Listed

Research Frontiers Inc

REFRNasdaqCIK 793524FinancialsFiscal year ends Dec 31

Latest reported revenue, Q2 FY2026$86.3kRevenue, Q2 FY2026, three months to 2026-06-30$86.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figureThree months to Jun 30, 2026, from the 10-Q filed Aug 6, 2026.

Latest quarter: Q2 FY2026

Three months to Jun 30, 2026, against the same quarter a year earlier.

  • Revenue$86.3kRevenue, Q2 FY2026, three months to 2026-06-30$86.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure−33.5% on a year earlier
  • Gross marginnot reported (Gross profit not reported)No year-earlier figure to compare
  • Operating margin−775.7%Operating margin, Q2 FY2026, three months to 2026-06-30. operating income / revenueOperating income: −$669.8k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Revenue: $86.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure−148.2 pts on a year earlier
  • Net margin−764.6%Net margin, Q2 FY2026, three months to 2026-06-30. net income / revenueNet income: −$660.2k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Revenue: $86.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure−145.8 pts on a year earlier
  • Diluted EPS−$0.02Diluted EPS, Q2 FY2026, three months to 2026-06-30−$0.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure+0.0% on a year earlier
  • Free cash flow−$191.3kFree cash flow, Q2 FY2026, three months to 2026-06-30. operating cash flow − capital expenditureOperating cash flow: −$191.3k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001493152-26-036332. Derived: 6-month figure less the 3-month figure.Capital expenditure: $38. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-06, accession 0001493152-26-036332. Derived: 6-month figure less the 3-month figure.Report this figure−143.7% on a year earlier

