Insider filing report for Changes in Beneficial Ownership
- Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
- Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 3)*
|
AST SpaceMobile, Inc. (Name of Issuer) |
Class A Common Stock (Title of Class of Securities) |
00217D100 (CUSIP Number) |
Hiroshi Mikitani c/o Rakuten Mobile, Inc., 1-14-1 Tamagawa, Setagaya-Ku Tokyo, M0, 158-0094 81-50-5581-6910 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) |
04/22/2026 (Date of Event Which Requires Filing of This Statement) |
If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.


The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the
Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).
SCHEDULE 13D
|
| CUSIP No. | 00217D100 |
| 1 |
Name of reporting person
Rakuten Mobile, Inc. | ||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a)
(b)
| ||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
![]() | ||||||||
| 6 | Citizenship or place of organization
JAPAN
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
21,020,155.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
![]() | ||||||||
| 13 | Percent of class represented by amount in Row (11)
7.2 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
CO |
Comment for Type of Reporting Person:
(1) Comprised of 21,020,155 shares of Class A Common Stock of the Issuer. As discussed in Item 2 of this Schedule 13D/A, the other Stockholder Parties (as defined herein) are not included as reporting persons in this Schedule 13D/A, and the Reporting Persons expressly disclaim beneficial ownership of the shares of Class A Common Stock held by the other Stockholder Parties. (2) Calculations of the percentage of the shares of Class A Common Stock beneficially owned is based on 292,637,039 shares of Class A Common Stock outstanding as of February 26, 2026, as reported in the Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed by the Issuer with the SEC on March 2, 2026 (the "Form 10-K").
SCHEDULE 13D
|
| CUSIP No. | 00217D100 |
| 1 |
Name of reporting person
Hiroshi Mikitani | ||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a)
(b)
| ||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
![]() | ||||||||
| 6 | Citizenship or place of organization
JAPAN
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
21,020,155.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
![]() | ||||||||
| 13 | Percent of class represented by amount in Row (11)
7.2 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
Comment for Type of Reporting Person:
(1) Comprised of 21,020,155 of Class A Common Stock of the Issuer. Hiroshi Mikitani ("Mr. Mikitani") is the founder, Chairman and Chief Executive Officer of Rakuten Group, Inc. ("Rakuten Group") and Rakuten Mobile, Inc. ("Rakuten Mobile") and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile. Mr. Mikitani hereby disclaims beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein. As discussed in Item 2 of this Schedule 13D, the other Stockholder Parties (as defined herein) are not included as reporting persons in this Schedule 13D, and the Reporting Persons expressly disclaim beneficial ownership of the shares of Class A Common Stock held by the other Stockholder Parties. (2) Calculations of the percentage of the shares of Class A Common Stock beneficially owned is based on 292,637,039 shares of Class A Common Stock outstanding as of February 26, 2026, as reported in the Annual Report on Form 10-K.
SCHEDULE 13D
|
| CUSIP No. | 00217D100 |
| 1 |
Name of reporting person
Rakuten Group, Inc. | ||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a)
(b)
| ||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
OO | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
![]() | ||||||||
| 6 | Citizenship or place of organization
JAPAN
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
21,020,155.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
![]() | ||||||||
| 13 | Percent of class represented by amount in Row (11)
7.2 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
CO |
Comment for Type of Reporting Person:
(1) Comprised of 21,020,155 of Class A Common Stock of the Issuer. Rakuten Mobile is a wholly-owned subsidiary of Rakuten Group. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Rakuten Group may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile. Rakuten Group hereby disclaims beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein. As discussed in Item 2 of this Schedule 13D, the other Stockholder Parties (as defined herein) are not included as reporting persons in this Schedule 13D, and the Reporting Persons expressly disclaim beneficial ownership of the shares of Class A Common Stock held by the other Stockholder Parties. (2) Calculations of the percentage of the shares of Class A Common Stock beneficially owned is based on 292,637,039 shares of Class A Common Stock outstanding as of February 26, 2026, as reported in the Annual Report on Form 10-K.
