Sera Prognostics Inc. (SERA) Insider Trading

Last 12 months

Insiders sold $659k and bought nothing on the open market.

7% of the selling was scheduled in advance under 10b5-1 plans. Chief Data Officer Paul Kearney sold $95k on Dec 2, 2025, 16% of their stake, outside a plan. The last open-market buy by an executive or director was in Jun 2022.

Net open-market

−$659k

0 buys · 50 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 10

executives and directors

Last open-market buy

Jun 2022

Jun 14, 2022

Get an email when SERA's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 12	Tiffany Eul Davis Inglis Chief Medical Officer	SoldNo plan	8,024	$2.03	$16k	8.8%	Form 4
Sep 10	Tiffany Eul Davis Inglis Chief Medical Officer	SoldNo plan	486	$2.00	$972	0.5%	Form 4
Sep 10	Dyaarl Lee Anderson Jr. Chief Commercial Officer	SoldNo plan	1,800	$2.00	$4k	2.3%	Form 4
Sep 10	Zhenya Lindgardt Chief Executive Officer	SoldNo plan	7,022	$2.00	$14k	0.8%	Form 4
Sep 10	Benjamin Jackson General Counsel	SoldNo plan	2,190	$2.00	$4k	1.4%	Form 4
Sep 8	Zhenya Lindgardt Chief Executive Officer	SoldNo plan	20,139	$2.00	$40k	2.3%	Form 4
Jun 11	Tiffany Eul Davis Inglis Chief Medical Officer	SoldNo plan	362	$2.01	$728	0.4%	Form 4
Jun 11	Dyaarl Lee Anderson Jr. Chief Commercial Officer	SoldNo plan	4,739	$2.01	$10k	5.7%	Form 4
Jun 11	Austin Aerts Chief Financial Officer	SoldNo plan	2,037	$2.01	$4k	0.7%	Form 4
Jun 11	Zhenya Lindgardt Chief Executive Officer	SoldNo plan	6,990	$2.01	$14k	0.8%	Form 4
Jun 11	Benjamin Jackson General Counsel	SoldNo plan	2,179	$2.01	$4k	1.3%	Form 4
Jun 9	Austin Aerts Chief Financial Officer	SoldNo plan	5,440	$2.08	$11k	1.8%	Form 4
Jun 9	Zhenya Lindgardt Chief Executive Officer	SoldNo plan	20,755	$2.08	$43k	2.3%	Form 4
Jun 8	Sandra Aj Lawrence Director	Sold10b5-1 plan	1,560	$2.15	$3k	8.7%	Form 4
Mar 10 – 11	Zhenya Lindgardt Chief Executive Officer	SoldNo plan 2 parts	25,612	$1.92 average	$49k	3.4%	Form 4
Mar 11	Paul Kearney Chief Data Officer	SoldNo plan	1,396	$2.04	$3k	0.8%	Form 4
Mar 11	Benjamin Jackson General Counsel	SoldNo plan	1,027	$2.04	$2k	0.9%	Form 4
