup +3.6%up +8.7%
9 Jun 202610 Jun 2026SEC Form 41 dsold on the open marketSera Prognostics20,755 sharesdown −6.1%up +0.0%
12 Mar 202613 Mar 2026SEC Form 41 dwas grantednot a tradeSera Prognostics154,440 sharesup +0.5%down −6.1%
12 Mar 202613 Mar 2026SEC Form 41 dwas grantednot a tradeSera Prognosticsderivative239,442 sharesup +0.5%down −6.1%
12 Mar 202613 Mar 2026SEC Form 41 dwas grantednot a tradeSera Prognosticsderivative239,442 sharesup +0.5%down −6.1%
12 Mar 202613 Mar 2026SEC Form 41 dwas grantednot a tradeSera Prognostics154,440 sharesup +0.5%down −6.1%
11 Mar 202612 Mar 2026SEC Form 41 dsold on the open marketSera Prognostics2,973 sharesup +3.6%up +0.5%
11 Mar 202612 Mar 2026SEC Form 41 dsold on the open marketSera Prognostics2,973 sharesup +3.6%up +0.5%
10 Mar 202612 Mar 2026SEC Form 42 dsold on the open marketSera Prognostics22,639 sharesup +9.3%up +0.5%
10 Mar 202612 Mar 2026SEC Form 42 dsold on the open marketSera Prognostics22,639 sharesup +9.3%up +0.5%
10 Dec 202511 Dec 2025SEC Form 41 dsold on the open marketSera Prognostics4,155 sharesdown −41.2%down −41.2%
9 Dec 202510 Dec 2025SEC Form 41 dsold on the open marketSera Prognostics28,215 sharesdown −34.9%down −41.2%
10 Nov 202512 Nov 2025SEC Form 42 dsold on the open marketSera Prognostics11,594 sharesdown −21.6%down −35.9%
11 Sep 202512 Sep 2025SEC Form 41 dsold on the open marketSera Prognostics3,246 sharesdown −34.9%down −35.5%
9 Sep 20259 Sep 2025SEC Form 40 dsold on the open marketSera Prognostics21,158 sharesdown −35.5%down −35.5%
8 Aug 202511 Aug 2025SEC Form 43 dsold on the open marketSera Prognostics8,571 sharesdown −19.4%down −14.5%
10 Jun 202511 Jun 2025SEC Form 41 dsold on the open marketSera Prognostics3,344 sharesup +34.2%up +33.3%
9 Jun 202511 Jun 2025SEC Form 42 dsold on the open marketSera Prognostics23,042 sharesup +33.3%up +33.3%
8 May 20259 May 2025SEC Form 41 dsold on the open marketSera Prognostics9,406 sharesdown −5.7%down −9.9%
7 Mar 202510 Mar 2025SEC Form 43 dsold on the open marketSera Prognostics29,722 sharesdown −53.7%down −51.7%
6 Mar 202510 Mar 2025SEC Form 44 dwas grantednot a tradeSera Prognosticsderivative181,380 sharesdown −51.8%down −51.7%
6 Mar 202510 Mar 2025SEC Form 44 dwas grantednot a tradeSera Prognostics126,920 sharesdown −51.8%down −51.7%
12 Feb 202514 Feb 2025SEC Form 42 dsold on the open marketSera Prognostics14,075 sharesdown −53.4%down −50.4%
10 Dec 202412 Dec 2024SEC Form 42 dsold on the open marketSera Prognostics26,224 sharesdown −75.7%down −76.6%
11 Nov 202412 Nov 2024SEC Form 41 dsold on the open marketSera Prognostics12,075 sharesdown −73.1%down −72.4%
10 Sep 202410 Sep 2024SEC Form 40 dsold on the open marketSera Prognostics25,085 sharesdown −73.0%down −73.0%
7 Aug 20248 Aug 2024SEC Form 41 dsold on the open marketSera Prognostics12,327 sharesdown −73.0%down −73.0%
10 Jun 202411 Jun 2024SEC Form 41 dsold on the open marketSera Prognostics26,867 sharesdown −75.2%down −76.0%
8 May 202410 May 2024SEC Form 42 dsold on the open marketSera Prognostics11,992 sharesdown −78.5%down −78.4%
26 Mar 202426 Mar 2024SEC Form 40 dsold on the open marketSera Prognostics38,899 sharesdown −78.9%down −78.9%
6 Feb 20247 Feb 2024SEC Form 41 dsold on the open marketSera Prognostics27,997 sharesdown −75.9%down −74.7%
6 Nov 20238 Nov 2023SEC Form 42 dwas grantednot a tradeSera Prognostics800,000 sharesup +7.5%up +1.5%
6 Nov 20238 Nov 2023SEC Form 42 dwas grantednot a tradeSera Prognostics175,000 sharesup +7.5%up +1.5%
3 Jun 20226 Jun 2022SEC Form 43 dwas grantednot a tradeSera Prognosticsderivative149,675 sharesup +48.1%up +53.8%
8 Nov 20219 Nov 2021SEC Form 41 dwas grantednot a tradeSera Prognosticsderivative38,325 sharesdown −81.7%down −81.9%

Both percentages are the stock’s move, not Zhenya Lindgardt’s return: a disclosure gives a band, never an amount, so nobody can say how much was bought or what it made. They run to the last close we hold — 9 Sep 2026, except where a name has since delisted, when the row names its own last session. We publish no close, no volume and no dollar figure behind them. 36 of the 36 rows shown carry a percentage; the rest are dashes with the reason on the row.

Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.

Some filings reach us as photographs of paper rather than as a form we can read as text. Those are shown here only once they have been read and checked, so this page can hold fewer lines than the filings behind it contain. The link on every row opens the original document, which is always the full record.