ASTS

SEC source: 0001493152-26-045389 · ownership.xml · nonDerivative · entry 1

Thorsen Wayne · CIK 0001960786 · EVP & Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first, second, and third anniversary of September 28, 2026, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-043182 · ownership.xml · nonDerivative · entry 1

Gupta Shanti B. · CIK 0001884187 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 462,980

F1 · price: Represents the weighted average selling price. These shares were sold in multiple transactions at prices ranging from $58.87 per share to $58.93 per share, inclusive. The reporting person undertakes to provide to 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001493152-26-043183 · ownership.xml · nonDerivative · entry 1

Yao Huiwen · CIK 0002027976 · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,750

F1 · shares: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026.

F2 · price: Represents the weighted average selling price. These shares were sold in multiple transactions at prices ranging from $57.52 per share to $60.31 per share, inclusive. The reporting person undertakes to provide to 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001104659-26-104326 · tm2624604-1_4seq1.xml · nonDerivative · entry 3

Cisneros Adriana · CIK 0001749229 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Child

Disclosed balance after: 797,023

F3 · ownership.nature: Reflects shares held directly by adult child of the reporting person in individual account in the child's name. The child is a college student whose permanent address is the reporting person's household.

SEC source: 0001104659-26-104326 · tm2624604-1_4seq1.xml · nonDerivative · entry 2

Cisneros Adriana · CIK 0001749229 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Entity

Disclosed balance after: 796,353

F2 · ownership.nature: Reflects shares held by 1979 Edendale Investments Ltd., an entity held by The Adriana Cisneros 2014 Portfolio Trust, of which the reporting person is the beneficiary and for which the reporting person has the ability to remove and replace the trustee in certain limited circumstances.

SEC source: 0001104659-26-104326 · tm2624604-1_4seq1.xml · nonDerivative · entry 1

Cisneros Adriana · CIK 0001749229 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse

Disclosed balance after: 787,585

F1 · ownership.nature: Reflects shares held directly by the reporting person's spouse, Nicholas Griffin.

SEC source: 0001493152-26-039321 · ownership.xml · derivative · entry 2

Yao Huiwen · CIK 0002027976 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 219,912

Underlying: Class A Common Stock · 40,000 shares

Expires 2029-04-17

F2 · derivative.exercise_date: Six months after vesting, each AST LLC Incentive Equity Option is exercisable for an AST LLC Incentive Equity Unit, each of which is then exchangeable for an AST LLC Common Unit that is redeemable for one share of Class A Common Stock. The AST LLC Incentive Equity Options expire no later than 10 years from the date of grant.

F2 · derivative.expiration_date: Six months after vesting, each AST LLC Incentive Equity Option is exercisable for an AST LLC Incentive Equity Unit, each of which is then exchangeable for an AST LLC Common Unit that is redeemable for one share of Class A Common Stock. The AST LLC Incentive Equity Options expire no later than 10 years from the date of grant.

F2 · ownership.nature: Six months after vesting, each AST LLC Incentive Equity Option is exercisable for an AST LLC Incentive Equity Unit, each of which is then exchangeable for an AST LLC Common Unit that is redeemable for one share of Class A Common Stock. The AST LLC Incentive Equity Options expire no later than 10 years from the date of grant.

SEC source: 0001493152-26-039321 · ownership.xml · nonDerivative · entry 1

Yao Huiwen · CIK 0002027976 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,750

F1 · shares: Represents shares of Class A Common Stock obtained from exercise of AST LLC Incentive Equity Options.

SEC source: 0001493152-26-039311 · ownership.xml · nonDerivative · entry 1

Wisniewski Scott · CIK 0002028702 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 782,443

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first, second, and third anniversary of May 30, 2026, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-039317 · ownership.xml · nonDerivative · entry 1

Bernal Maya · CIK 0002027960 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,449

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on August 15, 2027, August 15, 2028, and August 15, 2029, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-039316 · ownership.xml · nonDerivative · entry 1

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 556,484

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first, second, and third anniversary of May 30, 2026, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-039319 · ownership.xml · nonDerivative · entry 2

Avellan Abel Antonio · CIK 0001680225 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,692,209

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first, second, and third anniversary of May 30, 2026, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-039315 · ownership.xml · nonDerivative · entry 1

Gupta Shanti B. · CIK 0001884187 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 474,980

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first, second, and third anniversary of May 30, 2026, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-039310 · ownership.xml · nonDerivative · entry 1

Turco Christopher Edward · CIK 0002146452 · EVP and Chief of Staff

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,500

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first, second, and third anniversary of August 15, 2026, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-039925 · ownership.xml · nonDerivative · entry 1

Turco Christopher Edward · CIK 0002146452 · EVP and Chief of Staff

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,500

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first, second, and third anniversary of July 14, 2026, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

F2 · shares: This amendment is being filed to correct the vesting dates referenced in the original filing. The award vests in equal installments on each anniversary of July 14, 2026, rather than each anniversary of August 15, 2026, as originally reported.

