Non-GAAP earnings disclosures around regulation G – The case of “implicit non-GAAP reporting”

We identify a phenomenon related to non-GAAP earnings disclosure and examine its prevalence around Regulation G (RegG). Specifically, we analyze to what extent firms only disclose adjustments to GAAP earnings instead of entire adjusted earnings figures thereby not providing the ideal non-GAAP toGAAP reconciliation promoted by RegG. We refer to this reporting behavior as “implicit non-GAAP reporting” and ask three different questions: How is “implicit non-GAAP reporting” related with the adoption of RegG? What type of firm reports implicit non-GAAP measures? What are the motives for “implicit non-GAAP reporting” post-RegG? Our analyses yield three key findings. First, the frequency of “implicit non-GAAP reporting” spikes after the regulatory intervention but to a lesser degree also existed before. Second, during the post-RegG time period, the prevalence of “implicit non-GAAP reporting” is much higher among firmswho only started to report non-GAAP earnings after RegGwas enacted (starters) than among those, which continued to disclose non-GAAP earnings across the regulatory intervention (continuers). Third, we show that only for starters, “implicit non-GAAP reporting” is associated with motives of beating analyst earnings forecasts as well as experiencing GAAP losses. Our study provides important insights for regulators, firms and academics into "implicit non-GAAP reporting" by examining properties and determinants of implicit vs. explicit non-GAAP earnings for different types of firms around RegG