HYPDHyperion DeFi

Please balance the stated advantages you believe your micro-therapeutic solution by expanding the discussion of the "Risks Associated with our Business" to provide a similar level of detail and relocating the discussion to immediately follow "Our Strategy."

to the Staff’s comment, we have revised the prospectus summary in the Registration Statement to expand the discussion of the “Risks Associated with our Business” and relocated the discussion. Read in the reply ↗

Your product candidates appear to require a device for administering. Please clarify whether you have FDA approval for the device used for administration and the electronic system used to track administration. If you have not yet obtained FDA approval, please describe your plans to obtain approval. Additionally, expand your Business discussion to describe applicable government regulation of medical devices.

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If you believe you do not need FDA approval for the devices, please provide us with an analysis supporting your determination.

We respectfully advise the Staff that following our

March 2017 meeting with the FDA, the FDA provided written feedback that our clinical programs will not be treated as a medical device or as a drug/device combination. All of our programs are treated as drug development programs because only the drug comes into contact with the eye. Consequently, we do not need separate FDA approval for the device or to comply with FDA regulations for medical devices. In response to the Staff’s comment, we have revised pages 2 and 64 of the

Registration Statement to include the requested disclosure. Read in the reply ↗

Please disclose the research and development expenses incurred by project for the periods presented. If you do not separately track certain costs (e.g. internal costs) by projects, disclose that fact and disclose those costs by type of costs (e.g. facilities, personnel, etc.).

to the Staff’s comment, we have revised pages

55 and 56 of the Registration Statement to include the requested disclosure. Read in the reply ↗

Please revise to disclose the following information. You may cross-reference to the extent that this, or other material information relevant to share-based compensation, is provided elsewhere in the preliminary prospectus. • The methods that management used to determine the fair value of the company’s shares and the nature of the material assumptions involved.

Rest of the question

• The extent to which the estimates are considered highly complex and subjective; and • The estimates will not be necessary to determine the fair value of new awards once the underlying shares begin trading.

to the Staff’s comment, we have revised pages

57, 58, F-8, F-10 and F-26 of the Registration Statement to include the requested disclosure. Read in the reply ↗

We may have additional comments on your accounting for equity issuances including stock based compensation and convertible instruments. Once you have an estimated offering price, please provide us an analysis explaining the reasons for the differences between the recent valuations of your common stock leading up to the IPO and the estimated offering price.

Rest of the question

Include the following in your analysis: • The issuance dates and the fair value of the underlying stock at each date; and • The significant factors, assumptions, methodologies used for each grant date. In addition, to the extent the common stock fair value significantly varies from the preferred stock issuance price, tell us the factors that contributed to the difference and explain how you considered the fact that the preferred stocks are convertible at a 1-for-1 ratio and are not redeemable.

We acknowledge that the Staff may have additional comments on our accounting for equity issuances and undertake to supplementally provide the requested analysis under separate cover. Read in the reply ↗

Please expand your discussion regarding your license agreement with the Senju Pharmaceuticals Co., Ltd. with respect to your MicroStat program to disclose the material terms, including the term, any royalty term and termination provisions, as well as any royalty or other material payment provisions.

to the Staff’s comment, we have revised page

74 of the Registration Statement to include the requested disclosure. Read in the reply ↗

We note that your licensing partnership with Senju Pharmaceuticals is for Asia, including China. To the extent material to your business, please disclose the jurisdictions where you have been issued patents or pending patent applications.

to the Staff’s comment, we have revised page

77 of the Registration Statement to include the requested disclosure. Read in the reply ↗

Please revise to clarify the description of the business experience for Jennifer Clasby, Luke Clauson, and Shuhei Yoshida so that it covers each person´s principal occupations and employment during the past five years and provides all the information required by Item 401(e) of Regulation S-K.

to the Staff’s comment, we have revised pages

92 and 94 of the Registration Statement to include the requested disclosure. Read in the reply ↗

Please confirm to us that you have no outstanding obligations and are not eligible to receive any milestones under the Senju license agreement. Otherwise, please disclose these terms.

We hereby confirm that we have no outstanding obligations and are not currently eligible to receive any milestone payments under the Senju license agreement. Read in the reply ↗

Please supplementally provide us with copies of all written communications, as defined in Rule 405 under the Securities Act, that you, or anyone authorized to do so on your behalf, present to potential investors in reliance on Section 5(d) of the Securities Act, whether or not they retain copies of the communications.

We will supplementally provide the Staff with copies of all such written communications, if any, under separate cover. We further advise the Staff that investors will not retain copies of any such materials. Read in the reply ↗

Please provide us proofs of any additional graphics, visual, or photographic information you will provide in the printed prospectus prior to its use, for example in a preliminary prospectus. Please note that we may have comments regarding this material.

To the extent not already included, we will provide the Staff with copies of any graphics, visual, or photographic information that we intend to use in the printed prospectus prior to its use.

We acknowledge that the Staff may have comments regarding this material.

We thank the Staff in advance for its consideration of the Registration Statement. Should you have any questions regarding the foregoing, please contact Benjamin Reichel, Esq. of

Ellenoff Grossman & Schole LLP at (212) 370-1300. Read in the reply ↗

We have reviewed your revised disclosures in response to prior comment 3. Please revise to disclose, if true, that you do not track research and development costs by project.

No reply letter found.

We have reviewed your revised disclosures in response to prior comment 4. In your disclosures, you indicate that you obtained a third-party valuation of your common stock that was done in accordance with the guidance outlined in the American Institute of Certified Public Accountants' Accounting and Valuation Guide, Valuation of Privately- Held-Company Equity Securities Issued as Compensation.

Rest of the question

Please revise to disclose the specific method(s) the third party used to determine the fair value of the company's shares and the nature of the material assumptions involved.

No reply letter found.