SEC source: 0001493152-26-039053 · ownership.xml · nonDerivative · entry 2

Wisniewski Scott · CIK 0002028702 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 707,443

F2 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of performance-based stock unit awards ("PSUs") representing 31,250 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 18,953 shares.

SEC source: 0001493152-26-039053 · ownership.xml · nonDerivative · entry 1

Wisniewski Scott · CIK 0002028702 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 719,740

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 25,000 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 15,162 shares.

SEC source: 0001493152-26-039054 · ownership.xml · nonDerivative · entry 1

Bernal Maya · CIK 0002027960 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,449

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 7,416 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 4,497 shares.

SEC source: 0001493152-26-039056 · ownership.xml · nonDerivative · entry 2

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 481,484

F2 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of performance-based stock unit awards ("PSUs") representing 31,250 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 18,953 shares.

SEC source: 0001493152-26-039056 · ownership.xml · nonDerivative · entry 1

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 493,781

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 25,000 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 15,162 shares.

SEC source: 0001493152-26-039055 · ownership.xml · nonDerivative · entry 1

Gupta Shanti B. · CIK 0001884187 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 399,980

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 25,000 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 12,233 shares.

SEC source: 0001493152-26-029685 · ownership.xml · derivative · entry 1

Avellan Abel Antonio · CIK 0001680225 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,500,000

Underlying: Class A Common Stock · 2,500,000 shares

Expires not disclosed

F1 · derivative.exercise_price: On June 22, 2026, AA Gables 2, LLC ("AA Gables 2") entered into a master confirmation, supplemental confirmation and pricing notice under Rule 144 under the Securities Act of 1933, as amended, in respect of a variable prepaid forward transaction (the "Forward Contract") with an unaffiliated dealer covering up to a maximum of 2,500,000 shares of the Issuer's Class A Common Stock (the "Subject Shares"). The Forward Contract obligates AA Gables 2 to deliver to the dealer up to the Subject Shares (or at AA Gables 2's election, an equivalent amount of cash) on specified dates in March of 2028. The transaction is divided into four components, each comprising up to 625,000 shares of Class A Common Stock (the "Component Shares").

F2 · derivative.exercise_price: (Continued from Footnote 1) The number of Component Shares (or the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer on the related settlement date will be based on the volume-weighted average price per share of Class A Common Stock on the related valuation date (the "Settlement Price").

F3 · derivative.exercise_price: The number of shares of Class A Common Stock (or, in each case, the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer at settlement will be determined as follows: (A) if the Settlement Price is less than or equal to $59.58 (the "Floor Price"), AA Gables 2 will deliver the Component Shares; (B) if the Settlement Price is less than or equal to $111.72 (the "Cap Price"), but greater than the Floor Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is the Settlement Price; and

F4 · derivative.exercise_price: (Continued from Footnote 3) (C) if the Settlement Price is greater than the Cap Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by (ii) a fraction, the numerator of which is the sum of (x) the Floor Price and (y) the Settlement Price minus the Cap Price, and the denominator of which is the Settlement Price.

F5 · derivative.exercise_price: In exchange for assuming these obligations, AA Gables 2 received an upfront aggregate cash payment of approximately $146.7 million. AA Gables 2 has pledged 2,500,000 common units of AST & Science, LLC (the "Pledged Securities") to secure its obligations under the Forward Contract. AA Gables 2 will retain voting rights in the Pledged Securities during the term of the Forward Contract.

F1 · price: On June 22, 2026, AA Gables 2, LLC ("AA Gables 2") entered into a master confirmation, supplemental confirmation and pricing notice under Rule 144 under the Securities Act of 1933, as amended, in respect of a variable prepaid forward transaction (the "Forward Contract") with an unaffiliated dealer covering up to a maximum of 2,500,000 shares of the Issuer's Class A Common Stock (the "Subject Shares"). The Forward Contract obligates AA Gables 2 to deliver to the dealer up to the Subject Shares (or at AA Gables 2's election, an equivalent amount of cash) on specified dates in March of 2028. The transaction is divided into four components, each comprising up to 625,000 shares of Class A Common Stock (the "Component Shares").

