Corning Agreed to Narrow Currency Adjustments After SEC Push

The Tip Desk · October 21, 2026 · 3 min read

Corning proposed limiting its core-results currency adjustment to hedged exposures after SEC staff challenged a method that also adjusted unhedged amounts.

Corning (GLW) agreed to stop applying hedge-derived exchange rates to unhedged currency exposure in its adjusted “core” results after SEC staff pressed it to remove its longstanding constant-currency adjustment. The replacement it proposed would limit that adjustment to exposures covered by hedges, leaving unhedged amounts at the exchange rates used in its generally accepted accounting principles results.

The staff’s central concern was the reach of the calculation. Corning used long-term, management-determined exchange rates closely aligned with its hedging instruments across currency exposures that could be less than fully hedged. In its February 2026 demand, reproduced in Corning’s April response, the staff said the adjustment appeared inconsistent with restrictions on misleading non-GAAP measures and asked the company to remove it.

The amounts involved made the methodology consequential. Corning’s September explanation put the constant-currency addition to 2024 core net sales at $1.309 billion and the addition to core pretax income at $989 million. The company calculated those adjustments by translating underlying foreign-currency sales and expenses at both actual exchange rates and its selected core rates, then taking the difference.

Corning defended the approach as a way to show operating performance within the stable currency environment created by its multiyear hedging program. It said management used the same measures to evaluate segments, allocate resources and determine incentive compensation. Applying hedge-derived rates across significant exposures supported comparisons over extended periods, the company argued, and was never intended to suggest complete hedge coverage.

The staff had progressively asked for more detail before seeking the methodological change. Its initial questions challenged the use of internal exchange rates and asked how Corning determined their reasonableness. Corning first promised clearer disclosure about their derivation. It subsequently explained that its hedge rates were weighted averages of contractual rates, with no estimated factors in that calculation, and that senior managers reviewed their alignment with selected core rates at least quarterly.

By September, the staff was asking for the calculations behind individual core measures and an explanation of why the rates covered exposures beyond the hedged amounts. Corning acknowledged that fully hedging its changing currency exposures was impracticable and initially offered to clarify that its methodology did not imply complete coverage. In April, it committed to discontinuing that adjustment and proposed a narrower calculation.

Under the replacement, Corning would apply hedge rates only to the hedged share of each relevant currency exposure. It also promised to disclose the percentage hedged for each relevant currency in each period presented. Gains and losses on related hedging instruments would continue to be excluded separately from core results because, Corning explained, the new adjustment already incorporated their underlying exchange rates and counting both would duplicate their effects.

Corning planned prospective implementation and said it would wait for staff evaluation before publishing the revised presentation. The public version redacted the estimated financial impact, and the supplied exchange established neither staff acceptance nor completed implementation. The proposed change nevertheless set a concrete boundary for future core results: unhedged currency movements would remain reflected at the same exchange rates as in GAAP results.

Source: SEC correspondence.