NOTE 13 – SUBSEQUENT EVENTS

Nasdaq Listing

Our common stock began trading on the Nasdaq Capital Market on August 10, 2021, under the symbol “PMCB.” Prior to that, our common stock was quoted on the OTCQB Market under the symbol “PMCB,” and following the reverse stock split of our common stock effective as of July 12, 2021, and until August 6, 2021, the OTCQB Market Symbol for our common stock had temporarily been PMCBD.

August 2021 Underwritten Offering

On August 9, 2021, the Company entered into an underwriting agreement with H.C. Wainwright & Co. LLC (“Wainwright”) with respect to a public offering of 2,630,385 shares (“Shares”) of common stock, with a par value of $0.0001, 899,027 Pre-funded warrants (“Pre-funded Warrants”) to purchase common stock and common stock warrants (“Common Warrants”) to purchase 3,529,412 shares of common stock. The total gross proceeds of the offering before deduction of underwriting discounts, commissions and estimated offering expenses payable by the Company was approximately $15 million pursuant to the Third S-3. Each share of common stock (or pre-funded warrant in lieu thereof) was sold together with one warrant to purchase one share of common stock at an effective combined public offering price of $4.25 per share of common stock and accompanying warrant, less underwriting discounts and commissions. The Common Warrants have an exercise price of $4.25 per share, are exercisable immediately, and will expire five years following the date of issuance. The Pre-funded Warrants have an exercise price of $0.001 per share, are exercisable immediately, and do not have an expiration date. In addition, the Company granted the Underwriter a 30-day option to purchase up to 529,411 Shares and/or Common Warrants at the public offering price, less underwriting discounts and commissions, which the underwriter has partially exercised for Common Warrants to purchase an aggregate of up to 499,116 shares of common stock.

August 2021 Registered Direct Offering and Concurrent Private Placement

On August 19, 2021, the Company entered into a Purchase Agreement with certain institutional investors. Pursuant to the Purchase Agreement, the Company agreed to sell in a Registered Direct Offering 8,430,000 shares (“Shares”) of the Company’s Common Stock, with a par value of $0.0001, and Pre-funded warrants to purchase up to 5,570,000 shares of Common Stock. The Pre-Funded Warrants have an exercise price of $0.001 per share and are immediately exercisable and can be exercised at any time after their original issuance until such Pre-Funded Warrants are exercised in full. Each Share was sold at an offering price of $5.00 and each Pre-Funded Warrant was sold at an offering price of $4.999 (equal to the purchase price per Share minus the exercise price of the Pre-Funded Warrant). Pursuant to the Purchase Agreement, in a concurrent private placement (together with the Registered Direct Offering, the “August 19 Offerings”), the Company also agreed to issue to the Purchasers unregistered warrants (“Series A Warrants”) to purchase up to 7,000,000 shares of Common Stock. Each Series A Warrant has an exercise price of $5.00 per share, is exercisable immediately, and will expire five years following the date of issuance. The Company receives gross proceeds from the August 19 Offerings, before deducting placement agent fees and other estimated offering expenses payable by the Company, of approximately $70 million.

In addition, the Company issued to Wainwright or its designees upon closing of the August 19 Offerings warrants (“Placement Agent Warrants”) to purchase 1,050,000 shares of common stock at an exercise price of $6.25 per share (which represents 125% of the offering price per Share in the August 19 Offerings). The Placement Agent Warrants will terminate five years after the date of commencement of sales in the Offerings.

August 2021 Warrant Exercises

As of August 18, 2021, all 899,027 of the Pre-funded Warrants issued in the August 2021 underwritten offering have been exercised.

As of August 31, 2021, 2,522,387 of the Common Warrants issued in the August 2021 underwritten offering have been exercised, for aggregate gross proceeds to the Company of $10,720,145.

As of August 31, 2021, 4,620,000 of the Pre-funded Warrants issued in the August 19, 2021 Offerings have been exercised, for aggregate gross proceeds to the Company of $4,620.