Last eight quarters

Full statements
Revenue$86.3kOperating margin −775.7%
Diluted EPS−$0.02, Q2 FY2026
Free cash flow−$191.3k, Q2 FY2026
Research Frontiers Inc, key figures for the last eight quarters
Line itemUnitQ3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30Shape over the periods
Revenue$k354Revenue, Q3 FY2024, three months to 2024-09-30$354.4k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figure178Revenue, Q4 FY2024, three months to 2024-12-31$178.2k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure560Revenue, Q1 FY2025, three months to 2025-03-31$559.8k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure130Revenue, Q2 FY2025, three months to 2025-06-30$129.9k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure359Revenue, Q3 FY2025, three months to 2025-09-30$359.4k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figure72.1Revenue, Q4 FY2025, three months to 2025-12-31$72.1k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure136Revenue, Q1 FY2026, three months to 2026-03-31$136.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure86.3Revenue, Q2 FY2026, three months to 2026-06-30$86.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure
Gross margin%not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)
Operating margin%(65.4%)Operating margin, Q3 FY2024, three months to 2024-09-30. operating income / revenueOperating income: −$231.7k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Revenue: $354.4k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figure(350.4%)Operating margin, Q4 FY2024, three months to 2024-12-31. operating income / revenueOperating income: −$624.3k. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Revenue: $178.2k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure(42.8%)Operating margin, Q1 FY2025, three months to 2025-03-31. operating income / revenueOperating income: −$239.6k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Revenue: $559.8k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(627.5%)Operating margin, Q2 FY2025, three months to 2025-06-30. operating income / revenueOperating income: −$815.1k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Revenue: $129.9k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure(84.6%)Operating margin, Q3 FY2025, three months to 2025-09-30. operating income / revenueOperating income: −$303.9k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Revenue: $359.4k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figure(1072.5%)Operating margin, Q4 FY2025, three months to 2025-12-31. operating income / revenueOperating income: −$773.5k. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Revenue: $72.1k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure(389.1%)Operating margin, Q1 FY2026, three months to 2026-03-31. operating income / revenueOperating income: −$530.4k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Revenue: $136.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(775.7%)Operating margin, Q2 FY2026, three months to 2026-06-30. operating income / revenueOperating income: −$669.8k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Revenue: $86.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure
Net margin%(47.1%)Net margin, Q3 FY2024, three months to 2024-09-30. net income / revenueNet income: −$166.8k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Revenue: $354.4k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figure(341.2%)Net margin, Q4 FY2024, three months to 2024-12-31. net income / revenueNet income: −$607.9k. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Revenue: $178.2k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure(31.7%)Net margin, Q1 FY2025, three months to 2025-03-31. net income / revenueNet income: −$177.7k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Revenue: $559.8k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(618.8%)Net margin, Q2 FY2025, three months to 2025-06-30. net income / revenueNet income: −$803.8k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Revenue: $129.9k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure(83.0%)Net margin, Q3 FY2025, three months to 2025-09-30. net income / revenueNet income: −$298.5k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Revenue: $359.4k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figure(1061.5%)Net margin, Q4 FY2025, three months to 2025-12-31. net income / revenueNet income: −$765.6k. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Revenue: $72.1k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure(385.4%)Net margin, Q1 FY2026, three months to 2026-03-31. net income / revenueNet income: −$525.4k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Revenue: $136.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(764.6%)Net margin, Q2 FY2026, three months to 2026-06-30. net income / revenueNet income: −$660.2k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Revenue: $86.3k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure
Diluted EPS$ per share0.00Diluted EPS, Q3 FY2024, three months to 2024-09-30$0.00 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figurenot reported (Diluted EPS not reported)(0.01)Diluted EPS, Q1 FY2025, three months to 2025-03-31−$0.01 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(0.02)Diluted EPS, Q2 FY2025, three months to 2025-06-30−$0.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure(0.01)Diluted EPS, Q3 FY2025, three months to 2025-09-30−$0.01 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-06, accession 0001493152-25-021062.Report this figurenot reported (Diluted EPS not reported)(0.02)Diluted EPS, Q1 FY2026, three months to 2026-03-31−$0.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(0.02)Diluted EPS, Q2 FY2026, three months to 2026-06-30−$0.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001493152-26-036332.Report this figure
Free cash flow$k(259)Free cash flow, Q3 FY2024, three months to 2024-09-30. operating cash flow − capital expenditureOperating cash flow: −$257.9k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-06, accession 0001493152-25-021062. Derived: 9-month figure less the 6-month figure.Capital expenditure: $588. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-06, accession 0001493152-25-021062. Derived: 9-month figure less the 6-month figure.Report this figure46.2Free cash flow, Q4 FY2024, three months to 2024-12-31. operating cash flow − capital expenditureOperating cash flow: $47.1k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Capital expenditure: $881. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure(641)Free cash flow, Q1 FY2025, three months to 2025-03-31. operating cash flow − capital expenditureOperating cash flow: −$641.3k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Capital expenditure: $110. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(78.5)Free cash flow, Q2 FY2025, three months to 2025-06-30. operating cash flow − capital expenditureOperating cash flow: −$78.4k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001493152-26-036332. Derived: 6-month figure less the 3-month figure.Capital expenditure: $99. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-06, accession 0001493152-26-036332. Derived: 6-month figure less the 3-month figure.Report this figure(144)Free cash flow, Q3 FY2025, three months to 2025-09-30. operating cash flow − capital expenditureOperating cash flow: −$143.5k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-06, accession 0001493152-25-021062. Derived: 9-month figure less the 6-month figure.Capital expenditure: $373. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-06, accession 0001493152-25-021062. Derived: 9-month figure less the 6-month figure.Report this figure(466)Free cash flow, Q4 FY2025, three months to 2025-12-31. operating cash flow − capital expenditureOperating cash flow: −$465.9k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Capital expenditure: $144. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-05, accession 0001493152-26-008988. Derived: 12-month figure less the 9-month figure.Report this figure(760)Free cash flow, Q1 FY2026, three months to 2026-03-31. operating cash flow − capital expenditureOperating cash flow: −$759.9k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Capital expenditure: $67. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-08, accession 0001493152-26-021790.Report this figure(191)Free cash flow, Q2 FY2026, three months to 2026-06-30. operating cash flow − capital expenditureOperating cash flow: −$191.3k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001493152-26-036332. Derived: 6-month figure less the 3-month figure.Capital expenditure: $38. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-06, accession 0001493152-26-036332. Derived: 6-month figure less the 3-month figure.Report this figure

Focus or hover a figure to see its XBRL concept, period and filing; each links to that filing. A figure marked d is derived: a quarter computed from year-to-date figures, such as the fourth quarter as the fiscal year less the nine months before it. A ratio reads not reported when any input is missing.

