# EDGAR Filing Document

**Accession Number:** 0001780312
**File Stem:** 0000950103-26-005840
**Filing Date:** 2026-4
**Character Count:** 38210
**Document Hash:** b54a835b51feacc5b8f2ee7513fbee30
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950103-26-005840.hdr.sgml**: 20260416

**ACCESSION NUMBER**: 0000950103-26-005840

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260416

**DATE AS OF CHANGE**: 20260416

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AST SpaceMobile, Inc.
- **CENTRAL INDEX KEY:** 0001780312
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMMUNICATION SERVICES, NEC [4899]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91129
- **FILM NUMBER:** 26869168

**BUSINESS ADDRESS:**
- **STREET 1:** MIDLAND INTL. AIR & SPACE PORT
- **STREET 2:** 2901 ENTERPRISE LANE
- **CITY:** MIDLAND
- **STATE:** TX
- **ZIP:** 79706
- **BUSINESS PHONE:** 432-276-3966

**MAIL ADDRESS:**
- **STREET 1:** MIDLAND INTL. AIR & SPACE PORT
- **STREET 2:** 2901 ENTERPRISE LANE
- **CITY:** MIDLAND
- **STATE:** TX
- **ZIP:** 79706

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** New Providence Acquisition Corp.
- **DATE OF NAME CHANGE:** 20190620
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mikitani Hiroshi
- **CENTRAL INDEX KEY:** 0001760624

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** C/O RAKUTEN MOBILE, INC.
- **STREET 2:** 1-14-1 TAMAGAWA, SETAGAYA-KU
- **CITY:** TOKYO
- **PROVINCE COUNTRY:** M0

## Ex-9

**Exhibit 9**

**JOINT FILING AGREEMENT**

This joint filing agreement is made and entered into as of this 16th day of April, 2026, among Hiroshi Mikitani, Rakuten Mobile, Inc. and Rakuten Group, Inc.

The parties to this Agreement hereby agree to prepare jointly and file timely (and otherwise to deliver as appropriate) all filings on any Forms 3, 4, or 5 or Schedules 13D or 13G, and any and all amendments thereto and any other documents relating thereto (collectively, the "Filings") as required to be filed pursuant to the Securities Exchange Act of 1934, as amended. The parties to this Agreement further agree and covenant that each will fully cooperate with such other parties in the preparation, timely filing, and delivery of all such Filings.

IN WITNESS WHEREOF, the parties hereto have executed this agreement as of the date first set forth above.

Date: April 16, 2026

---

| | |
|:---|:---|
| By: | /s/ Hiroshi Mikitani |
| Name: | Hiroshi Mikitani<br>|

---

---

| | |
|:---|:---|
| **Rakuten Mobile, Inc.** | **Rakuten Mobile, Inc.** |
| By: | /s/ Atsushi Maeda<br>|
| Name: | Atsushi Maeda<br>|
|  | Director, Executive Vice President and Chief Financial Officer  |

---

---

| | |
|:---|:---|
| **Rakuten Group, Inc.** | **Rakuten Group, Inc.** |
| By: | /s/ Kentaro Hyakuno  |
| Name: | Kentaro Hyakuno<br>|
|  | Representative Director, Group Senior Executive Vice President<br>|

---

## Ex-10

**Exhibit 10**

[Date]

BofA Securities, Inc.

Bank of America Tower

One Bryant Park

New York, NY 10036

**<u>Re: Enhanced Open Market Sales Under Rule 144</u>**

Ladies and Gentlemen:

This agreement dated as of [date] this "**Agreement**") between [ ] (the "**Client**") and BofA Securities, Inc. ("**Broker**"), acting as sales agent for the Client, is intended to create a written trading plan (subject to the terms and conditions of this Agreement, the "**Plan**") for the periodic sale of shares of [ ] (the "**Shares**") of [ ] (the "**Issuer**") pursuant to Rule 144 under the Securities Act of 1933, as amended (the "**Securities Act**").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. Commencing on [date] (the "**Start Date**"), Broker is authorized to use its good faith and commercially reasonable efforts to sell on the Client's behalf as a "limit, not held" order the Shares as specified in Schedule I attached hereto, or if that date is not a trading day, on the immediately following trading day; provided that, in no event shall the number of Shares sold exceed [ ] (the "**Maximum Amount**"). When the terms and conditions for sale set forth in this Agreement have been met, Broker is not required to execute sales immediately and may use its discretion to work the sale of Shares on each trading day as a "not held" order, using its brokerage judgment as to the timing, price and amount of sales, subject to the limits set forth in this Agreement. If in Broker's judgment market conditions will not permit the sale of the Shares pursuant to the terms specified in Schedule I, or if that amount would exceed any of the limits set forth in this Agreement, Broker shall sell such lesser amount, if any, it deems practicable. Any portion of the Shares not sold will be carried forward until the Broker determines that all or part of the unsold portion can be sold under the then prevailing market conditions and subject to those limits, until all of the unsold portion has been sold.

