PainReform reports OcuRing-K Phase I safety data

PainReform Ltd. reported new safety results for OcuRing™-K, a drop-less, sustained-release ocular drug delivery platform being developed with its majority-owned subsidiary LayerBio for use in cataract surgery.

Rhea-AI Filing Summary

PainReform Ltd. reported new safety results for OcuRing™-K, a drop-less, sustained-release ocular drug delivery platform being developed with its majority-owned subsidiary LayerBio for use in cataract surgery. A Phase I clinical study in cataract patients and multiple preclinical rabbit studies showed a favorable safety profile, with no treatment-emergent adverse events related to the study drug, no serious adverse events, and no safety issues linked to the drug delivery platform.

In the human study, reported adverse events were in line with expectations for cataract surgery and consistent with patients’ prior eye conditions, while the investigational product and intraocular lens remained properly positioned in all treated eyes. Preclinical studies similarly showed good local tolerability and no tissue abnormalities compared with control. These findings support continued development and IND-enabling work in the United States for OcuRing™-K’s intraocular system, which is designed for targeted, sustained release of NSAIDs, corticosteroids, or other ophthalmic drugs from a single intraoperative application.

Insights

Biotech and clinical development analyst

Phase I and preclinical data show a clean safety signal for OcuRing™-K, supporting progression toward later-stage U.S. trials.

PainReform and its majority-owned subsidiary LayerBio report that OcuRing™-K, a drop-less, sustained-release intraocular drug delivery platform for cataract surgery, demonstrated a favorable safety profile in both preclinical rabbit studies and a Phase I human trial. The Phase I study in cataract surgery patients showed no treatment-emergent adverse events related to the study drug, no serious adverse events, and no safety issues attributed to the platform, while devices remained properly positioned in all treated eyes.

Preclinical rabbit evaluations likewise indicated favorable local tolerability, with no ocular tissue abnormalities and no meaningful differences versus control vehicle. Together, these findings support continued development and align with the company’s stated plan to advance Investigational New Drug (IND)-enabling activities in the United States. The actual impact for investors will hinge on future later-stage efficacy and safety data and on regulatory feedback once an IND is submitted.

FAQ

What did PainReform (PRFX) announce about OcuRing-K in this 6-K?

PainReform announced that its OcuRing-K drop-less, sustained-release intraocular drug delivery platform showed a favorable safety profile in preclinical rabbit studies and a Phase I clinical trial in cataract surgery patients, supporting continued development toward later-stage studies.

What were the key safety findings for OcuRing-K in the Phase I cataract surgery study?

In the Phase I clinical study, no treatment-emergent adverse events related to the study drug were observed, no serious adverse events were reported, all adverse events were consistent with typical cataract surgery and patients ocular histories, and no safety issues related to the OcuRing-K delivery platform were identified.

What did the preclinical rabbit studies show for OcuRing-K?

Preclinical rabbit studies evaluating ocular tolerability, biocompatibility, and tissue response showed favorable local tolerability, with no evidence of ocular tissue abnormalities and no meaningful differences between OcuRing-K and control vehicle, reinforcing the safety signal seen clinically.

How is OcuRing-K designed to be used in cataract surgery?

OcuRing-K is an intraocular drug delivery system intended to provide targeted, sustained release of non-steroidal anti-inflammatory drugs, corticosteroids, or other ophthalmic therapeutics through a single intraoperative application, using a preservative-free, controlled-release formulation to help minimize local irritation and systemic exposure compared with traditional topical dosing.

What are the next development steps for PainReforms OcuRing-K platform?

Building on prior progress toward an Investigational New Drug submission, PainReform and LayerBio state that IND-enabling activities are underway, with preparation and development efforts intended to support the next phase of clinical evaluation of OcuRing-K in the United States.

What areas does PainReform (PRFX) focus on beyond OcuRing-K?

PainReform describes itself as a diversified innovation company advancing specialty pharmaceutical therapies and AI-driven energy analytics, with drug programs focused on reformulation and sustained-release delivery to improve post-operative pain management and its DeepSolar platform providing AI solutions for monitoring, forecasting, and optimizing solar asset performance.

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Accepted by SEC EDGAR 01/12/2026 - 09:10 AM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

For the month of January 2026

Commission File Number: 001-39481

PainReform Ltd.

(Translation of registrant’s name into English)

65 Yigal Alon St., Tel Aviv 6744316

Israel

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

On January 12, 2026, PainReform Ltd. issued a press release entitled “PainReform’s LayerBio’s Drop-Less OcuRing™-K Delivery Platform Demonstrates Favorable Safety Profile in Preclinical and Phase I Clinical Studies”. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

Exhibit Index

Exhibit No.		Description
99.1		Press Release dated January 12, 2026.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: January 12, 2026	PAINREFORM LTD.
	By:	/s/ Ehud Geller
		Ehud Geller Executive Chairman of the Board and Interim Chief Executive Officer

Exhibit 99.1

PainReform’s LayerBio’s Drop-Less OcuRing™-K Delivery Platform

Demonstrates Favorable Safety Profile in Preclinical and Phase I Clinical Studies

Phase I human study and preclinical evaluations of OcuRing™-K  showed no treatment-related

safety concerns, supporting advancement toward IND submission

Tel Aviv – January 12, 2026 PainReform Ltd. (Nasdaq: PRFX), a clinical-stage specialty pharmaceutical company focused on reformulating established therapeutics for post-operative pain management, together with its majority-owned subsidiary LayerBio, Inc., today announced safety data supporting the continued development of OcuRing™-K drop-less, sustained-release ocular drug delivery platform for use in cataract surgery.