Last five fiscal years

Revenue$1.1mOperating margin −190.2%
Diluted EPS−$0.06, FY2025
Free cash flow−$1.3m, FY2025
Research Frontiers Inc, key figures for the last five fiscal years
Line itemUnitFY20212021-12-31FY20222022-12-31FY20232023-12-31FY20242024-12-31FY20252025-12-31Shape over the periods
Revenue$k1,263Revenue, FY2021, twelve months to 2021-12-31$1.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2023-03-09, accession 0001493152-23-007116.Report this figure540Revenue, FY2022, twelve months to 2022-12-31$539.7k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-03-07, accession 0001493152-24-009207.Report this figure910Revenue, FY2023, twelve months to 2023-12-31$909.6k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-03-06, accession 0001493152-25-009377.Report this figure1,336Revenue, FY2024, twelve months to 2024-12-31$1.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure1,121Revenue, FY2025, twelve months to 2025-12-31$1.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure
Gross margin%not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)not reported (Gross profit not reported)
Operating margin%(145.6%)Operating margin, FY2021, twelve months to 2021-12-31. operating income / revenueOperating income: −$1.8m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2023-03-09, accession 0001493152-23-007116.Revenue: $1.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2023-03-09, accession 0001493152-23-007116.Report this figure(486.4%)Operating margin, FY2022, twelve months to 2022-12-31. operating income / revenueOperating income: −$2.6m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2024-03-07, accession 0001493152-24-009207.Revenue: $539.7k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-03-07, accession 0001493152-24-009207.Report this figure(223.5%)Operating margin, FY2023, twelve months to 2023-12-31. operating income / revenueOperating income: −$2.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-03-06, accession 0001493152-25-009377.Revenue: $909.6k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-03-06, accession 0001493152-25-009377.Report this figure(108.0%)Operating margin, FY2024, twelve months to 2024-12-31. operating income / revenueOperating income: −$1.4m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988.Revenue: $1.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure(190.2%)Operating margin, FY2025, twelve months to 2025-12-31. operating income / revenueOperating income: −$2.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988.Revenue: $1.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure
Net margin%(146.2%)Net margin, FY2021, twelve months to 2021-12-31. net income / revenueNet income: −$1.8m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2023-03-09, accession 0001493152-23-007116.Revenue: $1.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2023-03-09, accession 0001493152-23-007116.Report this figure(494.6%)Net margin, FY2022, twelve months to 2022-12-31. net income / revenueNet income: −$2.7m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2024-03-07, accession 0001493152-24-009207.Revenue: $539.7k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-03-07, accession 0001493152-24-009207.Report this figure(209.8%)Net margin, FY2023, twelve months to 2023-12-31. net income / revenueNet income: −$1.9m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-03-06, accession 0001493152-25-009377.Revenue: $909.6k. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-03-06, accession 0001493152-25-009377.Report this figure(98.2%)Net margin, FY2024, twelve months to 2024-12-31. net income / revenueNet income: −$1.3m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988.Revenue: $1.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure(182.4%)Net margin, FY2025, twelve months to 2025-12-31. net income / revenueNet income: −$2.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-05, accession 0001493152-26-008988.Revenue: $1.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure
Diluted EPS$ per share(0.06)Diluted EPS, FY2021, twelve months to 2021-12-31−$0.06 per share. XBRL concept us-gaap:EarningsPerShareBasicAndDiluted. 10-K filed 2022-03-09, accession 0001493152-22-006393.Report this figure(0.08)Diluted EPS, FY2022, twelve months to 2022-12-31−$0.08 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2024-03-07, accession 0001493152-24-009207.Report this figure(0.06)Diluted EPS, FY2023, twelve months to 2023-12-31−$0.06 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2025-03-06, accession 0001493152-25-009377.Report this figure(0.04)Diluted EPS, FY2024, twelve months to 2024-12-31−$0.04 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure(0.06)Diluted EPS, FY2025, twelve months to 2025-12-31−$0.06 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure
Free cash flow$k(1,805)Free cash flow, FY2021, twelve months to 2021-12-31. operating cash flow − capital expenditureOperating cash flow: −$1.8m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2023-03-09, accession 0001493152-23-007116.Capital expenditure: $1.1k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2023-03-09, accession 0001493152-23-007116.Report this figure(2,184)Free cash flow, FY2022, twelve months to 2022-12-31. operating cash flow − capital expenditureOperating cash flow: −$2.2m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2024-03-07, accession 0001493152-24-009207.Capital expenditure: $1.3k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2024-03-07, accession 0001493152-24-009207.Report this figure(2,297)Free cash flow, FY2023, twelve months to 2023-12-31. operating cash flow − capital expenditureOperating cash flow: −$2.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2025-03-06, accession 0001493152-25-009377.Capital expenditure: $1.6k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2025-03-06, accession 0001493152-25-009377.Report this figure(790)Free cash flow, FY2024, twelve months to 2024-12-31. operating cash flow − capital expenditureOperating cash flow: −$788.8k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-05, accession 0001493152-26-008988.Capital expenditure: $1.6k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure(1,330)Free cash flow, FY2025, twelve months to 2025-12-31. operating cash flow − capital expenditureOperating cash flow: −$1.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-05, accession 0001493152-26-008988.Capital expenditure: $726. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-05, accession 0001493152-26-008988.Report this figure