Mar 11	Robert Gardner Harrison Chief Information Officer	SoldNo plan	716	$2.04	$1k	0.9%	Form 4
Mar 11	John J. Boniface Chief Scientific Officer	SoldNo plan	1,517	$2.04	$3k	1.0%	Form 4
Mar 10 – 11	Austin Aerts Chief Financial Officer	SoldNo plan 2 parts	7,088	$1.92 average	$14k	2.6%	Form 4
Mar 9	Paul Kearney Chief Data Officer	SoldNo plan	2,026	$1.96	$4k	1.2%	Form 4
Mar 9	Benjamin Jackson General Counsel	SoldNo plan	3,119	$1.96	$6k	2.6%	Form 4
Mar 9	Robert Gardner Harrison Chief Information Officer	SoldNo plan	3,360	$1.96	$7k	4.2%	Form 4
Mar 9	John J. Boniface Chief Scientific Officer	SoldNo plan	3,038	$1.96	$6k	2.0%	Form 4
Mar 9	Austin Aerts Chief Financial Officer	SoldNo plan	674	$1.96	$1k	0.2%	Form 4
Mar 6	Sandra Aj Lawrence Director	Sold10b5-1 plan	1,560	$1.95	$3k	8.0%	Form 4
Feb 24	Robert Gardner Harrison Chief Information Officer	Sold10b5-1 plan	2,000	$2.34	$5k	2.4%	Form 4
Jan 27	Robert Gardner Harrison Chief Information Officer	Sold10b5-1 plan	2,000	$2.97	$6k	2.4%	Form 4
Dec 30, 2025	Robert Gardner Harrison Chief Information Officer	Sold10b5-1 plan	2,000	$3.00	$6k	2.3%	Form 4
Dec 10, 2025	Zhenya Lindgardt Chief Executive Officer	SoldNo plan	4,155	$3.31	$14k	0.5%	Form 4
Dec 10, 2025	Paul Kearney Chief Data Officer	SoldNo plan	1,213	$3.31	$4k	0.7%	Form 4
Dec 10, 2025	Benjamin Jackson General Counsel	SoldNo plan	892	$3.31	$3k	0.7%	Form 4
Dec 10, 2025	Robert Gardner Harrison Chief Information Officer	SoldNo plan	616	$3.31	$2k	0.7%	Form 4
Dec 10, 2025	John J. Boniface Chief Scientific Officer	SoldNo plan	1,332	$3.31	$4k	0.9%	Form 4
Dec 10, 2025	Austin Aerts Chief Financial Officer	SoldNo plan	873	$3.31	$3k	0.3%	Form 4
Dec 9, 2025	Zhenya Lindgardt Chief Executive Officer	SoldNo plan	28,215	$3.04	$86k	3.5%	Form 4
Dec 9, 2025	Austin Aerts Chief Financial Officer	SoldNo plan	5,232	$3.04	$16k	1.9%	Form 4
Dec 8, 2025	Sandra Aj Lawrence Director	Sold10b5-1 plan	1,560	$3.05	$5k	7.4%	Form 4
Dec 5, 2025	Mansoor Raza Mirza Director	SoldNo plan	292	$3.05	$891	0.5%	Form 4
Dec 2, 2025	Robert Gardner Harrison Chief Information Officer	Sold10b5-1 plan	2,000	$2.93	$6k	2.2%	Form 4