SCHEDULE 13D
|
| Item 1. | Security and Issuer | |
| (a) | Title of Class of Securities:
Class A Common Stock | |
| (b) | Name of Issuer:
AST SpaceMobile, Inc. | |
| (c) | Address of Issuer's Principal Executive Offices:
c/o Rakuten Mobile, Inc., 1-14-1 Tamagawa, Setagaya-Ku, Tokyo,
JAPAN
, 158-0094. | |
Item 1 Comment:
This Schedule 13D/A (this "Schedule 13D/A") amends and supplements the Schedule 13D filed by the Reporting Persons (as defined below) on April 6, 2021 (the "Original Schedule 13D"), as amended by Amendment No.1 filed on October 10, 2024 ("Amendment No. 1") and amended by Amendment No. 2 filed on April 16, 2026 ("Amendment No. 2") (the Original Schedule 13D, as amended and supplemented by Amendment No. 1, Amendment No. 2, and this Schedule 13D/A, the "Schedule 13D") with respect to the Class A Common Stock. Capitalized terms used in this Schedule 13D/A and not defined herein shall have the same meanings ascribed to them in the Original Schedule 13D. | ||
| Item 3. | Source and Amount of Funds or Other Consideration | |
Item 3 of the Original Schedule 13D is hereby amended to add the following: The information set forth in Items 5 and 6 of this Schedule 13D/A is incorporated by reference into this Item 3. | ||
| Item 5. | Interest in Securities of the Issuer | |
| (a) | Item 5 of the Original Schedule 13D is hereby amended to add the following: Mr. Mikitani is the founder, Chairman and Chief Executive Officer of Rakuten Group and Rakuten Mobile and has voting and investment discretion with respect to the securities held of record by Rakuten Mobile. By reason of the provisions of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, Mr. Mikitani may be deemed to be the beneficial owner of the securities beneficially owned by Rakuten Mobile. Mr. Mikitani hereby disclaims beneficial ownership of all such securities, except to the extent of any indirect pecuniary interest therein. Amount beneficially owned: 21,020,155 shares of Class A Common Stock. Percent of Class: 7.2% Number of shares the Reporting Persons have: Sole power to vote or direct the vote: 21,020,155 shares of Class A Common Stock. Each share of Class A Common Stock carries one vote per share. Shared power to vote: 0 Sole power to dispose or direct the disposition of: 21,020,155 shares of Class A Common Stock. Shared power to dispose or direct the disposition of: 0 Calculations of the percentage of the shares of Class A Common Stock beneficially owned is based on 292,637,039 shares of Class A Common Stock outstanding as of February 26, 2026, as reported in the Annual Report on Form 10-K. | |
| (c) | Except as described in this Schedule 13D/A, during the past 60 days, the Reporting Persons effected the following transactions with respect to Class A Common Stock: Date: April 17, 2026 Transaction: Sale Number of Shares: 860,000 Average Price Per Share: $87.9255 Date: April 20, 2026 Transaction: Sale Number of Shares: 700,000 Average Price Per Share: $79.4141 Date: April 21, 2026 Transaction: Sale Number of Shares: 800,000 Average Price Per Share: $82.7550 Date: April 22, 2026 Transaction: Sale Number of Shares: 2,200,000 Average Price Per Share: $84.6923 Date: April 23, 2026 Transaction: Sale Number of Shares: 250,000 Average Price Per Share: $79.7797 Date: April 24, 2026 Transaction: Sale Number of Shares: 250,000 Average Price Per Share: $77.4017 The sales set forth above were effected pursuant to the Trading Plan in open market transactions. | |
| (d) | None. | |
| (e) | Not applicable. | |
| Item 6. | Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer | |
The information set forth or incorporated by reference in Items 3 and 5 of this Schedule 13D/A is incorporated by reference in its entirety into this Item 6. Except as set forth in the Schedule 13D, the Reporting Persons do not have any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any securities of the Issuer, including but not limited to any contracts, arrangements, understandings or relationships concerning the transfer or voting of such securities, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies. | ||
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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