F2 · price: (Continued from Footnote 1) The number of Component Shares (or the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer on the related settlement date will be based on the volume-weighted average price per share of Class A Common Stock on the related valuation date (the "Settlement Price").

F3 · price: The number of shares of Class A Common Stock (or, in each case, the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer at settlement will be determined as follows: (A) if the Settlement Price is less than or equal to $59.58 (the "Floor Price"), AA Gables 2 will deliver the Component Shares; (B) if the Settlement Price is less than or equal to $111.72 (the "Cap Price"), but greater than the Floor Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is the Settlement Price; and

F4 · price: (Continued from Footnote 3) (C) if the Settlement Price is greater than the Cap Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by (ii) a fraction, the numerator of which is the sum of (x) the Floor Price and (y) the Settlement Price minus the Cap Price, and the denominator of which is the Settlement Price.

F5 · price: In exchange for assuming these obligations, AA Gables 2 received an upfront aggregate cash payment of approximately $146.7 million. AA Gables 2 has pledged 2,500,000 common units of AST & Science, LLC (the "Pledged Securities") to secure its obligations under the Forward Contract. AA Gables 2 will retain voting rights in the Pledged Securities during the term of the Forward Contract.

F1 · derivative.exercise_date: On June 22, 2026, AA Gables 2, LLC ("AA Gables 2") entered into a master confirmation, supplemental confirmation and pricing notice under Rule 144 under the Securities Act of 1933, as amended, in respect of a variable prepaid forward transaction (the "Forward Contract") with an unaffiliated dealer covering up to a maximum of 2,500,000 shares of the Issuer's Class A Common Stock (the "Subject Shares"). The Forward Contract obligates AA Gables 2 to deliver to the dealer up to the Subject Shares (or at AA Gables 2's election, an equivalent amount of cash) on specified dates in March of 2028. The transaction is divided into four components, each comprising up to 625,000 shares of Class A Common Stock (the "Component Shares").

F2 · derivative.exercise_date: (Continued from Footnote 1) The number of Component Shares (or the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer on the related settlement date will be based on the volume-weighted average price per share of Class A Common Stock on the related valuation date (the "Settlement Price").

F3 · derivative.exercise_date: The number of shares of Class A Common Stock (or, in each case, the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer at settlement will be determined as follows: (A) if the Settlement Price is less than or equal to $59.58 (the "Floor Price"), AA Gables 2 will deliver the Component Shares; (B) if the Settlement Price is less than or equal to $111.72 (the "Cap Price"), but greater than the Floor Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is the Settlement Price; and

F4 · derivative.exercise_date: (Continued from Footnote 3) (C) if the Settlement Price is greater than the Cap Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by (ii) a fraction, the numerator of which is the sum of (x) the Floor Price and (y) the Settlement Price minus the Cap Price, and the denominator of which is the Settlement Price.

F5 · derivative.exercise_date: In exchange for assuming these obligations, AA Gables 2 received an upfront aggregate cash payment of approximately $146.7 million. AA Gables 2 has pledged 2,500,000 common units of AST & Science, LLC (the "Pledged Securities") to secure its obligations under the Forward Contract. AA Gables 2 will retain voting rights in the Pledged Securities during the term of the Forward Contract.

F1 · derivative.expiration_date: On June 22, 2026, AA Gables 2, LLC ("AA Gables 2") entered into a master confirmation, supplemental confirmation and pricing notice under Rule 144 under the Securities Act of 1933, as amended, in respect of a variable prepaid forward transaction (the "Forward Contract") with an unaffiliated dealer covering up to a maximum of 2,500,000 shares of the Issuer's Class A Common Stock (the "Subject Shares"). The Forward Contract obligates AA Gables 2 to deliver to the dealer up to the Subject Shares (or at AA Gables 2's election, an equivalent amount of cash) on specified dates in March of 2028. The transaction is divided into four components, each comprising up to 625,000 shares of Class A Common Stock (the "Component Shares").

F2 · derivative.expiration_date: (Continued from Footnote 1) The number of Component Shares (or the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer on the related settlement date will be based on the volume-weighted average price per share of Class A Common Stock on the related valuation date (the "Settlement Price").

