13D Filing: Lone Star Value Management and Superior Drilling Products Inc. (SDPI)

Item 5.

Interest in Securities of the Issuer.

Items
5(a)-(c) are hereby amended and restated to read as follows:

The aggregate percentage
of Shares reported owned by each person named herein is based upon 24,197,148 Shares outstanding as of May 11, 2017, which is the
total number of Shares reported outstanding in the Issuer’s Form 10Q filed with the Securities and Exchange Commission on
May 15, 2017.

A.

Lone Star Value Investors

(a)

As of the close of business on May 18, 2017, Lone Star Value Investors beneficially owned 1,997,458 Shares.

Percentage: Approximately 8.3%

(b)

1. Sole power to vote or direct vote: 1,997,458 2. Shared power to vote or direct vote: 0 3. Sole power to dispose or direct the disposition: 1,997,458 4. Shared power to dispose or direct the disposition: 0

(c)

The transactions in the Shares by Lone Star Value Investors during the past 60 days are set forth in Schedule A and are incorporated herein by reference.

B.

Lone Star Value Co-Invest I

(a)

As of the close of business on May 18, 2017, Lone Star Value Co-Invest I did not beneficially own any Shares.

Percentage: 0%

(b)

1. Sole power to vote or direct vote: 0 2. Shared power to vote or direct vote: 0 3. Sole power to dispose or direct the disposition: 0 4. Shared power to dispose or direct the disposition: 0

(c)

The transactions in the Shares by Lone Star Value Co-Invest I during the past 60 days are set forth in Schedule A and are incorporated herein by reference.

C.

Lone Star Value GP

(a)

Lone Star Value GP, as the general partner of Lone Star Value Investors and Lone Star Value Co-Invest I, may be deemed the beneficial owner of the 1,997,458 Shares owned by Lone Star Value Investors.

Percentage: Approximately 8.3%

(b)

1. Sole power to vote or direct vote: 1,997,458 2. Shared power to vote or direct vote: 0 3. Sole power to dispose or direct the disposition: 1,997,458 4. Shared power to dispose or direct the disposition: 0