Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 39 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, 2024 OSUR F 5,364 $5.26 $28,215 82,146 Direct -6.13% Disposed -24.6% (price as of 2026-10-02)
March 26, 2024 OSUR F 871 $6.22 $5,418 87,510 Direct -0.99% Disposed -36.3% (price as of 2026-10-02)
March 26, 2024 OSUR A 3,217 $6.22 $20,010 88,381 Direct +3.78% Acquired -36.3% (price as of 2026-10-02)
Dec. 20, 2023 OSUR F 676 $8.01 $5,415 85,164 Direct -0.79% Disposed -50.5% (price as of 2026-10-02)
Dec. 20, 2023 OSUR A 2,498 $8.01 $20,009 85,840 Direct +3.00% Acquired -50.5% (price as of 2026-10-02)
Sept. 25, 2023 OSUR F 1,062 $5.71 $6,064 83,342 Direct -1.26% Disposed -30.6% (price as of 2026-10-02)
Sept. 25, 2023 OSUR A 3,922 $5.71 $22,395 84,404 Direct +4.87% Acquired -30.6% (price as of 2026-10-02)
June 28, 2023 OSUR F 1,084 $5.00 $5,420 80,482 Direct -1.33% Disposed -20.7% (price as of 2026-10-02)
June 28, 2023 OSUR A 4,004 $5.00 $20,020 81,566 Direct +5.16% Acquired -20.7% (price as of 2026-10-02)
May 16, 2023 OSUR A 19,802 · · 77,562 Direct +34.28% Acquired (price as of 2026-10-02)
May 15, 2023 OSUR F 5,418 $5.62 $30,449 57,760 Direct -8.58% Disposed -29.4% (price as of 2026-10-02)
April 4, 2023 OSUR F 837 $6.47 $5,415 63,178 Direct -1.31% Disposed -38.7% (price as of 2026-10-02)
April 4, 2023 OSUR A 3,090 $6.47 $19,992 64,015 Direct +5.07% Acquired -38.7% (price as of 2026-10-02)
Dec. 20, 2022 OSUR F 1,016 $4.92 $4,999 60,925 Direct -1.64% Disposed -19.4% (price as of 2026-10-02)
Dec. 20, 2022 OSUR A 3,752 $4.92 $18,460 61,941 Direct +6.45% Acquired -19.4% (price as of 2026-10-02)
Oct. 5, 2022 OSUR F 1,110 $3.96 $4,396 58,189 Direct -1.87% Disposed 0.1% (price as of 2026-10-02)
Oct. 5, 2022 OSUR A 4,098 $3.96 $16,228 59,299 Direct +7.42% Acquired 0.1% (price as of 2026-10-02)
June 27, 2022 OSUR F 1,523 $2.89 $4,401 55,201 Direct -2.68% Disposed 37.2% (price as of 2026-10-02)
June 27, 2022 OSUR A 5,623 $2.89 $16,250 56,724 Direct +11.00% Acquired 37.2% (price as of 2026-10-02)
May 16, 2022 OSUR A 20,000 $5.25 $105,000 51,101 Direct +64.31% Acquired -24.5% (price as of 2026-10-02)
March 25, 2022 OSUR A 2,349 $6.92 $16,255 31,737 Direct +7.99% Acquired -42.7% (price as of 2026-10-02)
March 25, 2022 OSUR F 636 $6.92 $4,401 31,101 Direct -2.00% Disposed -42.7% (price as of 2026-10-02)
Dec. 22, 2021 OSUR A 1,717 $9.46 $16,243 29,388 Direct +6.21% Acquired -58.1% (price as of 2026-10-02)
Sept. 30, 2021 OSUR A 1,404 $11.58 $16,258 27,671 Direct +5.35% Acquired -65.8% (price as of 2026-10-02)
Aug. 12, 2021 OSUR F 3,673 $11.15 $40,954 26,802 Direct -12.05% Disposed -64.4% (price as of 2026-10-02)
June 30, 2021 OSUR A 1,589 $10.23 $16,255 30,475 Direct +5.50% Acquired -61.2% (price as of 2026-10-02)
May 18, 2021 OSUR A 10,952 $9.59 $105,030 28,886 Direct +61.07% Acquired -58.7% (price as of 2026-10-02)
May 17, 2021 OSUR F 1,798 $9.50 $17,081 17,934 Direct -9.11% Disposed -58.3% (price as of 2026-10-02)
March 31, 2021 OSUR A 1,401 $11.60 $16,252 19,732 Direct +7.64% Acquired -65.8% (price as of 2026-10-02)
Dec. 18, 2020 OSUR A 1,436 $11.32 $16,256 18,723 Direct +8.31% Acquired -65.0% (price as of 2026-10-02)
Dec. 18, 2020 OSUR F 392 $11.32 $4,437 18,331 Direct -2.09% Disposed -65.0% (price as of 2026-10-02)
Sept. 25, 2020 OSUR A 1,492 $10.89 $16,248 17,695 Direct +9.21% Acquired -63.6% (price as of 2026-10-02)
Sept. 25, 2020 OSUR F 408 $10.89 $4,443 17,287 Direct -2.31% Disposed -63.6% (price as of 2026-10-02)
June 23, 2020 OSUR A 1,667 $9.74 $16,237 16,658 Direct +11.12% Acquired -59.3% (price as of 2026-10-02)
June 23, 2020 OSUR F 455 $9.74 $4,432 16,203 Direct -2.73% Disposed -59.3% (price as of 2026-10-02)
May 18, 2020 OSUR A 6,577 $15.96 $104,969 21,568 Direct +43.87% Acquired -75.2% (price as of 2026-10-02)
April 8, 2020 OSUR A 2,145 $10.60 $22,737 15,577 Direct +15.97% Acquired -62.6% (price as of 2026-10-02)
April 8, 2020 OSUR F 586 $10.60 $6,212 14,991 Direct -3.76% Disposed -62.6% (price as of 2026-10-02)
Aug. 12, 2019 OSUR A 13,432 $7.44 $99,934 13,432 Direct · Acquired -46.7% (price as of 2026-10-02)

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.