F3 · derivative.expiration_date: The number of shares of Class A Common Stock (or, in each case, the equivalent amount of cash if AA Gables 2 elects cash settlement), to be delivered to the dealer at settlement will be determined as follows: (A) if the Settlement Price is less than or equal to $59.58 (the "Floor Price"), AA Gables 2 will deliver the Component Shares; (B) if the Settlement Price is less than or equal to $111.72 (the "Cap Price"), but greater than the Floor Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by a fraction, the numerator of which is the Floor Price and the denominator of which is the Settlement Price; and

F4 · derivative.expiration_date: (Continued from Footnote 3) (C) if the Settlement Price is greater than the Cap Price, AA Gables 2 will deliver a number of shares of Class A Common Stock equal to (i) the Component Shares, multiplied by (ii) a fraction, the numerator of which is the sum of (x) the Floor Price and (y) the Settlement Price minus the Cap Price, and the denominator of which is the Settlement Price.

F5 · derivative.expiration_date: In exchange for assuming these obligations, AA Gables 2 received an upfront aggregate cash payment of approximately $146.7 million. AA Gables 2 has pledged 2,500,000 common units of AST & Science, LLC (the "Pledged Securities") to secure its obligations under the Forward Contract. AA Gables 2 will retain voting rights in the Pledged Securities during the term of the Forward Contract.

F6 · ownership.nature: Mr. Avellan is the sole member and managing member of AA Gables 2.

SEC source: 0001493152-26-028952 · ownership.xml · nonDerivative · entry 1

Cisneros Adriana · CIK 0001749229 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 786,201

F1 · shares: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

F1 · balance_after: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

SEC source: 0001493152-26-028956 · ownership.xml · nonDerivative · entry 1

Wibergh Johan · CIK 0001729658 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,527

F1 · shares: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

F1 · balance_after: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

SEC source: 0001493152-26-028954 · ownership.xml · nonDerivative · entry 1

SARNOFF RICHARD · CIK 0001236133 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,363

F1 · shares: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

F1 · balance_after: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

SEC source: 0001493152-26-028953 · ownership.xml · nonDerivative · entry 1

RUBIN RONALD L · CIK 0001208969 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,363

F1 · shares: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

F1 · balance_after: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

SEC source: 0001493152-26-028955 · ownership.xml · nonDerivative · entry 1

Torres Julio A. · CIK 0001543079 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,363

F1 · shares: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

F1 · balance_after: Includes a grant of 2,124 restricted stock awards that vest in full on the earlier to occur of (i) the one-year anniversary of the June 12, 2026 grant date and (ii) the date of the next annual meeting of stockholders following the grant date, subject to continued service through the applicable vesting date.

SEC source: 0001493152-26-028542 · ownership.xml · nonDerivative · entry 1

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 503,619

F1 · shares: Represents the weighted average selling price. These shares were sold in multiple transactions at prices ranging from $93.25 per share to $94.64 per share, inclusive. The reporting person undertakes to provide to 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 this footnote.

SEC source: 0001493152-26-028024 · ownership.xml · nonDerivative · entry 1

Wibergh Johan · CIK 0001729658 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,793

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Awards representing 5,611 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 5,403 shares.

SEC source: 0001493152-26-027782 · ownership.xml · nonDerivative · entry 1

Yao Huiwen · CIK 0002027976 · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,750

F1 · shares: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 12, 2025.

F2 · price: Represents the weighted average selling price. These shares were sold in multiple transactions at prices ranging from $90.97 per share to $103.92 per share, inclusive. The reporting person undertakes to provide to 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001493152-26-026923 · ownership.xml · nonDerivative · entry 1

Wisniewski Scott · CIK 0002028702 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 729,596

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,666 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 25,289 shares.

SEC source: 0001493152-26-026924 · ownership.xml · nonDerivative · entry 1

Bernal Maya · CIK 0002027960 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,368

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 6,666 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 4,045 shares.

SEC source: 0001493152-26-026921 · ownership.xml · nonDerivative · entry 1

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 549,428

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,666 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 25,289 shares.

SEC source: 0001493152-26-026925 · ownership.xml · nonDerivative · entry 2

Avellan Abel Antonio · CIK 0001680225 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,542,209

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 83,333 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 50,579 shares.

SEC source: 0001493152-26-026922 · ownership.xml · nonDerivative · entry 1

Gupta Shanti B. · CIK 0001884187 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 412,747

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,666 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 20,391 shares.

