STEFANSKY DAVID

SEC source: 0001493152-23-029650 · ownership.xml · derivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 15,000 shares

Expires 2033-08-17

F1 · derivative.exercise_date: Represents stock options granted pursuant to the Issuer's 2019 Long-Term Incentive Plan, as amended, for past services as a member of the Issuer's Board of Directors. The total number of shares vested as of August 17, 2023.

SEC source: 0001493152-23-020659 · ownership.xml · nonDerivative · entry 2

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,091

F2 · price: The Reporting Person purchased all 1,000 shares of common stock in the open market at a price of $2.22 per share.

SEC source: 0001493152-23-020659 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,091

F1 · price: The Reporting Person purchased all 2,000 shares of common stock in the open market at a price of $2.50 per share.

SEC source: 0001493152-23-019751 · ownership.xml · nonDerivative · entry 2

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,091

F2 · price: The Reporting Person purchased all 2,000 shares of common stock in the open market at a price of $2.42 per share.

SEC source: 0001493152-23-019751 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,091

F1 · price: Represents the weighted average of open market purchase transactions ranging from $2.40 to $2.65 per share. The Reporting Person undertakes to provide full information regarding the number of shares purchased at each separate price paid if requested by the Securities and Exchange Commission Staff, the Issuer or a security holder of the Issuer.

SEC source: 0001493152-22-035878 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,091

F1 · price: The Reporting Person purchased all 5,000 shares of common stock in the open market at a price of $1.59 per share.

SEC source: 0001493152-22-035308 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,091

F1 · price: The $1.4433 represents a weighted average price. The Reporting Person purchased 5,000 shares of common stock in the open market at a price of $1.44 per share and purchased 2,500 shares of common stock in the open market at a price of $1.45 per share.

SEC source: 0001493152-22-024446 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,591

F1 · price: The $1.6560 represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.6400 to $1.6800. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote 1 to this Form 4.

SEC source: 0001493152-22-024116 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,591

SEC source: 0001493152-22-023279 · ownership.xml · nonDerivative · entry 2

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,591

F2 · price: The $1.7920 represents a weighted average price. The Reporting Person purchased 500 shares of common stock at a price of $1.800 per share and 2,000 shares of common stock at a price of $1.7900 per share.

SEC source: 0001493152-22-023279 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,091

F1 · price: The $1.9033 represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.8800 to $1.9100. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote 1 to this Form 4.

SEC source: 0001493152-22-017807 · ownership.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,219

F1 · price: The $1.5962 represents a weighted average price. The Reporting Person purchased 3,000 shares of common stock at a price of $1.60 per share, 100 shares of common stock at a price of $1.59 per share and 28 shares of common stock at a price of $1.55 per share.

F1 · balance_after: The $1.5962 represents a weighted average price. The Reporting Person purchased 3,000 shares of common stock at a price of $1.60 per share, 100 shares of common stock at a price of $1.59 per share and 28 shares of common stock at a price of $1.55 per share.

SEC source: 0001104659-22-000433 · tm221361-2_4seq1.xml · derivative · entry 3

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,091

Underlying: Common Stock · 9,091 shares

Expires 2026-12-26

F1 · kind: The Reporting Person acquired the shares of common stock and warrant to purchase common stock reported on this Form 4 in connection with the Issuer's underwritten public offering which closed on December 27, 2021.

SEC source: 0001104659-22-000433 · tm221361-2_4seq1.xml · nonDerivative · entry 1

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,091

F1 · acquired: The Reporting Person acquired the shares of common stock and warrant to purchase common stock reported on this Form 4 in connection with the Issuer's underwritten public offering which closed on December 27, 2021.

SEC source: 0001104659-20-071294 · tm2022182d2_4.xml · derivative · entry 2

STEFANSKY DAVID · CIK 0001320581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,857,141

Underlying: Common Stock · 2,857,141 shares

Expires 2030-02-17

F2 · derivative.exercise_price: On February 17, 2020 and consideration for the Reporting Person's service on the Issuer's Board of Directors (the "Board"), the Issuer granted to the Reporting Person two annual awards of stock options equal to $40,000 of the Issuer's common stock, granted under the Issuer 2019 Long-Term Incentive Plan (the "Incentive Plan"), with (i) the first grant being the right to purchase up to 2,857,141 shares of the Issuer's common stock at a per share exercise price of $0.014 with one-half of such option vesting on March 31, 2020 and the remaining one-half vesting in equal installments on June 30, 2020 and September 30, 2020, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason and

F3 · derivative.exercise_price: (ii) the second grant being the right to purchase up to a number of shares of the Issuer's common stock equal to $40,000 divided by the Fair Market Value (as defined in the Incentive Plan) of the Issuer's common stock as of October 10, 2020 at a per share exercise price equal to Fair Market Value of the Issuer's common stock as of October 10, 2020 with one-fourth of such option vesting on each of December 31, 2020, March 31, 2021, June 30, 2021 and September 30, 2021, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason. This award was reported in the Issuer's Form 10-Q for the period ended March 31, 2020.

F1 · kind: Represents shares of common stock held by Bezalel Partners LLC ("Bezalel"). The Reporting Person is the managing member of Bezalel and has the sole power to vote and direct the voting of, and to dispose and to direct the disposition of, the shares of common stock beneficially owned by Bezalel.