Focus or hover a figure to see its XBRL concept, period and filing; each links to that filing. A figure marked d is derived: a quarter computed from year-to-date figures, such as the fourth quarter as the fiscal year less the nine months before it. A ratio reads not reported when any input is missing.

Insider purchases and sales

All insider transactions

The last 20 open-market transactions reported on Form 4 (codes P and S). The reported price is the price per share the insider stated on the form: filing data, not a market price.

No open-market purchases or sales by insiders are in coverage from Nov 2024 to Oct 2026.

No open-market purchases or sales by insiders are in coverage for this company.

Funds that report holding it

All funds

From each manager's latest Form 13F, largest reported value first. Reported value is as filed at the quarter end: filing data, not a price. A put or call is an option position, not shares held.

Funds that report holding Research Frontiers Inc
FundQuarter endedReported valueSharesPut or callChange on the quarter before
MGO ONE SEVEN LLC2026-06-30$461.0k886,602Reduced−31,580
VANGUARD CAPITAL MANAGEMENT LLC2026-06-30$301.9k580,654Added+12,500
BlackRock, Inc.2026-06-30$276.9k532,542Reduced−75,856
Focus Partners Wealth2026-06-30$258.1k496,422Unchanged
GEODE CAPITAL MANAGEMENT, LLC2026-06-30$159.1k305,847Added+3,086
VANGUARD FIDUCIARY TRUST CO2026-06-30$92.1k177,030Unchanged
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-30$80.6k155,066Reduced−1,720
STATE STREET CORP2026-06-30$54.9k105,623Unchanged
SHUFRO ROSE & CO LLC2026-06-30$50.7k97,500Unchanged
NORTHERN TRUST CORP2026-06-30$27.4k52,630Unchanged

Recent filings

All 592 filings

Reports and events: 10-K, 10-Q, 8-K, proxy statements and ownership schedules.

Research Frontiers Inc, recent filings
FiledFormWhat it isAccession number
2026-08-0616:02 ET10-QQuarterly reportPeriod 2026-06-300001493152-26-036332
2026-06-1206:02 ET8-K5.07 Shareholder vote results; 9.01 Financial statements and exhibits0001493152-26-028339
2026-06-0517:00 ET8-K3.01 Delisting notice; 9.01 Financial statements and exhibits0001493152-26-027517
2026-05-0818:19 ET10-QQuarterly reportPeriod 2026-03-310001493152-26-021790
2026-04-3016:01 ETDEF 14AProxy statementPeriod 2026-04-300001493152-26-020409
2026-03-1916:01 ET10-K/AAnnual report, amendedPeriod 2025-12-310001493152-26-011611
2026-03-0516:01 ET10-KAnnual reportPeriod 2025-12-310001493152-26-008988
2026-02-1817:30 ET8-K1.01 Entry into a material agreement; 9.01 Financial statements and exhibits0001493152-26-007368
2025-11-0616:02 ET10-QQuarterly reportPeriod 2025-09-300001493152-25-021062
2025-09-1508:35 ET8-K5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits0001493152-25-013406

Latest annual report

Form 10-K for the fiscal year ended Dec 31, 2025Filed Mar 5, 2026. Its page lists the documents and the extracted sections, such as Business and Risk factors.

Forecast league

Q3 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by [object Promise].Forecast this quarter

About the filer

CIK
793524
Tickers
REFR
Exchange
Nasdaq
SIC code
6794 Patent Owners & Lessors
Sector
Financials
Fiscal year ends
Dec 31
Incorporated in
DE
Filer category
Non-accelerated filer<br>Smaller reporting company

Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:24 ET. Listed shows no prices and gives no investment advice.