SEC source: 0001493152-26-032000 · ownership.xml · nonDerivative · entry 1

Wisniewski Scott · CIK 0002028702 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 729,578

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,666 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 25,271 shares.

F2 · shares: This amendment is being filed to address a revision in the number of shares withheld from 16,377 to 16,395 for payment of tax liability incident to the vesting of Restricted Stock Units.

SEC source: 0001493152-26-025301 · ownership.xml · nonDerivative · entry 1

Yao Huiwen · CIK 0002027976 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,750

F1 · shares: Represents a grant of restricted stock units ("RSUs") that will vest one third on the first and second anniversary of May 15, 2026 and one third on September 30, 2028, subject to the Reporting Person's continued service through the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-024877 · ownership.xml · nonDerivative · entry 1

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 565,805

F1 · shares: Represents shares of Class A Common Stock sold by the Reporting Person primarily to cover anticipated tax liabilities.

SEC source: 0001493152-26-024686 · ownership.xml · derivative · entry 2

Yao Huiwen · CIK 0002027976 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 259,912

Underlying: Class A Common Stock · 40,000 shares

Expires 2029-04-17

F2 · derivative.exercise_date: Six months after vesting, each AST LLC Incentive Equity Option is exercisable for an AST LLC Incentive Equity Unit, each of which is then exchangeable for an AST LLC Common Unit that is redeemable for one share of Class A Common Stock. The AST LLC Incentive Equity Options expire no later than 10 years from the date of grant.

F2 · derivative.expiration_date: Six months after vesting, each AST LLC Incentive Equity Option is exercisable for an AST LLC Incentive Equity Unit, each of which is then exchangeable for an AST LLC Common Unit that is redeemable for one share of Class A Common Stock. The AST LLC Incentive Equity Options expire no later than 10 years from the date of grant.

F2 · ownership.nature: Six months after vesting, each AST LLC Incentive Equity Option is exercisable for an AST LLC Incentive Equity Unit, each of which is then exchangeable for an AST LLC Common Unit that is redeemable for one share of Class A Common Stock. The AST LLC Incentive Equity Options expire no later than 10 years from the date of grant.

SEC source: 0001493152-26-024686 · ownership.xml · nonDerivative · entry 1

Yao Huiwen · CIK 0002027976 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,750

F1 · shares: Represents shares of Class A Common Stock obtained from exercise of AST LLC Incentive Equity Options.

SEC source: 0001493152-26-024687 · ownership.xml · nonDerivative · entry 2

Gupta Shanti B. · CIK 0001884187 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 434,022

F2 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of PSUs representing 22,222 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 10,872 shares.

SEC source: 0001493152-26-024687 · ownership.xml · nonDerivative · entry 1

Gupta Shanti B. · CIK 0001884187 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 445,372

F1 · shares: Represents achievement of certain performance-based stock unit awards ("PSUs") granted on September 26, 2024, following certification by the Issuer's compensation committee that the applicable company and individual performance conditions had been satisfied. One third of the PSUs representing 22,222 shares of Class A Common Stock vested immediately on May 18, 2026 and the remaining PSUs will vest equally on May 15, 2027 and May 15, 2028, subject to the Reporting Person's continued service through the vesting dates. Each PSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.

SEC source: 0001493152-26-023228 · ownership.xml · nonDerivative · entry 1

Torres Julio A. · CIK 0001543079 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,239

F1 · shares: Represents shares of Class A Common Stock sold by the Reporting Person to cover anticipated tax liabilities in connection with the vesting of granted RSUs.

F2 · price: Represents the weighted average selling price. These shares were sold in multiple transactions at prices ranging from $76.06 per share to $76.56 per share, inclusive. The reporting person undertakes to provide to 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001493152-26-021788 · ownership.xml · nonDerivative · entry 1

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 570,805

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 75,000 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 45,487 shares.

SEC source: 0000950103-26-005837 · ownership.xml · nonDerivative · entry 2

Mikitani Hiroshi · CIK 0001760624 · 10% owner

Rakuten Group, Inc. · CIK 0001294591 · 10% owner

Rakuten Mobile, Inc. · CIK 0002035591 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 27,980,155

F3 · shares: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.04 to $88.71 per share, inclusive. The Reporting Persons undertake to provide to 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 sold at each separate price within the ranges set forth in this footnote 2 to this Form 4.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.04 to $88.71 per share, inclusive. The Reporting Persons undertake to provide to 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 sold at each separate price within the ranges set forth in this footnote 2 to this Form 4.

