Octave Specialty Group Inc
OSG- Exchange
- NYSE
- Industry
- Surety Insurance
- SEC CIK
- 0000874501
No open-market purchases or sales by Octave Specialty Group Inc insiders were filed in the last 90 days; 147 institutions reported holding it in 13F filings for Q2 2026, worth $187.6M in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +1 vs. previous quarter
- 147
- 13F valueReported value at the end of Q2 2026
- $187.6M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding OSG, Q2 2026
No superinvestor reported holding OSG at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Octave Specialty Group Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 5, 2026 (view filing) | Jan 2 | 3 days | LeBlanc ClaudeChief Executive Officer | PPurchase | +12.0K | $7.59 | +$91.1K | +1.2%1.03M after | |
| Nov 14, 2025 (view filing) | Nov 12 | 2 days | Smith R SharonExec VP & Group COO | PPurchase | +20 | $10.25 | +$205 | 0.0%171.0K after | |
| Oct 1, 2025 (view filing) | Oct 1 | Same day | LeBlanc ClaudeChief Executive Officer | PPurchase | +25.0K | $8.54 | +$213.5K | +2.5%1.02M after | |
| Aug 11, 2025 (view filing) | Aug 11 | Same day | LeBlanc ClaudeChief Executive Officer | PPurchase | +25.0K | $7.03 | +$175.8K | +4.3%603.3K after | |
| May 15, 2025 (view filing) | May 14 | 1 day | Stein Jeffrey ScottDirector | PPurchaseCommon Stock, par value $0.01 per share | +15.0K | $6.46 | +$96.9K | +42.9%50.0K after | 2 lots |
| May 14, 2025 (view filing) | May 14 | Same day | Price Michael DDirector | PPurchaseCommon Stock, par value $0.01 per share | +77.0K | $6.49 | +$499.6K | +86.2%166.3K after | 2 lots |
| May 14, 2025 (view filing) | May 14 | Same day | LeBlanc ClaudeChief Executive Officer | PPurchase | +40.0K | $6.50 | +$260.0K | +7.4%578.3K after | |
| Sep 27, 2024 (view filing) | Sep 26-27 | 1 day | Matus Kristi AnnDirector | PPurchaseCommon Stock, par value $0.01 per share | +9.00K | $11.19 | +$100.7K | New position9.00K after | 2 lots |
| Aug 8, 2024 (view filing) | Aug 8 | Same day | Smith R SharonExec VP & Chief Strategy Offr | PPurchase | +1.10K | $10.64 | +$11.7K | +1.5%74.7K after | |
| Aug 8, 2024 (view filing) | Aug 7 | 1 day | Stein Jeffrey ScottDirector | PPurchaseCommon Stock, par value $0.01 per share | +25.0K | $10.82 | +$270.5K | +250.0%35.0K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Octave Specialty Group Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,572,516 | $28.5M | 0.00% | +654,718+16.7% | Added |
| Western Standard LLC | 2,247,591 | $14.0M | 4.75% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 1,972,619 | $12.3M | 0.00% | +27,543+1.4% | Added |
| Prescott Group Capital Management, L.L.C. | 1,647,793 | $10.3M | 0.89% | +55,206+3.5% | Added |
| Third Avenue Management LLC | 1,341,879 | $8.37M | 1.34% | +6680.0% | Added |
| Bain Capital Credit, LP | 1,108,012 | $6.91M | 1.88% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,106,335 | $6.91M | 0.00% | +83,897+8.2% | Added |
| State Street Corp | 898,673 | $5.61M | 0.00% | −42,731−4.5% | Reduced |
| Dimensional Fund Advisors LP | 716,947 | $4.47M | 0.00% | −593,185−45.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 649,530 | $4.05M | 0.01% | −234,742−26.5% | Reduced |