Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 13 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
May 14, 2025 OSUR A 71,017 · · 126,335 Direct +128.38% Acquired (price as of 2026-10-05)
May 13, 2025 OSUR F 4,999 $2.65 $13,247 55,318 Direct -8.29% Disposed 50.4% (price as of 2026-10-05)
May 14, 2024 OSUR A 19,943 · · 60,317 Direct +49.40% Acquired (price as of 2026-10-05)
May 14, 2024 OSUR F 4,964 $5.26 $26,111 40,374 Direct -10.95% Disposed -24.2% (price as of 2026-10-05)
May 16, 2023 OSUR A 19,802 · · 45,338 Direct +77.55% Acquired (price as of 2026-10-05)
May 15, 2023 OSUR F 5,014 $5.62 $28,179 25,536 Direct -16.41% Disposed -29.1% (price as of 2026-10-05)
May 16, 2022 OSUR A 20,000 $5.25 $105,000 30,550 Direct +189.57% Acquired -24.1% (price as of 2026-10-05)
May 16, 2022 OSUR F 2,745 $5.25 $14,411 10,550 Direct -20.65% Disposed -24.1% (price as of 2026-10-05)
April 6, 2022 OSUR F 2,247 $6.71 $15,077 13,295 Direct -14.46% Disposed -40.6% (price as of 2026-10-05)
May 18, 2021 OSUR A 10,952 $9.59 $105,030 24,846 Direct +78.83% Acquired -58.4% (price as of 2026-10-05)
May 17, 2021 OSUR F 1,648 $9.50 $15,656 13,894 Direct -10.60% Disposed -58.1% (price as of 2026-10-05)
May 18, 2020 OSUR A 6,577 $15.96 $104,969 15,542 Direct +73.36% Acquired -75.0% (price as of 2026-10-05)
April 6, 2020 OSUR A 8,965 $11.16 $100,049 8,965 Direct · Acquired -64.3% (price as of 2026-10-05)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.