F1 · balance_after: The shares of Class A Common Stock of the Issuer (the "Common Stock") set forth herein are held of record by Rakuten Mobile, Inc., a wholly-owned subsidiary of Rakuten Group, Inc. Hiroshi Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile, Inc. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani and Rakuten Group, Inc. may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile, Inc. Mr. Mikitani and Rakuten Group, Inc. hereby disclaim beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein.

F1 · ownership.direct: The shares of Class A Common Stock of the Issuer (the "Common Stock") set forth herein are held of record by Rakuten Mobile, Inc., a wholly-owned subsidiary of Rakuten Group, Inc. Hiroshi Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile, Inc. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani and Rakuten Group, Inc. may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile, Inc. Mr. Mikitani and Rakuten Group, Inc. hereby disclaim beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein.

F1 · ownership.nature: The shares of Class A Common Stock of the Issuer (the "Common Stock") set forth herein are held of record by Rakuten Mobile, Inc., a wholly-owned subsidiary of Rakuten Group, Inc. Hiroshi Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile, Inc. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani and Rakuten Group, Inc. may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile, Inc. Mr. Mikitani and Rakuten Group, Inc. hereby disclaim beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein.

SEC source: 0000950103-26-005837 · ownership.xml · nonDerivative · entry 1

Mikitani Hiroshi · CIK 0001760624 · 10% owner

Rakuten Group, Inc. · CIK 0001294591 · 10% owner

Rakuten Mobile, Inc. · CIK 0002035591 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 29,330,155

F2 · shares: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.50 to $103.96 per share, inclusive. The Reporting Persons undertake to provide to 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 sold at each separate price within the ranges set forth in this footnote 2 to this Form 4.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.50 to $103.96 per share, inclusive. The Reporting Persons undertake to provide to 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 sold at each separate price within the ranges set forth in this footnote 2 to this Form 4.

F1 · balance_after: The shares of Class A Common Stock of the Issuer (the "Common Stock") set forth herein are held of record by Rakuten Mobile, Inc., a wholly-owned subsidiary of Rakuten Group, Inc. Hiroshi Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile, Inc. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani and Rakuten Group, Inc. may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile, Inc. Mr. Mikitani and Rakuten Group, Inc. hereby disclaim beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein.

F1 · ownership.direct: The shares of Class A Common Stock of the Issuer (the "Common Stock") set forth herein are held of record by Rakuten Mobile, Inc., a wholly-owned subsidiary of Rakuten Group, Inc. Hiroshi Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile, Inc. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani and Rakuten Group, Inc. may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile, Inc. Mr. Mikitani and Rakuten Group, Inc. hereby disclaim beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein.

F1 · ownership.nature: The shares of Class A Common Stock of the Issuer (the "Common Stock") set forth herein are held of record by Rakuten Mobile, Inc., a wholly-owned subsidiary of Rakuten Group, Inc. Hiroshi Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile, Inc. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani and Rakuten Group, Inc. may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile, Inc. Mr. Mikitani and Rakuten Group, Inc. hereby disclaim beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein.

SEC source: 0001493152-26-015015 · ownership.xml · nonDerivative · entry 1

Wisniewski Scott · CIK 0002028702 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 771,877

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 41,145 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 25,904 shares.

SEC source: 0001493152-26-015014 · ownership.xml · nonDerivative · entry 1

Johnson Andrew Martin · CIK 0001548887 · Director · CFO and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 600,318

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 33,333 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 21,166 shares.

SEC source: 0001493152-26-015012 · ownership.xml · nonDerivative · entry 2

Avellan Abel Antonio · CIK 0001680225 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,574,963

F1 · shares: Represents a payment of tax liability via forfeiture by withholding securities incident to the vesting of Restricted Stock Units representing 61,458 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 38,968 shares. The Reporting Person did not sell any shares.

SEC source: 0001493152-26-015013 · ownership.xml · nonDerivative · entry 1

Gupta Shanti B. · CIK 0001884187 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 378,705

F1 · shares: Represents a payment of tax liability by withholding securities incident to the vesting of Restricted Stock Units representing 18,229 shares of Class A Common Stock issued in accordance with Rule 16b-3, resulting in a net vested number of 9,872 shares.