X0202 SCHEDULE 13G 0002152805 XXXXXXXX LIVE Class A Common Stock, $0.0001 par value per share 08/27/2026 0001740604 BITGO HOLDINGS, INC. 091947101 101 S. Reid Street, Suite 307, PMB# 9793 Sioux Falls SD 57108 Rule 13d-1(c) NYDIG IHC LLC DE 0.00 5933577.00 0.00 5933577.00 5933577.00 N 5.46 OO For Box 11, 5.46% was calculated based on 108,690,240 shares of Class A Common Stock outstanding as of August 7, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the period ended June 30, 2026 filed with the Securities and Exchange Commission on August 12, 2026. New York Digital Investment Group LLC DE 0.00 5933577.00 0.00 5933577.00 5933577.00 N 5.46 OO For Box 11, 5.46% was calculated based on 108,690,240 shares of Class A Common Stock outstanding as of August 7, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the period ended June 30, 2026 filed with the Securities and Exchange Commission on August 12, 2026. Stone Ridge Holdings Group LP DE 0.00 5933577.00 0.00 5933577.00 5933577.00 N 5.46 PN For Box 11, 5.46% was calculated based on 108,690,240 shares of Class A Common Stock outstanding as of August 7, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the period ended June 30, 2026 filed with the Securities and Exchange Commission on August 12, 2026. Stone Ridge Holdings Group (GP) LLC DE 0.00 5933577.00 0.00 5933577.00 5933577.00 N 5.46 OO For Box 11, 5.46% was calculated based on 108,690,240 shares of Class A Common Stock outstanding as of August 7, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the period ended June 30, 2026 filed with the Securities and Exchange Commission on August 12, 2026. Ross Stevens X1 0.00 5933577.00 0.00 5933577.00 5933577.00 N 5.46 IN For Box 11, 5.46% was calculated based on 108,690,240 shares of Class A Common Stock outstanding as of August 7, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the period ended June 30, 2026 filed with the Securities and Exchange Commission on August 12, 2026. BITGO HOLDINGS, INC. 101 S. Reid Street, Suite 307, PMB# 9793, Sioux Falls, SD, 57108 NYDIG IHC LLC New York Digital Investment Group LLC Stone Ridge Holdings Group LP Stone Ridge Holdings Group (GP) LLC Ross Stevens The shares reported herein are directly held by NYDIG IHC LLC. NYDIG IHC LLC is controlled by New York Digital Investment Group LLC. New York Digital Investment Group LLC is controlled by Stone Ridge Holdings Group LP. Stone Ridge Holdings Group LP is controlled by Stone Ridge Holdings Group (GP) LLC. Stone Ridge Holdings Group (GP) LLC is controlled by Ross Stevens. The Joint Filing Agreement among the Reporting Persons is filed herewith as Exhibit 1. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein except to the extent of its or his pecuniary interest therein. For NYDIG IHC LLC, New York Digital Investment Group LLC, Stone Ridge Holdings Group LP, Stone Ridge Holdings Group (GP) LLC and Ross Stevens: One Vanderbilt Avenue, Floor 65, New York, NY 10017 NYDIG IHC LLC: Delaware New York Digital Investment Group LLC: Delaware Stone Ridge Holdings Group LP: Delaware Stone Ridge Holdings Group (GP) LLC: Delaware Ross Stevens: United States Y 5,933,577 5.46 0 5,933,577 0 5,933,577 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Exhibit 1 - Joint Filing Agreement NYDIG IHC LLC /s/ Reuben Grinberg 09/02/2026 New York Digital Investment Group LLC /s/ Reuben Grinberg 09/02/2026 Stone Ridge Holdings Group LP /s/ Ross Stevens 09/02/2026 Stone Ridge Holdings Group (GP) LLC /s/ Ross Stevens 09/02/2026 Ross Stevens /s/ Ross Stevens 09/02/2026