RESEARCH FRONTIERS INC (REFR) › Operating Cash FlowRESEARCH FRONTIERS INC (REFR) — Operating Cash FlowAnnual figures by fiscal year, from SEC filings.2009: -$3.73M2010: -$3.20M2011: -$3.35M2012: -$2.68M2015: -$3.58M2016: -$4.01M2017: -$1.47M2018: -$2.07M2019: -$2.08M2020: -$2.25M2021: -$1.80M2022: -$2.18M2023: -$2.30M2024: -$788.8K2025: -$1.33M-$1.33M2009Operating Cash Flow (USD)2025Fiscal YearOperating Cash FlowChange YoY2025-$1.33M-68.5%2024-$788.8K+65.6%2023-$2.30M-5.1%2022-$2.18M-21.0%2021-$1.80M+19.9%2020-$2.25M-8.2%2019-$2.08M-0.6%2018-$2.07M-40.8%2017-$1.47M+63.3%2016-$4.01M-11.9%2015-$3.58M—2012-$2.68M+20.1%2011-$3.35M-4.7%2010-$3.20M+14.2%2009-$3.73M—Other metrics: RevenueCost of RevenueGross ProfitOperating IncomeNet IncomeEPS (Diluted)Total AssetsTotal LiabilitiesShareholders' EquityCash & EquivalentsCapital ExpendituresShares OutstandingDividends Per Share