Company · CIK 0001726445 · SIC 3826 — Laboratory Analytical Instruments · Nasdaq

Seer, Inc. · SEER

Insider activity reported against this company. All insider holders · On EDGAR ↗

Period1M 3M 6M 1Y 2Y All datashares as filed — not split-adjusted

Open-market buys & salesbuys $0 · 0sales $38k · 2net −$38k

Reported at this company — common stock

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake	Flags
Aug 18, 2026 SForm 4 →	Aug 19, 6:59 pm EDT	David R. HornPRESIDENT & CFO	7,309	$2.03	$14,809	486,650	−1.48%
Jul 28, 2026 AForm 4 →	Jul 30, 4:30 pm EDT	Nicolas H Roelofs Ph.D.Director	16,500	—	—	91,496	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:27 pm EDT	Isaac RoDirector	12,375	—	—	53,375	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:19 pm EDT	Dipchand NisharDirector	16,500	—	—	75,544	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:13 pm EDT	Terrance McGuireDirector	16,500	—	—	128,566	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:07 pm EDT	Robert LangerDirector	16,500	—	—	821,025	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:05 pm EDT	Meeta GulyaniDirector	16,500	—	—	124,043	—
Jul 8, 2026 SForm 4 →	Jul 10, 6:23 pm EDT	Dipchand NisharDirector	10,660	$2.18	$23,265	59,044	−15.3%	10b5-1

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake
Jul 28, 2026 AForm 4 →	Jul 30, 4:30 pm EDT	Nicolas H Roelofs Ph.D.Director	25,000	—	—	25,000	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:27 pm EDT	Isaac RoDirector	18,750	—	—	18,750	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:19 pm EDT	Dipchand NisharDirector	25,000	—	—	25,000	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:13 pm EDT	Terrance McGuireDirector	25,000	—	—	25,000	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:07 pm EDT	Robert LangerDirector	25,000	—	—	25,000	—
Jul 28, 2026 AForm 4 →	Jul 30, 4:05 pm EDT	Meeta GulyaniDirector	25,000	—	—	25,000	—