Fourth Quarter 2019 Net Revenue and First Quarter 2020 Net Revenue Guidance

Gross product revenue net of discounts, rebates, and returns, which the Company refers to as total net product revenue was $2.3 million for the three-months ended December 31, 2019 reflecting a 172% sequential increase over total net product revenue reported in the third quarter ended September 30, 2019. Net product revenue of DEXTENZA® in the fourth quarter 2019 was $1.6 million versus $0.3 million in the third quarter ended September 30, 2019 and reflects a more than four times sequential increase. Total net product revenue for the fourth quarter of 2019 also includes net product revenue of $0.7 million from ReSure® Sealant. The Company expects to report its audited results for the 2019 fiscal year later this month.

DEXTENZA net revenue in the quarter was driven by continued increase in the number of new accounts prescribing DEXTENZA and re-order rates by existing accounts. In addition to the trends in the fourth quarter, the Company is seeing increased interest from larger accounts at the start of 2020. Based on these current trends and the 50% expansion of Key Account Managers to approximately 30 in November 2019, the Company expects DEXTENZA net revenue for the first quarter of 2020 to be in the range of $2.4 million to $2.6 million. Combined with anticipated net revenues from ReSure Sealant of approximately $0.6 million, the Company expects total net product revenue for the first quarter of 2020 to be $3.0 million to $3.2 million.

“We are pleased with our progress and with the results we are seeing in the early stages of the DEXTENZA launch,” said Antony Mattessich, President and Chief Executive Officer. “Increases in new accounts, re-order rates, and average order size are all metrics we are seeing that reinforce our belief that DEXTENZA’s differentiated product profile is resonating with surgeons as a novel treatment for ocular inflammation and pain following ophthalmic surgery. In addition, with encouraging interim results in OTX-TKI for the treatment of wet age-related macular degeneration and in OTX-TIC for the treatment of glaucoma that were announced today and a few weeks ago respectively, we are beginning to see the potential of our early-stage product pipeline. We look forward to providing additional updates on these programs later in the year and to a productive 2020.”

Interim Phase 1 Data on OTX-TKI

The Phase 1, multi-center, open-label, dose escalation clinical trial being conducted in Australia is intended to evaluate the safety, durability, tolerability, and biological activity of OTX-TKI for the treatment of wet age-related macular degeneration. Two cohorts of six subjects each have been enrolled, a lower dose cohort of 200 μg and a higher dose cohort of 400 μg. In the first two fully enrolled cohorts, OTX-TKI was generally well tolerated and observed to have a favorable safety profile with no ocular serious adverse events noted. In the higher dose cohort, OTX-TKI showed a decrease in retinal fluid as measured by decreases in intraretinal and/or subretinal fluid in some subjects. The Company plans to continue long-term evaluation of the first two cohorts. This Phase 1 clinical trial is not powered to measure any efficacy endpoints with statistical significance.

“For patients with wet age-related macular degeneration and retinal diseases, there is a need for both products with new mechanisms of action and for products that are able to provide longer-acting therapy than current anti-VEGF products on the market today,” said Dr. Michael Goldstein, Chief Medical Officer of Ocular Therapeutix. “While still early, initial data from this Phase 1 study with a tyrosine kinase inhibitor indicate that OTX-TKI has the potential to decrease intraretinal and subretinal fluid in patients with wet-age-related macular degeneration. We look forward to following these patients to assess the long-term durability of the response. The safety and biological activity seen in this trial is consistent with our pre-clinical animal studies and the data support both ongoing testing as a monotherapy and in combination with other anti-VEGF injections where OTX-TKI could extend the efficacy of those products thereby requiring less frequent dosing.”

About OTX-TKI

OTX-TKI (tyrosine kinase inhibitor implant) is a preformed, bioresorbable hydrogel that contains TKI particles in an injectable fiber that can be delivered through a small-gauge, sterile injection needle to the back of the eye. OTX-TKI is designed to deliver drug to the target tissues for an extended duration of up to 12 months, thereby potentially extending the dosing interval from the one to two-month frequency needed with the current standard of care. The Company has initiated an ex-U.S. multi-center, open-label, dose escalation Phase 1 study to test the safety, durability, tolerability, and biological activity.

About Ocular Therapeutix, Inc.

Ocular Therapeutix, Inc. is a biopharmaceutical company focused on the formulation, development, and commercialization of innovative therapies for diseases and conditions of the eye using its proprietary bioresorbable hydrogel-based formulation technology. Ocular Therapeutix’s first commercial drug product, DEXTENZA®, is FDA-approved for the treatment of ocular inflammation and pain following ophthalmic surgery. Ocular Therapeutix is conducting a Phase 3 clinical trial evaluating DEXTENZA for the treatment of ocular itching associated with allergic conjunctivitis. OTX-TP (intracanalicular travoprost insert) is an intracanalicular insert in Phase 3 clinical development for the reduction of intraocular pressure in patients with primary open-angle glaucoma and ocular hypertension. The Company’s earlier stage assets include OTX-TIC, an extended-delivery intracameral travoprost implant for the reduction of intraocular pressure in patients with glaucoma and ocular hypertension, as well as sustained release intravitreal implants for the treatment of retinal diseases. These intravitreal implants include OTX-TKI, containing a tyrosine kinase inhibitor (TKI), and, in collaboration with Regeneron, OTX-IVT, an extended-delivery protein-based anti-vascular endothelial growth factor (VEGF) trap. Ocular Therapeutix’s first product, ReSure® Sealant, is FDA-approved to seal corneal incisions following cataract surgery.