SIGMA LABS, INC. | Business Contracts

Amendment, effective as of April 1, 2022, to Employment letter agreement, effective as of September 20, 2021, between Sigma Labs, Inc. and Jacob Brunsberg (Filed With SEC on August 5, 2022)

Description of Securities (Filed With SEC on March 24, 2022)

Sigma Labs, Inc. 2021 Employee Stock Purchase Plan (Filed With SEC on July 16, 2021)

Placement Agency Agreement dated as of April 2, 2020 between the Company and Dawson James (Filed With SEC on April 3, 2020)

Amendment, dated February 16, 2022, to Amended and Restated Employment Agreement, dated June 10, 2021, between Sigma Labs, Inc. and Mark K. Ruport (Filed With SEC on March 24, 2022)

Amendment, dated February 16, 2022, to Employment letter agreement, effective as of September 20, 2021, between Sigma Labs, Inc. and Jacob Brunsberg (Filed With SEC on March 24, 2022)

Employment letter agreement, effective as of September 20, 2021, between Sigma Labs, Inc. and Jacob Brunsberg (Filed With SEC on October 21, 2021)

Sigma Labs, Inc. 2013 Equity Incentive Plan, as Amended (Filed With SEC on July 16, 2021)

Amended and Restated Employment Agreement, dated June 10, 2021, between Sigma Labs, Inc. and Mark K. Ruport (Filed With SEC on June 15, 2021)

Form of Placement Agent Warrant (Filed With SEC on March 30, 2021)

Form of Securities Purchase Agreement (Filed With SEC on March 30, 2021)

Form of Warrant (Filed With SEC on March 30, 2021)

Description of Securities (Filed With SEC on March 24, 2021)

Form of Waiver (Filed With SEC on January 12, 2021)

Form of Warrant (Filed With SEC on January 12, 2021)

Form of Underwriter Warrant (Filed With SEC on January 12, 2021)

Underwriting Agreement, dated January 8, 2021, by and among Sigma Labs, Inc. and H.C. Wainwright & Co., LLC, as the representative for the underwriters named therein (Filed With SEC on January 12, 2021)

Form of Stock Appreciation Rights Agreement (Non-employee Directors; 2020 Stock Appreciation Rights Plan) (Filed With SEC on June 29, 2020)

Form of Stock Appreciation Rights Agreement (Employees; 2020 Stock Appreciation Rights Plan) (Filed With SEC on June 29, 2020)

Sigma Labs, Inc. 2020 Stock Appreciation Rights Plan (Filed With SEC on June 29, 2020)

Sigma Labs, Inc. 2013 Equity Incentive Plan, as Amended (Filed With SEC on June 19, 2020)

Consulting Agreement, dated as of May 1, 2020, between Sigma Labs, Inc. and John Rice (Filed With SEC on May 4, 2020)

Form of Placement Warrant (Filed With SEC on April 7, 2020)

Form of Pre-Funded Warrant (Filed With SEC on April 3, 2020)

Form of Private Warrant (Filed With SEC on April 3, 2020)

Form of Securities Purchase Agreement dated as of April 2, 2020 by and among Sigma Labs, Inc. and the Investors (Filed With SEC on April 3, 2020)

Employment letter agreement, effective as of December 3, 2020, between the Company and Mark Ruport (Filed With SEC on March 24, 2020)

Description of Securities (Filed With SEC on March 24, 2020)

Form of Limited Waiver (Filed With SEC on February 4, 2020)

Form of Class A Warrant (Filed With SEC on January 30, 2020)

Certificate of Designations (Series E Convertible Preferred Stock) (Filed With SEC on January 30, 2020)

Form of Preferred Warrant (Filed With SEC on January 30, 2020)

Form of Institutional Common Warrant (Filed With SEC on January 30, 2020)

Certificate of Designations (Series D Convertible Preferred Stock) (Filed With SEC on January 30, 2020)

Private Placement Agreement (Filed With SEC on January 30, 2020)

Registration Rights Agreement (Filed With SEC on January 27, 2020)

Form of Institutional Common Warrant (Filed With SEC on January 27, 2020)

Securities Purchase Agreement (Institutional Investors) (Filed With SEC on January 27, 2020)

Form of Certificate of Designations (Series D Convertible Preferred Stock) (Filed With SEC on January 27, 2020)

Form of Preferred Warrant (Filed With SEC on January 27, 2020)

Securities Purchase Agreement (Other Investors) (Filed With SEC on January 27, 2020)

Form of Certificate of Designations (Series E Convertible Preferred Stock) (Filed With SEC on January 27, 2020)

Form of Other Investors Common Warrant (Filed With SEC on January 27, 2020)

Employment letter agreement, effective as of July 1, 2019, between the Company and Frank D. Orzechowski (Filed With SEC on August 14, 2019)

Underwriting Agreement, dated July 30, 2019, by and among Sigma Labs, Inc. and Aegis Capital Corp. acting as the representative of the several underwriters named on Schedule I... (Filed With SEC on August 1, 2019)

Securities Purchase Agreement, dated as of May 7, 2019, between Sigma Labs, Inc. and Purchaser (Filed With SEC on May 8, 2019)

Form of Placement Agent Warrants (Filed With SEC on May 8, 2019)

Form of Common Stock Purchase Warrant (Filed With SEC on May 8, 2019)

Form of Nonqualified Stock Option Agreement for the 2013 Equity Incentive Plan (Filed With SEC on April 1, 2019)

Form of Restricted Stock Agreement for the 2013 Equity Incentive Plan (Filed With SEC on April 1, 2019)

Form of Common Stock Purchase Warrant (Filed With SEC on March 14, 2019)

Form of Unit Purchase Option (Filed With SEC on March 14, 2019)

Placement Agency Agreement, dated as of March 13, 2019, between Sigma Labs, Inc. and Dawson James Securities, Inc (Filed With SEC on March 14, 2019)

SIGMA LABS, INC. (53)