Any Maximum Amount, price limits or other terms and conditions for sale set forth in this Agreement may only be adjusted proportionally to reflect any stock split, stock dividend, spin-off or other reorganization, recapitalization or comparable transaction affecting the capital stock of the Issuer. Any price limits stated in this Agreement shall be applied before giving effect to any commissions, transaction fees or other charges or any taxes or other amounts withheld. Broker may act, in its sole discretion, as broker or as principal (including, if Broker is a market-maker in the Issuer common stock at the time that any sale is to be made under this Agreement, in its market-making capacity). Broker will be entitled to a commission that is calculated in accordance with the terms specified in Schedule I, payable upon conclusion of the Plan Period (as defined below). The net proceeds of the sales will be credited to the Client's account with Broker.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. The time period beginning on and including the Start Date to and including the date of the termination of this Agreement is referred to hereof as the "**Plan Period**." This Agreement shall terminate on the earlier of: (a) [date], (b) the sale of any Maximum Amount under this Agreement; (c) the date on which Broker becomes aware of the commencement or impending commencement of any voluntary or involuntary proceedings in respect of or triggered by the Issuer's bankruptcy or insolvency; or (d) the date (such date, the "**Optional Termination Date**") on which Client delivers to Broker written notice of termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. The Client agrees to deliver or cause to be delivered to Broker, such number of Shares as have been sold pursuant to the Plan in accordance with Broker's customary procedures for the settlement of sales of restricted securities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. Subject to the limits in this Agreement, Broker shall have full discretion with respect to the execution of all sales, and the Client will not exercise any subsequent influence over how, when, or

whether to effect sales; provided, however, that in acting under this Agreement Broker will be an independent contractor or the Client's broker; Broker will not be the Client's trustee or fiduciary.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. During the term of this Agreement, the Client agrees that neither it nor its officers or employees will disclose any material nonpublic information about the Shares or the Issuer, or otherwise discuss or correspond regarding the Shares, the Issuer, this Agreement or the Plan, to or with Broker's officers and employees who are directly responsible for making investment decisions on behalf of the Broker to execute sales of Shares in connection with this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6. The Client represents and warrants to Broker that it has fully paid for the Shares and has a holding period of at least (i) one year from the date of acquisition, or (ii) six months from the date of acquisition; provided that, it has confirmed that Issuer is, and has been for a period of at least 90 days immediately before the date hereof, subject to the reporting requirements of section 13 or 15(d) of the Exchange Act and has filed all required reports under section 13 or 15(d) of the Exchange Act, as applicable, during the 12 months preceding the date hereof (or for such shorter period that the Issuer was required to file such reports), other than Form 8-K reports.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7. The Client represents and warrants to Broker that the conditions set forth in Rule 144(i)(2) under the Securities Act shall be satisfied as of the time of any sales pursuant to the Plan.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8. If the Client indicates on the signature page of this Agreement that it is not, and has not been, at any time during the three months ending on the date hereof, an "affiliate" of the Issuer, the Client agrees to notify Broker immediately in writing if, at any time during the Plan Period of this Agreement, it becomes an "affiliate" of the Issuer.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9. If the Client indicates on the signature page of this Agreement that it may be an "affiliate" of the Issuer, Client shall file, or shall cause an authorized agent to file on its behalf, a Form 144 electronically with the Securities and Exchange Commission in accordance with Rule 144(h)(1) and (h)(3).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10. If the Client indicates on the signature page of this Agreement that it may be an "affiliate" of the Issuer, the Client agrees that in anticipation of or in connection with sales of any Shares that are to be sold under Rule 144, it will not directly or indirectly solicit or arrange for the solicitation of orders to buy the Shares. The Client also agrees that it will not make or cause to be made any sale of Issuer securities outside of this Agreement if such sale, because of the volume limits of Rule 144, would preclude a sale that otherwise would be made pursuant to this Agreement. In addition, the Client acknowledges and understands that if it makes any sales of, or other transactions in, the Shares outside of this Agreement that has the effect of reducing the number of Shares that may be sold under this Agreement because of the volume limitations of Rule 144(e), the Plan may be deemed to be amended.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11. If the Client indicates on the signature page of this Agreement that it may be an "affiliate" of the Issuer, the Client represents and warrants that in the three month period preceding the date of this Agreement, neither the Client nor any person who would be considered to be the same "person" (as such term is used in Rule 144(a)(2) under the Securities Act) has, without the written consent of Broker, sold or loaned any Shares or hedged (through swaps, options, short sales or otherwise) any long position in the Shares, and the Client agrees that until the termination of this Agreement it will give Broker immediate written notice of all such sales, loans or hedges that occur on or after the Start Date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12. For all sales under this Agreement, Broker's only responsibilities under this Agreement are to make the sales and provide the information prescribed hereof. The Client shall reimburse Broker or any of its affiliates and their directors, officers, employees or agents (collectively, "**Indemnified Persons**") for its legal and other out-of-pocket expenses (including the cost of any investigation and preparation) incurred in connection therewith promptly and shall indemnify and holds harmless Indemnified Persons from and against any losses, claims, damages, expenses and liabilities to which any Indemnified Person may become liable arising out of or relating to (a) this Agreement, (b) any assertion that any of the sales made pursuant to this Agreement constitute violations by the Client of Rule 10b-5, Rule 14e-3 of the Exchange Act, or any other federal, state or foreign securities laws or regulations prohibiting trading while aware of material

