Reverse Stock Split

3 Months Ended

Mar. 31, 2021

Stockholders’ Equity

Preferred stock and convertible preferred stock consist of the following:


	March 31, 2021		December 31, 2020
Preferred stock, $0.001 par value; 5,000,000 shares authorized at March 31, 2021 and December 31, 2020; no shares issued and outstanding at March 31, 2021 and December 31, 2020	$	—	$	—
Series B convertible preferred stock, $0.001 par value; 147,000 shares designated at March 31, 2021 and December 31, 2020; 200 shares issued and outstanding at March 31, 2021 and December 31, 2020	$	1	$	1
Series D convertible preferred stock, $0.001 par value; 21,300 shares designated at March 31, 2021 and December 31, 2020; no shares issued and outstanding at March 31, 2021 and December 31, 2020	$	—	$	—
Series E convertible preferred stock, $0.001 par value; 7,000 shares designated at March 31, 2021 and December 31, 2020; no shares issued and outstanding at March 31, 2021 and December 31, 2020	$	—	$	—
Series F convertible preferred stock, $0.001 par value; 10,621 shares designated at March 31, 2021 and December 31, 2020; no shares issued and outstanding at March 31, 2021 and December 31, 2020	$	—	$	—

2021 equity activity

In January 2021, the Company issued 2,408 shares of fully vested common stock with a value of $4,197 pursuant to the Company's 2010 Employee Stock Purchase Plan.

2020 equity activity

In February 2020, the Company entered into an At Market Issuance Sales Agreement (the "Agreement") with respect to an at-the-market offering program ("ATM program"), under which the Company may offer and sell, from time to time at its sole discretion, shares of its common stock, par value $0.0001 per share (the "Common Stock"), subject to the regulatory limitations imposed by the Securities and Exchange Commission (the "Placement Shares"). The issuance and sale of the Placement Shares by the Company under the Agreement will be made pursuant to the Company's effective "shelf" registration statement on Form S-3. During the three months ended March 31, 2020, 256,078 shares of common stock were issued pursuant to the Agreement for proceeds of $453,457. During 2020, 2,348,619 shares of common stock were issued pursuant to the Agreement for net proceeds of $4,143,431.

In March 2020, the Company issued 31,000 shares of fully vested common stock with a value of $43,751 pursuant to a Separation Agreement between the Company and an employee. The shares issued reflected the $1.41 closing price of the Company's common stock as reported on the Nasdaq Capital Market on March 11, 2020.