F2 · shares: On February 17, 2020 and consideration for the Reporting Person's service on the Issuer's Board of Directors (the "Board"), the Issuer granted to the Reporting Person two annual awards of stock options equal to $40,000 of the Issuer's common stock, granted under the Issuer 2019 Long-Term Incentive Plan (the "Incentive Plan"), with (i) the first grant being the right to purchase up to 2,857,141 shares of the Issuer's common stock at a per share exercise price of $0.014 with one-half of such option vesting on March 31, 2020 and the remaining one-half vesting in equal installments on June 30, 2020 and September 30, 2020, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason and

F3 · shares: (ii) the second grant being the right to purchase up to a number of shares of the Issuer's common stock equal to $40,000 divided by the Fair Market Value (as defined in the Incentive Plan) of the Issuer's common stock as of October 10, 2020 at a per share exercise price equal to Fair Market Value of the Issuer's common stock as of October 10, 2020 with one-fourth of such option vesting on each of December 31, 2020, March 31, 2021, June 30, 2021 and September 30, 2021, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason. This award was reported in the Issuer's Form 10-Q for the period ended March 31, 2020.

F2 · price: On February 17, 2020 and consideration for the Reporting Person's service on the Issuer's Board of Directors (the "Board"), the Issuer granted to the Reporting Person two annual awards of stock options equal to $40,000 of the Issuer's common stock, granted under the Issuer 2019 Long-Term Incentive Plan (the "Incentive Plan"), with (i) the first grant being the right to purchase up to 2,857,141 shares of the Issuer's common stock at a per share exercise price of $0.014 with one-half of such option vesting on March 31, 2020 and the remaining one-half vesting in equal installments on June 30, 2020 and September 30, 2020, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason and

F3 · price: (ii) the second grant being the right to purchase up to a number of shares of the Issuer's common stock equal to $40,000 divided by the Fair Market Value (as defined in the Incentive Plan) of the Issuer's common stock as of October 10, 2020 at a per share exercise price equal to Fair Market Value of the Issuer's common stock as of October 10, 2020 with one-fourth of such option vesting on each of December 31, 2020, March 31, 2021, June 30, 2021 and September 30, 2021, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason. This award was reported in the Issuer's Form 10-Q for the period ended March 31, 2020.

F2 · derivative.exercise_date: On February 17, 2020 and consideration for the Reporting Person's service on the Issuer's Board of Directors (the "Board"), the Issuer granted to the Reporting Person two annual awards of stock options equal to $40,000 of the Issuer's common stock, granted under the Issuer 2019 Long-Term Incentive Plan (the "Incentive Plan"), with (i) the first grant being the right to purchase up to 2,857,141 shares of the Issuer's common stock at a per share exercise price of $0.014 with one-half of such option vesting on March 31, 2020 and the remaining one-half vesting in equal installments on June 30, 2020 and September 30, 2020, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason and

F3 · derivative.exercise_date: (ii) the second grant being the right to purchase up to a number of shares of the Issuer's common stock equal to $40,000 divided by the Fair Market Value (as defined in the Incentive Plan) of the Issuer's common stock as of October 10, 2020 at a per share exercise price equal to Fair Market Value of the Issuer's common stock as of October 10, 2020 with one-fourth of such option vesting on each of December 31, 2020, March 31, 2021, June 30, 2021 and September 30, 2021, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason. This award was reported in the Issuer's Form 10-Q for the period ended March 31, 2020.

F2 · derivative.underlying_shares: On February 17, 2020 and consideration for the Reporting Person's service on the Issuer's Board of Directors (the "Board"), the Issuer granted to the Reporting Person two annual awards of stock options equal to $40,000 of the Issuer's common stock, granted under the Issuer 2019 Long-Term Incentive Plan (the "Incentive Plan"), with (i) the first grant being the right to purchase up to 2,857,141 shares of the Issuer's common stock at a per share exercise price of $0.014 with one-half of such option vesting on March 31, 2020 and the remaining one-half vesting in equal installments on June 30, 2020 and September 30, 2020, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason and

F3 · derivative.underlying_shares: (ii) the second grant being the right to purchase up to a number of shares of the Issuer's common stock equal to $40,000 divided by the Fair Market Value (as defined in the Incentive Plan) of the Issuer's common stock as of October 10, 2020 at a per share exercise price equal to Fair Market Value of the Issuer's common stock as of October 10, 2020 with one-fourth of such option vesting on each of December 31, 2020, March 31, 2021, June 30, 2021 and September 30, 2021, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason. This award was reported in the Issuer's Form 10-Q for the period ended March 31, 2020.

F2 · balance_after: On February 17, 2020 and consideration for the Reporting Person's service on the Issuer's Board of Directors (the "Board"), the Issuer granted to the Reporting Person two annual awards of stock options equal to $40,000 of the Issuer's common stock, granted under the Issuer 2019 Long-Term Incentive Plan (the "Incentive Plan"), with (i) the first grant being the right to purchase up to 2,857,141 shares of the Issuer's common stock at a per share exercise price of $0.014 with one-half of such option vesting on March 31, 2020 and the remaining one-half vesting in equal installments on June 30, 2020 and September 30, 2020, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason and

F3 · balance_after: (ii) the second grant being the right to purchase up to a number of shares of the Issuer's common stock equal to $40,000 divided by the Fair Market Value (as defined in the Incentive Plan) of the Issuer's common stock as of October 10, 2020 at a per share exercise price equal to Fair Market Value of the Issuer's common stock as of October 10, 2020 with one-fourth of such option vesting on each of December 31, 2020, March 31, 2021, June 30, 2021 and September 30, 2021, respectively, and with an acceleration of any unvested options upon the departure of the Reporting Person from the Board for any reason. This award was reported in the Issuer's Form 10-Q for the period ended March 31, 2020.