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Sarasota, FL, May 19, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN) ("Oragenics" or the "Company"), a clinical-stage biopharmaceutical company pioneering neurological therapeutics, will present and host one-on-one meetings with investors at Sidoti's Micro-Cap Virtual Investor Conference, taking place on May 20-21, 2026.

A MESSAGE FROM OUR CHIEF EXECUTIVE OFFICER Sarasota, FL, May 18, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN) Dear Fellow Shareholders, Since our last investor update, Oragenics has continued to execute across all fronts - in the clinic, in the regulatory pipeline, on our balance sheet, and strategically.

A MESSAGE FROM OUR CHIEF EXECUTIVE OFFICER Sarasota, FL, May 18, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN) Dear Fellow Shareholders, Since our last investor update, Oragenics has continued to execute across all fronts — in the clinic, in the regulatory pipeline, on our balance sheet, and strategically. We have reached a pivotal moment: our Phase IIa clinical trial of ONP-002 is active in Australia, patients are being enrolled and dosed, and we have now signed a Letter of Intent to pursue a licensing agreement for a complementary CNS-related medical device.

The Expected License Agreement Would Position Oragenics as the Only Company with Therapeutic Strategies Targeting TBI-Induced Inflammation on Both Sides of the Blood-Brain Barrier Sarasota, FL and San Diego, CA, May 07, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN) ("Oragenics" or the "Company"), a clinical-stage biopharmaceutical company pioneering neurological therapeutics, and Sigyn Therapeutics, Inc.

The Expected License Agreement Would Position Oragenics as the Only Company with Therapeutic Strategies Targeting TBI-Induced Inflammation on Both Sides of the Blood-Brain Barrier

SARASOTA, Fla., May 05, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN), a clinical-stage biotechnology company developing brain-targeted therapeutics through proprietary intranasal delivery technology, today announced that Alfred Hospital is now actively enrolling participants in its ongoing Phase IIa clinical trial evaluating ONP-002, the Company's lead candidate for the treatment of concussion and mild traumatic brain injury (mTBI). To date, four patients have been enrolled and dosed at Mackay Base Hospital in Queensland, Australia, the first site activated in the trial.

• Enrollment underway at Mackay Base Hospital in Queensland, Australia; additional sites in final activation stages SARASOTA, Fla. , April 20, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN), a clinical-stage biotechnology company developing brain-targeted therapeutics through proprietary intranasal delivery technology, today announced that 2 patients and 8 study drug doses have been administered in its ongoing Phase IIa clinical trial evaluating ONP-002, the Company's lead candidate for the treatment of mild traumatic brain injury (mTBI) a.

SARASOTA, Fla., April 13, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN), a clinical-stage biotechnology company developing brain-targeted therapeutics through proprietary intranasal delivery technology, today announced that the first patient has been dosed in its ongoing Phase IIa clinical trial evaluating ONP-002, the Company's lead candidate for the treatment of concussion and mild traumatic brain injury (mTBI). The milestone was achieved at Mackay Hospital in Australia — the first site to be activated in the trial — within days of site activation on March 31, 2026.

Oragenics, Inc. (NYSEAMERICAN:OGEN - Get Free Report) was the recipient of a significant increase in short interest during the month of March. As of March 13th, there was short interest totaling 792,779 shares, an increase of 39.0% from the February 26th total of 570,220 shares. Based on an average daily trading volume, of 442,572 shares,

SARASOTA, Fla., March 25, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN), a clinical-stage biotechnology company pioneering brain-targeted therapeutics through proprietary intranasal delivery technology, announced that, as previously disclosed in its Annual Report on Form 10-K for the year ended December 31, 2025, which was filed on March 16, 2026 with the Securities and Exchange Commission, the audited consolidated financial statements contained an unqualified audit opinion from its independent registered public accounting firm that included an explanatory paragraph related to the Company's ability to continue as a going concern. See further discussion in footnote 1 to the Company's consolidated financial statements included in the Company's Annual Report on Form 10-K. This announcement is made pursuant to NYSE American LLC Company Guide Section 610(b), which requires public announcement of the receipt of an audit opinion containing a going concern paragraph. This announcement does not represent any change or amendment to the Company's financial statements or to its Annual Report on Form 10-K for the year ended December 31, 2025.

FIRST SITE INITIATION VISIT COMPLETED IN AUSTRALIA SARASOTA, Fla., March 12, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN), a clinical-stage biotechnology company pioneering brain-targeted therapeutics through proprietary intranasal delivery technology, today announced it has completed the first site initiation visit (SIV) for its Phase IIa clinical trial of ONP-002 in Australia.

SARASOTA, Fla., March 11, 2026 (GLOBE NEWSWIRE) -- Oragenics, Inc. (NYSE American: OGEN), a clinical-stage biotechnology company pioneering brain-targeted therapeutics through proprietary intranasal delivery technology, today announced that it is exploring discussions with third parties regarding the potential acquisition of additional assets in the central nervous system (CNS) space, with a specific focus on brain health and brain recovery indications that demonstrate strategic synergies with the Company's lead candidate ONP-002 and its proprietary intranasal drug delivery platform.

All required regulatory approvals secured for trial site onboarding and patient enrollment at three Australian sites Potential first and only pharmacological treatment for the most prominent neurological condition without an FDA-approved therapeutic
