InsiderTrades

Form 4 for OSG OCTAVE SPECIALTY GROUP INC

Accepted 2026-03-25 00:00:00 ET · period of report 2026-03-10 · accession 0001628280-26-021064 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
D 2026-03-25 2026-03-10 OSG Ahn Cristina E. CAO M - OptEx — +835 835 New —
D 2026-03-25 2026-03-10 OSG Ahn Cristina E. CAO F - Tax $4.90 -203 632 -24% -$994.70
D 2026-03-25 2026-03-23 OSG Ahn Cristina E. CAO A - Grant — +8,067 9,718 +489% —
D 2026-03-25 2026-03-10 OSG Ahn Cristina E. CAO M - OptEx — -835 1,651 -34% —

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock, par value $0.01 per share 2026-03-10 M A 835 — 835 D — — (F1) Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Octave Specialty Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2025 Long Term Incentive Plan award.
2 Common Common Stock, par value $0.01 per share 2026-03-10 F D 203 $4.90 632 D — — (F2) Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.
3 Derivative Restricted Stock Units 2026-03-23 A A 8,067 — 9,718 D — · — to — 8,067 Common Stock (F4) On March 23, 2026 the reporting person received a grant of 8,067 restricted stock units ("RSUs") as part of her 2026 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 23, 2027, March 23, 2028, and March 23, 2029. (F3) Each RSU represents a contingent right to receive one share of the Company's common stock.
4 Derivative Restricted Stock Units 2026-03-10 M D 835 — 1,651 D — · — to — 835 Common Stock (F1) Represents the aggregate amount of restricted stock units ("RSUs") that were converted into shares of common stock of Octave Specialty Group, Inc. (the "Company") upon settlement of a portion of the reporting person's 2025 Long Term Incentive Plan award. (F3) Each RSU represents a contingent right to receive one share of the Company's common stock.