--- schema_version: "secwatch.filing_event.v1" accession: "0001493152-26-000822" form_type: "8-K" ticker: "NIMU" cik: "0000720762" company_name: "NON INVASIVE MONITORING SYSTEMS INC /FL/" filed_at: "2026-01-07T23:59:59+00:00" generated_at: "2026-05-16T11:28:17.359198+00:00" event_type: "debt" sentiment: "neutral" materiality_score: 0.5 calibrated_materiality_score: 0.5 confidence: "high" source: SEC EDGAR --- # NIMS extends $620K in related-party notes to June 30, 2026; issues new $100K note at 11% ## Summary - Extended maturity on nine promissory notes with Frost Gamma Investments Trust and Dr. Jane Hsiao from Dec 31, 2025 to June 30, 2026. - New $100,000 note issued Jan 2, 2026 to Frost Gamma Investments Trust at 11% annual interest, maturing June 30, 2026. - Total principal of extended notes: $620,000 (aggregate of nine notes ranging from $25,000 to $200,000). - All notes are with entities controlled by director Dr. Phillip Frost and Chairman/CEO Dr. Jane Hsiao, each owning >10% of common stock. - Interest on new note payable at maturity; no other amendment terms beyond maturity extension. ## SEC filing metadata - accession: 0001493152-26-000822 - form_type: 8-K - ticker: NIMU - cik: 0000720762 - company_name: NON INVASIVE MONITORING SYSTEMS INC /FL/ - filed_at: 2026-01-07T23:59:59+00:00 - event_type: debt - sentiment: neutral - materiality_score: 0.5 - calibrated_materiality_score: 0.5 - confidence: high - sec_items: 1.01, 2.03, 9.01 - EDGAR index: https://www.sec.gov/Archives/edgar/data/720762/000149315226000822/0001493152-26-000822-index.htm - EDGAR primary document: https://www.sec.gov/Archives/edgar/data/720762/000149315226000822/form8-k.htm ## Machine-readable alternates - HTML: https://secwatch.observer/filing/0001493152-26-000822 - JSON: https://secwatch.observer/filing/0001493152-26-000822.json - Plain text: https://secwatch.observer/filing/0001493152-26-000822.txt ## Key facts - Debt Financings NON INVASIVE MONITORING SYSTEMS INC /FL/ amended loan of $75,000.00 with Frost Gamma Investments Trust maturing June 30, 2026. - Instrument: loan - Principal: $75,000.00 - Counterparty: Frost Gamma Investments Trust - Maturity: June 30, 2026 - Event: amendment source text: Third Amendment to 2021 Frost Gamma Investments Trust Promissory Note On January 5, 2026, Non-Invasive Monitoring Systems, Inc. (“NIMS”) entered into the Third Amendment to that certain Promissory Note dated October 4, 2021 in the principal amount of $75,000.00 with Frost Gamma Investments Trust (the “2021 Frost Gamma Note”), a trust controlled by Dr. Phillip Frost, a current director, which beneficially owns in excess of 10% of our common stock. The maturity date on the 2021 Frost Gamma Note was amended from December 31, 2025 until June 30, 2026. No other provisions of the 2021 Frost Gamma Note were amended. evidence_url: https://www.sec.gov/Archives/edgar/data/720762/000149315226000822/0001493152-26-000822-index.htm - Debt Financings NON INVASIVE MONITORING SYSTEMS INC /FL/ amended loan of $75,000.00 with Frost Gamma Investments Trust maturing June 30, 2026. - Instrument: loan - Principal: $75,000.00 - Counterparty: Frost Gamma Investments Trust - Maturity: June 30, 2026 - Event: amendment source text: Third Amendment to 2022 Frost Gamma Investments Trust Promissory Note On January 5, 2026, NIMS entered into the Third Amendment to that certain Promissory Note dated September 16, 2022 in the principal amount of $75,000.00 with Frost Gamma Investments Trust (the “2022 Frost Gamma Note”), a trust controlled by Dr. Phillip Frost, a current director, which beneficially owns in excess of 10% of our common stock. The maturity date on the 2022 Frost Gamma Note was amended from December 31, 2025 until June 30, 2026. No other provisions of the 2022 Frost Gamma Note were amended. evidence_url: https://www.sec.gov/Archives/edgar/data/720762/000149315226000822/0001493152-26-000822-index.htm - Debt Financings NON INVASIVE MONITORING SYSTEMS INC /FL/ amended loan of $200,000.00 with Frost Gamma Investments Trust maturing June 30, 2026. - Instrument: loan - Principal: $200,000.00 - Counterparty: Frost Gamma Investments Trust - Maturity: June 30, 2026 - Event: amendment source text: Second Amendment to 2023 Frost Gamma Investments Trust Promissory Note On January 5, 2026, NIMS entered into the Second Amendment to that certain Promissory Note dated August 15, 2023 in the principal amount of $200,000.00 with Frost Gamma Investments Trust (the “2023 Frost Gamma Note”), a trust controlled by Dr. Phillip Frost, a current director, which beneficially owns in excess of 10% of our common stock. The maturity date on the 2023 Frost Gamma Note was amended from December 31, 2025 until June 30, 2026. No other provisions of the 2023 Frost Gamma Note were amended. evidence_url: https://www.sec.gov/Archives/edgar/data/720762/000149315226000822/0001493152-26-000822-index.htm - Debt Financings NON INVASIVE MONITORING SYSTEMS INC /FL/ amended loan of $75,000.00 with Dr. Jane Hsiao maturing June 30, 2026. - Instrument: loan - Principal: $75,000.00 - Counterparty: Dr. Jane Hsiao - Maturity: June 30, 2026 - Event: amendment source text: Third Amendment to 2021 Hsiao Promissory Note On January 5, 2026, NIMS entered into the Third Amendment to that certain Promissory Note dated October 4, 2021 in the principal amount of $75,000.00 with Dr. Jane Hsiao (the “2021 Hsiao Note”), NIMS’ Chairman of the Board and Interim Chief Executive Officer and a beneficial owner in excess of 10% of our common stock. The maturity date on the 2021 Hsiao Note was amended from December 31, 2025 until June 30, 2026. No other provisions of the 2021 Hsiao Note were amended. evidence_url: https://www.sec.gov/Archives/edgar/data/720762/000149315226000822/0001493152-26-000822-index.htm - Debt Financings NON INVASIVE MONITORING SYSTEMS INC /FL/ amended loan of $75,000.00 with Dr. Jane Hsiao maturing June 30, 2026. - Instrument: loan - Principal: $75,000.00 - Counterparty: Dr. Jane Hsiao - Maturity: June 30, 2026 - Event: amendment source text: Third Amendment to 2022 Hsiao Promissory Note On January 5, 2026, NIMS entered into the Third Amendment to that certain Promissory Note dated September 16, 2022 in the principal amount of $75,000.00 with Dr. Jane Hsiao (the “2022 Hsiao Note”), NIMS’ Chairman of the Board and Interim Chief Executive Officer and a beneficial owner in excess of 10% of our common stock. The maturity date on the 2022 Hsiao Note was amended December 31, 2025 until June 30, 2026. No other provisions of the 2022 Hsiao Note were amended. evidence_url: https://www.sec.gov/Archives/edgar/data/720762/000149315226000822/0001493152-26-000822-index.htm This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.