The development program included a series of preclinical rabbit studies evaluating ocular tolerability, biocompatibility, and tissue response, as well as a Phase I clinical study in patients undergoing cataract surgery. Collectively, these studies demonstrated a favorable safety profile for the platform, supporting its advancement toward later-stage development.

In the Phase I clinical study, no treatment-emergent adverse events related to the study drug were observed. All reported adverse events were as expected in the context of cataract surgery, and consistent with subjects’ underlying ocular histories. No serious adverse events were reported, and no safety issues related to the drug delivery platform were identified. The investigational product and intraocular lens devices remained properly positioned in all treated eyes throughout the study.

Preclinical rabbit studies, similarly, demonstrated favorable local tolerability, with no evidence of ocular tissue abnormalities and no meaningful differences observed between the  OcuRing™-K and control vehicle, supporting the consistent safety findings across preclinical and clinical evaluations.

Dr. Ehud Geller, Executive Chairman and interim CEO of PainReform, commented, “The successful completion of both preclinical and Phase I safety evaluation represents an important milestone for OcuRing™-K ’s drop-less drug delivery platform. The consistent safety profile observed across animal models and human subjects supports the continued advancement of this technology as we progress regulatory and clinical development activities.”

OcuRing™-K ’s intraocular drug delivery system is designed to provide targeted, sustained release of non-steroidal anti-inflammatory drugs (NSAIDs), corticosteroids, or other ophthalmic therapeutics through a single intraoperative application. The platform utilizes a preservative-free formulation and controlled-release mechanism intended to minimize local irritation, reduce epithelial toxicity, and limit systemic exposure associated with traditional topical dosing regimens.

Building on previously disclosed progress toward an Investigational New Drug (IND) submission, PainReform and LayerBio are advancing IND-enabling activities, with preparation and development efforts well underway to support the next phase of clinical evaluation in the United States.

About PainReform

PainReform Ltd. (Nasdaq: PRFX) is a diversified innovation company advancing specialty pharmaceutical therapies and AI-driven energy analytics. Its pharmaceutical programs focus on reformulation and sustained-release drug-delivery technologies designed to improve patient outcomes while reducing reliance on opioids and complex dosing regimens. Through its DeepSolar platform, the Company develops advanced AI solutions that enable solar asset owners and operators to monitor, forecast, and optimize energy performance across the full asset lifecycle.

For more information, please visit www.painreform.com.

Notice Regarding Forward-Looking Statements

This press release contains forward-looking statements about PainReform’s expectations, beliefs and intentions including with respect to the ability of Smart TDD to support all major checkpoints in a solar plant’s life. Forward-looking statements can be identified by the use of forward-looking words such as “believe”, “expect”, “intend”, “plan”, “may”, “should”, “could”, “might”, “seek”, “target”, “will”, “project”, “forecast”, “continue” or “anticipate” or their negatives or variations of these words or other comparable words or by the fact that these statements do not relate strictly to historical matters. These forward-looking statements are based on assumptions and assessments made in light of management’s experience and perception of historical trends, current conditions, expected future developments and other factors believed to be appropriate. Forward-looking statements in this press release are made as of the date of this press release, and we undertake no duty to update or revise any such statements, whether as a result of new information, future events or otherwise. Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties, many of which are outside of our control. Many factors could cause our actual activities or results to differ materially from the activities and results anticipated in forward- looking statements, including, but not limited to, the following: our ability to continue as a going concern, our history of significant losses, our need to raise additional capital and our ability to obtain additional capital on acceptable terms, or at all; our dependence on the success of our initial product candidate, PRF-110 OcuRing™-K, LayerBio Inc.’s lead product candidate, and the commercialization of the DeepSolar solution; the outcomes of preclinical studies, clinical trials and other research regarding PRF-110, OcuRing™-K and future product candidates; our limited experience managing clinical trials; our ability to retain key personnel and recruit additional employees; our reliance on third parties for the conduct of clinical trials, product manufacturing and development; the impact of competition and new technologies; our ability to comply with regulatory requirements relating to the development and marketing of our product candidates; our ability to establish and maintain strategic partnerships and other corporate collaborations; the implementation of our business model and strategic plans for our business and product candidates; the scope of protection we are able to establish and maintain for intellectual property rights and our ability to operate our business without infringing the intellectual property rights of others; the overall global economic environment; our ability to develop an active trading market for our ordinary shares and whether the market price of our ordinary shares is volatile; our ability to maintain our listing on the Nasdaq Capital Market; and statements as to the impact of the political and security situation in Israel on our business. More detailed information about the risks and uncertainties affecting us is contained under the heading “Risk Factors” included in the Company’s most recent Annual Report on Form 20-F and in other filings that we have made and may make with the Securities and Exchange Commission in the future.

Contact:

Crescendo Communications, LLC

Tel: 212-671-1021

Email: prfx@crescendo-ir.com

Dr. Ehud Geller

Chairman and interim Chief Executive Officer

PainReform Ltd.

Tel: +972-54-4236711

Email: egeller@medicavp.com