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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES | 3 Months Ended
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Mar. 31, 2026
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES |
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES | (10) DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES The Company is exposed to financial market risk, primarily arising from fluctuations in foreign currency exchange rates, and management actively monitors these exposures. As part of its overall risk management strategy, the Company may use derivative financial instruments to reduce volatility in earnings and cash flows resulting from changes in foreign exchange rates. Ribbon’s policies and practices limit the use of derivative instruments to risk management activities only, and the Company does not use derivatives for trading or speculative purposes. The Company records derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a specific risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Derivatives may also be designated as hedges of the foreign currency exposure of a net investment in a foreign operation. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge, or the earnings effect of the hedged forecasted transactions in a cash flow hedge. The Company may enter into derivative contracts that are intended to economically hedge certain of its risk even though hedge accounting does not apply or the Company elects not to apply hedge accounting. Cash Flow Hedge of Foreign Exchange Rate Risk The Company is exposed to foreign currency exchange rate risk related to forecasted operating expenses denominated in a foreign currency. To manage this exposure, the Company entered into foreign exchange forward arrangements, which were designated as hedging instruments beginning in January 2026. These derivatives are intended to reduce the variability in cash flows associated with changes in foreign currency exchange rates. The Company’s objectives in using foreign exchange rate derivatives are to mitigate risk, add stability to cash flows, and manage its exposure to foreign exchange rate movements. To accomplish these objectives, the Company uses foreign exchange rate forward contracts as part of its foreign currency risk management strategy. Foreign exchange rate forward contracts designated as cash flow hedges involve the exchange of fixed USD payments for fixed ILS receipts at predetermined exchange rates, thereby reducing the variability of forecasted ILS‑denominated expenditures. The effective portion of changes in the fair value of designated derivatives that qualify as cash flow hedges is recorded in Accumulated other comprehensive income in the condensed consolidated balance sheet and is subsequently reclassified into earnings in the period that the hedged forecasted transactions affect earnings. Amounts reported in Accumulated other comprehensive income related to the Company’s derivative are reclassified to Research and development in the condensed consolidated statement of operations. The impact of the Company’s derivative financial instruments designated as cash flow hedges on the Company’s condensed consolidated statements of operations and condensed consolidated statements of comprehensive loss for the three months ended March 31, 2026 was as follows (in thousands):
​ | ​ | ​ | ​
​ | ​ ​ ​ | Three months ended
​ | ​ | ​ | March 31,
​ | ​ ​ ​ | 2026
Amount recognized in other comprehensive income (loss) on the derivative (effective portion) | ​ | $ | (304)
Amount reclassified from accumulated other comprehensive income to Research and development | ​ |  | 7
Unrealized loss on cash flow hedges, net of reclassifications into earnings | ​ | $ | (297)
​ The Company expects that all amounts recorded in Accumulated other comprehensive income related to outstanding foreign exchange forward contracts will be reclassified into earnings within the next twelve months, as all contracts outstanding at March 31, 2026 mature no later than September 2026. The Company's derivative liability designated as a hedging instrument and the related fair values and locations in the condensed consolidated balance sheet at March 31, 2026 are as follows (in thousands):
​ | ​ | ​ | ​
​ | ​ | ​ | March 31,
Balance sheet location | ​ ​ ​ | 2026
Accrued expenses and other | ​ | $ | 297
​ The aggregate notional amounts and maturities of the Company’s outstanding foreign exchange rate forward contracts at March 31, 2026 were as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Notional | ​ | ​ | Notional | ​ | ​
Derivative Instrument | ​ ​ ​ | ​ ​ ​ | Amount | ​ ​ ​ | ​ ​ ​ | Amount | ​ | Maturity
Foreign exchange rate forward contracts (cash flow hedges) | ​ | USD | 24,554 | ​ | ILS | 76,179 | ​ | April 2026 - September 2026
​ The Company has classified the foreign exchange derivative aggregating $0.3 million at March 31, 2026 as Level 2 within the fair value hierarchy (see Note 5).

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