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Seer, Inc.

SEER
Exchange
Nasdaq
Industry
Laboratory Analytical Instruments
SEC CIK
0001726445

In the last 90 days, Seer, Inc. insiders filed 0 open-market purchases and 2 sales; 59 institutions reported holding it in 13F filings for Q2 2026, worth $34.0M in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Seer, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
2 filings
2 insiders, $38.1K in total
Insiders trading
2
Net value
−$38.1K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Seer, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Seer, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Horn David R.PRESIDENT & CFO486,650Aug 19, 20265
Roelofs Nicolas H PHDDirector91,496Jul 30, 20261
Ro IsaacDirector53,375Jul 30, 20261
Nishar DipchandDirector75,544Jul 30, 20262
McGuire TerranceDirector128,566Jul 30, 20262
Langer RobertDirector821,025Jul 30, 20261
Gulyani MeetaDirector124,043Jul 30, 20261
Bazarko Anthony R.Chief Commercial Officer75,000May 11, 20261
Farokhzad OmidCEO AND CHAIR3,349,064Feb 19, 20264
Hallal DavidDirector355,128Jun 14, 20240
Haurwitz Rachel E.Director87,615Jun 14, 20240
Kogan Elona Esq.CHIEF LEGAL OFFICER273,142Feb 23, 20240
Friedman CathyDirector173,574Jun 16, 20230
Ronaghi MostafaDirector224,903Jun 16, 20230
Thomas Scott DChief Commercial Officer95,532May 19, 20230
Ostadan OmeadPresident & COO378,238Jun 1, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 19, 2026 (view filing)6:59 PM ETAug 181 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−7.31K$2.03−$14.8K−1.5%486.6K after
Jul 10, 2026 (view filing)6:23 PM ETJul 82 daysNishar DipchandDirectorSSaleClass A Common Stock−10.7K$2.18−$23.3K−15.3%59.0K after10b5-1
May 21, 2026 (view filing)May 201 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−7.30K$1.69−$12.3K−1.5%494.0K after
Feb 19, 2026 (view filing)Feb 181 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−7.74K$1.99−$15.4K−1.5%501.3K after
Feb 19, 2026 (view filing)Feb 181 dayFarokhzad OmidCEO AND CHAIRSSaleClass A Common Stock−24.4K$1.99−$48.5K−0.7%3.35M after
Nov 21, 2025 (view filing)Nov 192 daysHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−6.80K$1.97−$13.4K−1.5%436.8K after
Nov 21, 2025 (view filing)Nov 192 daysFarokhzad OmidCEO AND CHAIRSSaleClass A Common Stock−33.8K$1.97−$66.7K−2.7%1.24M after
Aug 21, 2025 (view filing)Aug 201 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−6.83K$2.04−$13.9K−1.5%436.8K after
Aug 21, 2025 (view filing)Aug 201 dayFarokhzad OmidCEO AND CHAIRSSaleClass A Common Stock−34.0K$2.04−$69.3K−2.6%1.27M after
Jun 16, 2025 (view filing)Jun 133 daysNishar DipchandDirectorSSaleClass A Common Stock−30.3K$2.08−$62.9K−38.1%49.2K after10b5-1
May 22, 2025 (view filing)May 202 daysHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−6.76K$2.08−$14.1K−1.5%443.6K after
May 22, 2025 (view filing)May 202 daysFarokhzad OmidCEO AND CHAIRSSaleClass A Common Stock−33.7K$2.08−$70.0K−2.5%1.31M after
Feb 5, 2025 (view filing)Feb 41 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−3.55K$2.24−$7.95K−0.7%477.0K after
Feb 5, 2025 (view filing)Feb 41 dayFarokhzad OmidCEO AND CHAIRSSaleClass A Common Stock−8.07K$2.24−$18.1K−0.6%1.43M after
Jun 18, 2024 (view filing)Jun 144 daysNishar DipchandDirectorSSaleClass A Common Stock−12.1K$1.78−$21.6K−13.2%79.5K after10b5-1
Mar 12, 2024 (view filing)Mar 75 daysLateFarokhzad OmidCEO AND CHAIRSSaleClass A Common Stock−52.9K$2.03−$107.3K−3.5%1.44M after
Feb 23, 2024 (view filing)Feb 221 dayKogan Elona Esq.CHIEF LEGAL OFFICERSSaleClass A Common Stock−12.7K$1.58−$20.0K−4.4%273.1K after
Feb 23, 2024 (view filing)Feb 221 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−12.7K$1.58−$20.0K−2.6%480.5K after
