X0206 3 2020-02-10 0 0001720821 PAE Inc PAE 0001803136 PE Shay Holdings, LLC C/O PLATINUM EQUITY ADVISORS, LLC, 360 NORTH CRESCENT DRIVE, BEVERLY HILLS CA 90210 0 0 1 0 0001676358 Platinum Equity Partners III, LLC C/O PLATINUM EQUITY ADVISORS, LLC, 360 NORTH CRESCENT DRIVE, BEVERLY HILLS CA 90210 0 0 1 0 0001803129 Platinum Equity Capital Shay Partners I, L.P. C/O PLATINUM EQUITY ADVISORS, LLC, 360 NORTH CRESCENT DRIVE, BEVERLY HILLS CA 90210 0 0 1 0 0001803358 Platinum Equity Capital Shay Partners II, L.P. C/O PLATINUM EQUITY ADVISORS, LLC, 360 NORTH CRESCENT DRIVE, BEVERLY HILLS CA 90210 0 0 1 0 0001543654 Platinum Equity Capital Partners-A III, L.P. C/O PLATINUM EQUITY ADVISORS, LLC, 360 NORTH CRESCENT DRIVE, BEVERLY HILLS CA 90210 0 0 1 0 0001803111 Platinum Equity Capital Partners-B III, L.P. C/O PLATINUM EQUITY ADVISORS, LLC, 360 NORTH CRESCENT DRIVE, BEVERLY HILLS CA 90210 0 0 1 0 0001574359 Platinum Equity Capital Partners-C III, L.P. C/O PLATINUM EQUITY ADVISORS, LLC, 360 NORTH CRESCENT DRIVE, BEVERLY HILLS CA 90210 0 0 1 0 Class A Common Stock 22466228 I See footnotes Warrants 11.50 2020-03-11 2025-02-10 Class A Common Stock 958170 I See footnotes Consists of 20,919,578 shares of Class A Common Stock held by PE Shay Holdings, LLC and 1,546,650 shares of Class A Common Stock held by Platinum Equity, LLC. Platinum Equity Capital Shay Partners I, L.P., Platinum Equity Capital Shay Partners II, L.P., Platinum Equity Capital Partners-A III, L.P., Platinum Equity Capital Partners-B III, L.P. and Platinum Equity Capital Partners-C III, L.P. (collectively, the "Platinum Funds") collectively own a majority of the equity interests of PE Shay Holdings, LLC. As a result, the Platinum Funds may be deemed to beneficially own the securities held by PE Shay Holdings, LLC. Platinum Equity, LLC is the sole member of Platinum Equity Investment Holdings III Manager, LLC, which is the sole manager of Platinum Equity Investment Holdings III, LLC, which is the senior managing member of Platinum Equity Partners III, LLC. Platinum Equity Partners III, LLC is the general partner of each of the Platinum Funds. Therefore, each of the foregoing entities may be deemed to share beneficial ownership of the securities beneficially owned by the Platinum Funds. Mr. Gores is the Chairman and Chief Executive Officer of Platinum Equity, LLC. As a result, Mr. Gores may be deemed to share voting and investment power with respect to all shares of Class A Common Stock of the Issuer beneficially owned by Platinum Equity, LLC. Mr. Gores disclaims any beneficial ownership with respect to such securities except to the extent of his pecuniary interest therein. Represents securities held by Platinum Equity, LLC. Due to the limitations of the electronic filing system Platinum Equity, LLC, Platinum Equity Investment Holdings III Manager, LLC, Platinum Equity Investment Holdings III, LLC and Tom Gores are filing a separate Form 3. Platinum Equity Partners III, LLC By: Platinum Equity Investment Holdings III, LLC, its senior managing member By: /s/ Justin Maroldi, Assistant Secretary 2020-02-20 Platinum Equity Capital Shay Partners I, L.P. By: Platinum Equity Partners III, LLC, its general partner By: Platinum Equity Investment Holdings III, LLC, its senior managing member By: /s/ Justin Maroldi, Assistant Secretary 2020-02-20 Platinum Equity Capital Shay Partners II, L.P. By: Platinum Equity Partners III, LLC, its general partner By: Platinum Equity Investment Holdings III, LLC, its senior managing member By: /s/ Justin Maroldi, Assistant Secretary 2020-02-20 Platinum Equity Capital Partners-A III, L.P. By: Platinum Equity Partners III, LLC, its general partner By: Platinum Equity Investment Holdings III, LLC, its senior managing member By: /s/ Justin Maroldi, Assistant Secretary 2020-02-20 Platinum Equity Capital Partners-B III, L.P. By: Platinum Equity Partners III, LLC, its general partner By: Platinum Equity Investment Holdings III, LLC, its senior managing member By: /s/ Justin Maroldi, Assistant Secretary 2020-02-20 Platinum Equity Capital Partners-C III, L.P. By: Platinum Equity Partners III, LLC, its general partner By: Platinum Equity Investment Holdings III, LLC, its senior managing member By: /s/ Justin Maroldi, Assistant Secretary 2020-02-20 PE Shay Holdings, LLC By: /s/ Justin Maroldi, Assistant Secretary 2020-02-20