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SC 13D ·Filed Sep 17, 2026

OSUR

ORASURE TECHNOLOGIES INC
BULLISH
Impact 6/10
Horizonweeks Processed1mo ago SEC0000945621-26-001163
Activist investor acquires 5%+ stake
Actionable Insight ▲ Bullish

Watch for the group's next 13D amendment detailing specific director nominees or strategic proposals ahead of the 2027 annual meeting. The company's response (settlement, poison pill, or engagement) will determine near-term volatility. Monitor any additional share accumulation or swap conversions by either party.

DirectionBullish
Confidencehigh
Horizonweeks
Latest settled — T+20d
OSUR ▲ +1.40% at T+20d
LONG call ✓ call won +1.40% · α vs SPY +1.20% · entry $3.56 → $3.61
Next anchor: T+60d in 6w
Latest observation: T+25 +27.47% FF3 residual α
Entry = T+0 close
Sep 17, 2026
via day close
T+1d
+3.65%
call +3.65% · α +2.10%
$3.69
settled 6w ago
T+5d
+10.39%
call +10.39% · α +9.13%
$3.93
settled 5w ago
T+20d
+1.40%
call +1.40% · α +1.20%
$3.61
settled 12d ago
T+60d
Pending
in 6w

Price Chart

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Executive Summary

Yorkville Advisors and Islet Management have formed a group holding 6.4% of OraSure Technologies' common stock, disclosing their intent to engage with the board on enhancing shareholder value and potentially nominating directors at the 2027 annual meeting. The filing signals an activist campaign targeting board composition and strategic direction at a diagnostics company that has seen revenue decline and restructuring.

Key Financial Metrics

Stake
6.4%
Investor
Yorkville Advisors / Islet Management (group)

Key Facts

  • Yorkville (YA II PN, Ltd. and affiliates) holds 3,918,634 shares (5.7%) and Islet Management holds 490,000 shares (0.7%), for a combined 4,408,634 shares (6.4%)
  • The group formed on September 11, 2026, with the stated purpose of enhancing shareholder value, including potential board nominations at the 2027 annual meeting
  • Yorkville purchased shares between $3.25 and $4.02 from July to September 2026; Islet used cash-settled total return swaps for synthetic exposure before converting to common stock on September 15, 2026
  • The group has engaged counsel: Olshan Frome Wolosky for Yorkville and Dechert for Islet
  • OraSure's latest 10-K (filed March 2026) showed revenue decline and restructuring, providing context for activist pressure

Financial Impact

Combined stake valued at approximately $15.2 million based on recent purchase prices; Yorkville paid ~$15.3 million for its 3.9M shares, Islet paid ~$1.7 million for its 490,000 shares

board compositionshareholder valuestrategic direction

Risk Factors

  • The group's 6.4% stake is relatively small; a successful board challenge requires broader shareholder support
  • OraSure's declining revenue and restructuring may limit the activist's ability to unlock value quickly
  • Yorkville's history as a PIPE/financing provider could signal a different playbook than traditional operational activism

Investment Themes

Healthcare & Medical Devices

Documents Analyzed

This report is based on 6 SEC documents filed with EDGAR.

DocumentAccession Number
SC 13D Filing (Primary)0000945621-26-001163
Exhibit: exh_2.htm0000945621-26-001163
Exhibit: exh_1.htm0000945621-26-001163
Document: 0000945621-26-001163-index-headers.html0000945621-26-001163
Document: 0000945621-26-001163-index.html0000945621-26-001163
Document: 0000945621-26-001163.txt0000945621-26-001163
15 reports for OSUR
Performance horizon
100% Hit rate @ T+1 5 of 5 directional calls Went positive at some point 5 of 5 best @ T+60▲ +39.73%Mar 13, 2026
Filters
Rows
Reports for OSUR — sortable, filterable
TypeNow
Sep 17, 2026
5w ago
SC 13D
BULLISH ★ 6/10
$3.56 $3.69▲ +3.65%▲ +2.10%$4.13 (+15.87%)
Jul 23, 2026
13w ago
Court Ruling
NEUTRAL ★ 3/10
$3.97 $3.96▼ −0.25%▼ −0.27%$4.13 (+3.90%)
Jun 12, 2026
19w ago
Institutional Cluster
MIXED ★ 4/10
$4.18 $4.17▼ −0.24%▼ −2.00%$4.13 (−1.32%)
Jun 3, 2026
20w ago
8-K
NEUTRAL ★ 3/10
$4.17 $4.04▼ −3.12%▼ −0.52%$4.13 (−1.08%)
May 6, 2026
24w ago
8-K
BEARISH ★ 6/10
$3.13 $3.06▲ +2.24%▲ +3.07%$4.13 (−31.79%)
Apr 22, 2026
26w ago
Press Release
NEUTRAL ★ 1/10
$3.05awaiting T+1—$4.13 (+35.25%)
Apr 17, 2026
27w ago
DEFA14A
BULLISH ★ 7/10
$3.16 $3.19▲ +0.95%▲ +1.14%$4.13 (+30.54%)
Apr 17, 2026
27w ago
DEFA14A
BULLISH ★ 7/10
$3.16 $3.19▲ +0.95%▲ +1.14%$4.13 (+30.54%)
Apr 17, 2026
27w ago
8-K
NEUTRAL ★ 5/10
$3.16 $3.19▲ +0.95%▲ +1.14%$4.13 (+30.54%)
Mar 20, 2026
31w ago
Insider Cluster
NEUTRAL ★ 2/10
$2.95 $3.08▲ +4.41%▲ +3.30%$4.13 (+39.83%)
Showing 10 of 15

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Report published Sep 17, 2026