Feb 7, 2024 (view filing)Feb 52 daysHorn David R.President and CFOSSaleClass A Common Stock−3.61K$1.67−$6.03K−1.1%328.2K after
Dec 6, 2023 (view filing)Dec 42 daysKogan Elona Esq.Chief Legal OfficerSSaleClass A Common Stock−8.18K$1.70−$13.9K−4.8%162.7K after
Aug 24, 2023 (view filing)Aug 231 dayFarokhzad OmidCEO, President and ChairPPurchaseClass A Common Stock+40.0K$2.45+$98.0K+5.2%807.7K after
May 19, 2023 (view filing)May 181 dayThomas Scott DChief Commercial OfficerSSaleClass A Common Stock−1.47K$3.56−$5.23K−1.5%95.5K after
Feb 22, 2023 (view filing)Feb 211 dayKogan Elona Esq.General Counsel and SecretarySSaleClass A Common Stock−5.95K$4.13−$24.6K−3.4%166.6K after
Feb 22, 2023 (view filing)Feb 211 dayHorn David R.Chief Financial OfficerSSaleClass A Common Stock−5.95K$4.13−$24.6K−1.8%331.8K after
Feb 22, 2023 (view filing)Feb 211 dayFarokhzad OmidCEO, President and ChairSSaleClass A Common Stock−13.8K$4.13−$57.2K−1.8%767.7K after
Feb 8, 2023 (view filing)Feb 71 dayHorn David R.Chief Financial OfficerSSaleClass A Common Stock−3.12K$5.40−$16.9K−1.2%267.7K after
Feb 8, 2023 (view filing)Feb 71 dayFarokhzad OmidCEO, President and ChairSSaleClass A Common Stock−8.38K$4.67−$39.1K−2.2%379.6K after
Feb 8, 2023 (view filing)Jan 1722 daysFarokhzad OmidCEO, President and ChairSSaleClass A Common Stock−4.80K$5.12−$24.6K−1.2%388.0K afterAmended
Jan 19, 2023 (view filing)Jan 172 daysHorn David R.Chief Financial OfficerSSaleClass A Common Stock−2.60K$5.12−$13.3K−1.0%270.8K after
Dec 8, 2022 (view filing)Dec 8Same dayHorn David R.Chief Financial OfficerSSaleClass A Common Stock−18.9K$6.57−$124.1K−6.5%273.4K after
Jun 10, 2022 (view filing)Jun 82 daysKogan Elona Esq.General Counsel and SecretarySSaleClass A Common Stock−8.19K$8.91−$72.9K−7.5%101.4K after
Jun 1, 2022 (view filing)May 275 daysOstadan OmeadPresident & COOSSaleClass A Common Stock−4.44K$8.06−$35.8K−1.2%378.2K after
Apr 22, 2022 (view filing)Apr 202 daysOstadan OmeadPresident & COOSSaleClass A Common Stock−52.0K$10.18−$529.8K−11.9%384.1K after
Feb 4, 2022 (view filing)Feb 22 daysHorn David R.Chief Financial OfficerSSaleClass A Common Stock−2.94K$17.40−$51.2K−1.3%229.2K after
Jan 4, 2022 (view filing)Jan 31 dayHorn David R.Chief Financial OfficerSSaleClass A Common Stock−2.31K$22.81−$52.6K−1.0%232.1K after
Dec 16, 2021 (view filing)9:28 PM ETDec 151 dayOstadan OmeadPresident & COOSSaleClass A Common Stock−20.0K$23.10−$461.9K−5.0%377.4K after3 lots
Dec 8, 2021 (view filing)Dec 62 daysHorn David R.Chief Financial OfficerSSaleClass A Common Stock−26.3K$20.26−$532.3K−11.3%205.6K after
Nov 17, 2021 (view filing)Nov 152 daysOstadan OmeadPresident & COOSSaleClass A Common Stock−20.0K$30.49−$609.9K−5.0%377.4K after2 lots
Nov 3, 2021 (view filing)Nov 12 daysHorn David R.Chief Financial OfficerSSaleClass A Common Stock−10.0K$37.78−$377.8K−4.1%231.0K after2 lots
Oct 19, 2021 (view filing)Oct 154 daysOstadan OmeadPresident & COOSSaleClass A Common Stock−20.0K$32.96−$659.2K−5.0%377.4K after2 lots
Oct 5, 2021 (view filing)Oct 14 daysHorn David R.Chief Financial OfficerSSaleClass A Common Stock−10.0K$33.85−$338.5K−4.1%231.0K after2 lots
Sep 17, 2021 (view filing)Sep 152 daysOstadan OmeadPresident & COOSSaleClass A Common Stock−20.0K$40.93−$818.6K−5.0%377.4K after3 lots
Sep 2, 2021 (view filing)Sep 11 dayHorn David R.Chief Financial OfficerSSaleClass A Common Stock−10.0K$39.57−$395.7K−4.1%231.0K after2 lots
Aug 4, 2021 (view filing)Aug 22 daysHorn David R.Chief Financial OfficerSSaleClass A Common Stock−10.0K$31.20−$312.0K−4.1%231.0K after2 lots
Jul 6, 2021 (view filing)Jul 15 daysHorn David R.Chief Financial OfficerSSaleClass A Common Stock−10.0K$31.32−$313.2K−4.1%231.0K after3 lots