On February 16, 2021 Sonnet BioTherapeutics Holdings, Inc. (NASDAQ:SONN) ("Sonnet" or the "Company"), a biopharmaceutical company developing innovative targeted biologic drugs, reported its financial results for the three months ended December 31st, 2020 and provided a business update (Press release, Sonnet BioTherapeutics, FEB 16, 2021, View Source [SID1234579514]).

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"During the past few months, we have continued to accrue pre-clinical data for our lead platform asset, SON-1010. IL-12 has historically been a difficult target given the toxicities associated with its use," commented Pankaj Mohan, Ph.D., Founder and CEO. "To this end, we are increasingly more encouraged that our FHAB technology has the capacity to improve the therapeutic window of IL-12 and will help Sonnet position the SON-1010 asset as a potentially viable therapeutic candidate of significant value to patients and physicians."

First Quarter FY 2021 and Recent Corporate Updates
Sonnet provided the following updates on its lead pipeline assets:

The Company successfully completed a single- and multiple-dose non-human primate (NHP) study with SON-1010, the Company’s proprietary fully human Interleukin 12 (IL-12) therapeutic candidate configured using the Fully Human Albumin Binding (FHAB) platform. These two studies help to inform and de-risk the design of follow-on NHP studies needed to file an IND with the FDA. Importantly, the data demonstrated a well-tolerated agent with interferon-γ levels suggesting potent on-target activity. The Company will present additional data from the NHP studies at the American Association of Cancer Research (AACR) (Free AACR Whitepaper) Virtual Annual Meeting in April. The Company plans to file an IND and initiate Phase 1 clinical development in SON-1010 in the second half of 2021.

In SON-080 (low-dose recombinant fully human Interleukin 6, or IL-6), the Company is planning to file an IND and initiate Phase 1b/2a pilot efficacy clinical trials during the second half of 2021 for Chemotherapy Induced Peripheral Neuropathy (CIPN), followed by a Phase 1b/2a pilot efficacy trial for Diabetic Peripheral Neuropathy (SON-081) in 2022.

The previously announced letter of intent to negotiate a licensing agreement with New Life Therapeutics with respect to SON-080 and SON-081 continues on-track. The Company expects to finalize this agreement during the first quarter of 2021.

Sonnet is also developing SON-1210 (IL15-FHAB-IL12), the Company’s lead bispecific construct combining FHAB with fully human IL-12 and fully human Interleukin 15 (IL-15), for solid tumor indications, including colorectal cancer. An IND submission for SON-1210 is expected during the second half of 2021.

Fiscal 2021 First Quarter Ended December 31, 2020 Financial Results

Jay Cross, CFO, commented, "Our cash management strategies have been successful over the past quarter, but more importantly we have recently begun to draw from our ATM offering program, strengthening our balance sheet. With the ATM open, we also decided to close the share subscription facility."

As of December 31, 2020, Sonnet had $2.3 million cash on hand.
As previously announced, on February 5, 2021, Sonnet entered into an at-the-market sales agreement with BTIG, LLC, for an aggregate offering of up to $15.9 million. As of today, the Company has sold 380,199 shares for net proceeds of $1.1 million to Sonnet.
All of the Company’s previously outstanding Series A and Series B warrants (except for approximately 42 thousand Series B warrants) have been exercised. The Company has 11.3 million Series C Warrants outstanding with an exercise price of $3.19 that will expire on October 16, 2025. In the event all the Series C Warrants were exercised for cash, the Company would receive up to an additional $36.1 million.
Research and development expenses were $3.9 million for the three months ended December 31, 2020, compared to $1.4 million for the three months ended December 31, 2019. The increase of $2.5 million was primarily due to the development of the cell line for IL12-FHAB and IL12-FHAB-IL15 manufacturing and increased costs for research and development activities due to the acquisition of Relief Therapeutics SA, including an increase in payroll and share-based compensation expense as the Company expanded its operations.
General and administrative expenses were $2.0 million for the three months ended December 31, 2020, compared to $1.1 million for the three months ended December 31, 2019. The increase of $0.9 million was primarily due to an increase in insurance expenses related to directors and officer’s insurance, and an increase in payroll and share-based compensation expense as the Company expanded its operations to support its overall business objectives.
The $20 million share subscription facility that was previously in place has been terminated.