Oct 12No plan
Tiffany Eul Davis Inglis
Chief Medical Officer · sold 8,024 at $2.03
$16k
8.8% of stake
Sep 10No plan
Tiffany Eul Davis Inglis
Chief Medical Officer · sold 486 at $2.00
$972
0.5% of stake
Sep 10No plan
Dyaarl Lee Anderson Jr.
Chief Commercial Officer · sold 1,800 at $2.00
$4k
2.3% of stake
Sep 10No plan
Zhenya Lindgardt
Chief Executive Officer · sold 7,022 at $2.00
$14k
0.8% of stake
Sep 10No plan
Benjamin Jackson
General Counsel · sold 2,190 at $2.00
$4k
1.4% of stake
Sep 8No plan
Zhenya Lindgardt
Chief Executive Officer · sold 20,139 at $2.00
$40k
2.3% of stake
Jun 11No plan
Tiffany Eul Davis Inglis
Chief Medical Officer · sold 362 at $2.01
$728
0.4% of stake
Jun 11No plan
Dyaarl Lee Anderson Jr.
Chief Commercial Officer · sold 4,739 at $2.01
$10k
5.7% of stake
Jun 11No plan
Austin Aerts
Chief Financial Officer · sold 2,037 at $2.01
$4k
0.7% of stake
Jun 11No plan
Zhenya Lindgardt
Chief Executive Officer · sold 6,990 at $2.01
$14k
0.8% of stake
Jun 11No plan
Benjamin Jackson
General Counsel · sold 2,179 at $2.01
$4k
1.3% of stake
Jun 9No plan
Austin Aerts
Chief Financial Officer · sold 5,440 at $2.08
$11k
1.8% of stake
Jun 9No plan
Zhenya Lindgardt
Chief Executive Officer · sold 20,755 at $2.08
$43k
2.3% of stake
Jun 810b5-1 plan
Sandra Aj Lawrence
Director · sold 1,560 at $2.15
$3k
8.7% of stake
Mar 10 – 11No plan
Zhenya Lindgardt
Chief Executive Officer · sold 25,612 at avg $1.92
$49k
3.4% of stake
Mar 11No plan
Paul Kearney
Chief Data Officer · sold 1,396 at $2.04
$3k
0.8% of stake
Mar 11No plan
Benjamin Jackson
General Counsel · sold 1,027 at $2.04
$2k
0.9% of stake
Mar 11No plan
Robert Gardner Harrison
Chief Information Officer · sold 716 at $2.04
$1k
0.9% of stake
Mar 11No plan
John J. Boniface
Chief Scientific Officer · sold 1,517 at $2.04
$3k
1.0% of stake
Mar 10 – 11No plan
Austin Aerts
Chief Financial Officer · sold 7,088 at avg $1.92
$14k
2.6% of stake
Mar 9No plan
Paul Kearney
Chief Data Officer · sold 2,026 at $1.96
$4k
1.2% of stake
Mar 9No plan
Benjamin Jackson
General Counsel · sold 3,119 at $1.96
$6k
2.6% of stake
Mar 9No plan
Robert Gardner Harrison
Chief Information Officer · sold 3,360 at $1.96
$7k
4.2% of stake
Mar 9No plan
John J. Boniface
Chief Scientific Officer · sold 3,038 at $1.96
$6k
2.0% of stake
Mar 9No plan
Austin Aerts
Chief Financial Officer · sold 674 at $1.96
$1k
0.2% of stake
Mar 610b5-1 plan
Sandra Aj Lawrence
Director · sold 1,560 at $1.95
$3k
8.0% of stake
Feb 2410b5-1 plan
Robert Gardner Harrison
Chief Information Officer · sold 2,000 at $2.34
$5k
2.4% of stake
Jan 2710b5-1 plan
Robert Gardner Harrison
Chief Information Officer · sold 2,000 at $2.97
$6k
2.4% of stake
Dec 30, 202510b5-1 plan
Robert Gardner Harrison
Chief Information Officer · sold 2,000 at $3.00
$6k
2.3% of stake
Dec 10, 2025No plan
Zhenya Lindgardt
Chief Executive Officer · sold 4,155 at $3.31
$14k
0.5% of stake
Dec 10, 2025No plan
Paul Kearney
Chief Data Officer · sold 1,213 at $3.31
$4k
0.7% of stake
Dec 10, 2025No plan
Benjamin Jackson
General Counsel · sold 892 at $3.31
$3k
0.7% of stake
Dec 10, 2025No plan
Robert Gardner Harrison
Chief Information Officer · sold 616 at $3.31
$2k
0.7% of stake
Dec 10, 2025No plan
John J. Boniface
Chief Scientific Officer · sold 1,332 at $3.31
$4k
0.9% of stake
Dec 10, 2025No plan
Austin Aerts
Chief Financial Officer · sold 873 at $3.31
$3k
0.3% of stake
Dec 9, 2025No plan
Zhenya Lindgardt
Chief Executive Officer · sold 28,215 at $3.04
$86k
3.5% of stake
Dec 9, 2025No plan
Austin Aerts
Chief Financial Officer · sold 5,232 at $3.04
$16k
1.9% of stake
Dec 8, 202510b5-1 plan
Sandra Aj Lawrence
Director · sold 1,560 at $3.05
$5k
7.4% of stake
Dec 5, 2025No plan
Mansoor Raza Mirza
Director · sold 292 at $3.05
$891
0.5% of stake
Dec 2, 202510b5-1 plan
Robert Gardner Harrison
Chief Information Officer · sold 2,000 at $2.93
$6k
2.2% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch SERA, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in SERA's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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