Stock-Based Compensation

3 Months Ended

Mar. 31, 2023

Note 7 – Stock-Based Compensation

In 2014, the Company’s stockholders approved the 2014 Equity Incentive Plan pursuant to which the Company may grant up to 91,367 shares as ISOs, NQs and restricted stock units (“RSUs”), subject to increases as hereafter described (the “Plan Limit”). In addition, on January 1, 2015 and each January 1 thereafter and prior to the termination of the 2014 Equity Incentive Plan, pursuant to the terms of the 2014 Equity Incentive Plan, the Plan Limit was and shall be increased by the lesser of (x) 4% of the number of shares of Common Stock outstanding as of the immediately preceding December 31 and (y) such lesser number as the Board of Directors may determine in its discretion. In March 2019, the Plan was amended and restated which removed the annual increase component and was limited to 826,292 shares.

As previously disclosed, on December 8, 2020, the Board of Directors of the Company adopted, subject to stockholder approval, the Second Amended and Restated PDS Biotechnology Corporation 2014 Equity Incentive Plan (the “Restated Plan”), which would amend and restate the Amended and Restated PDS Biotechnology Corporation 2014 Equity Incentive Plan (the “Current Plan”). At the annual meeting of stockholders on June 17, 2021, the stockholders voted to approve the Restated Plan at the Annual Meeting. The Restated Plan is identical to the Current Plan in all material respects, except as follows: (a) the number of shares of Common Stock authorized for issuance under the Restated Plan will increase from 826,292 shares to 3,339,243 shares, plus the total number of shares that remained available for issuance, that are not covered by outstanding awards issued under the Current Plan, immediately prior to December 8, 2020; and (b) the Restated Plan will terminate on December 7, 2030, unless earlier terminated. As of March 31, 2023, there were 178,513 shares available for grant under the Restated Plan.

In 2018, the Company’s stockholders approved the 2018 Stock Incentive Plan pursuant to which the Company may grant up to 558,071 shares as (i) Stock Options, (ii) Stock Appreciation Rights, (iii) Restricted Stock, (iv) Preferred Stock, (v) Stock Reload Options and/or (vi) Other Stock-Based Awards. As of March 31, 2023, there were 190,799 shares available for grant under the Restated Plan.

Pursuant to the terms of the Plans, ISOs have a term of ten years from the date of grant or such shorter term as may be provided in the option agreement. Unless specified otherwise in an individual option agreement, ISOs generally vest over a four-year period. Unless terminated by the Board, the Plans shall continue to remain effective for a term of ten years or until such time as no further awards may be granted and all awards granted under the Plans are no longer outstanding.

On June 17, 2019, the Board adopted the 2019 Inducement Plan (the “Inducement Plan”). The Inducement Plan provides for the grant of non-qualified stock options. The Inducement Plan was recommended for approval by the Compensation Committee of the Board and subsequently approved and adopted by the Board without stockholder approval pursuant to Rule 5635(c)(4) of the Nasdaq Listing Rules. On December 8, 2020, the Company amended the Inducement Plan solely to increase the total number of shares of Common Stock reserved for issuance under the Inducement Plan from 200,000 shares to 500,000 shares. On May 17, 2022, the Company further amended the Inducement Plan solely to increase the total number of shares of Common Stock reserved for issuance under the Inducement Plan from 500,000 shares to 1,100,000 shares. The 2019 Inducement Plan is administered by the Compensation Committee of the Board. In accordance with Rule 5635(c)(4) of the Nasdaq Listing Rules, non-qualified stock options under the 2019 Inducement Plan may only be made to an employee who has not previously been an employee or member of the Board (or any parent or subsidiary of the Company), or following a bona fide period of non-employment by the Company (or a parent or subsidiary of the Company), if he or she is granted such non-qualified stock options in connection with his or her commencement of employment with the Company or a subsidiary and such grant is an inducement material to his or her entering into employment with the Company or such subsidiary. As of March 31, 2023, there were 215,215 shares available for grant under the 2019 Inducement Plan.

The Company’s stock-based compensation expense related to stock options was recognized in operating expense as follows:

	Three Months Ended March 31,
	2023		2022
	(unaudited)
Stock-Based Compensation
Research and development	$	800,764	$	369,050
General and administrative		1,279,555		759,923
Total	$	2,080,319	$	1,128,973

The fair value of options granted during the three months ended March 31, 2023 and 2022 was estimated using the Black-Scholes option valuation model utilizing the following assumptions:

	Three Months Ended March 31,
	2023			2022
	Weighted Average			Weighted Average
	(unaudited)
Volatility		142.02	%		99.13	%
Risk-Free Interest Rate		4.06	%		1.10	%
Expected Term in Years		6.08			6.64
Dividend Rate		–			–
Fair Value of Option on Grant Date	$	10.79		$	4.88

There was 1,124,600 and 945,005 of options granted during the three months ended March 31, 2023 and 2022, respectively.

The following table summarizes the number of options outstanding and the weighted average exercise price:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
Options outstanding at December 31, 2022		4,171,311	$	5.56		7.89	$	10,839,589
Granted		1,124,600		11.61		9.77		–
Exercised		–		–
Forfeited and expired		–		–
Options outstanding at March 31, 2023		5,295,911	$	6.85		8.09	$	7,054,179
Vested and expected to vest at March 31, 2023		5,295,911	$	6.85		8.09	$	7,054,179
Exercisable at March 31, 2023		2,169,348	$	6.00		6.86	$	3,615,087

At March 31, 2023, there was approximately $22,311,311 of unamortized stock option compensation expense, which is expected to be recognized over a remaining average vesting period of 2.92 years.