nonpublic information, or (c) any related regulatory investigation or inquiry. Notwithstanding the foregoing, Client will have no liability to indemnify any Indemnified Persons to the extent the subject investigation or preparation results from: (a) any breach by Broker under this Agreement or (b) Broker's gross negligence or misconduct. This paragraph shall survive any termination of this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13. In connection with its acceptance of this Agreement, the Client represents, warrants and agrees that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a. as of the date hereof, it is not aware of any material nonpublic information regarding the Shares or the Issuer, and on each day during the Plan Period, the Client shall be deemed to represent to Broker that as of such day it is not aware of any material nonpublic information regarding the Shares or the Issuer. If at any time during the Plan Period the Client is unable to make such representation to Broker, the Client shall immediately notify Broker of the termination of the Plan pursuant to Section 2(d) of this Agreement, without conveying any material nonpublic information to any employees of Broker who are responsible for executing sales under the Plan. The Client understands that this Plan will not benefit from the affirmative defense of Rule 10b5-1(c) under the Exchange Act.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b. it is entering into this Agreement in good faith and not as part of a plan or scheme to evade the prohibitions of Rule 10b-5 or any other provision of any federal, state or foreign securities laws or regulations, and will act in good faith with respect to this Agreement and the Plan;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c. The sales (i) will not violate any corporate policy of the Issuer or other rules or regulations of the Issuer applicable to the Client or its affiliates; (ii) will not conflict with or exceed the authority granted under the resolutions of the board of directors of the Client authorizing this Agreement or the consummation of the Plan, and (iii) are not prohibited or restricted by any legal, regulatory or contractual restriction or undertaking binding on the Client or its affiliates;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d. For all sales under this Agreement, Client acknowledges the rules and restrictions set forth in the Exchange Act and that it has full responsibility for, and Broker shall have no liability or obligations with respect to, compliance with (i) any reporting requirements under Sections 13 or 16 of the Exchange Act, (ii) the short-swing profit recovery provisions under Section 16 of the Exchange Act, and (iii) any state or foreign securities laws or regulations concerning trading while aware of material nonpublic information;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e. It is aware that by granting Broker discretion to work the sales of the Shares as "not held" orders, (i) Broker may trade at the same price or a better price than that prescribed for sales pursuant to this Agreement and (ii) it is possible that Shares might not be sold notwithstanding the satisfaction of all the conditions set forth in this Agreement for their sale;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;f. It is not relying, and has not relied, upon Broker or any affiliate of Broker with respect to the legal, accounting, tax or other implications of this Agreement and that it has conducted its own independent analyses of the legal, accounting, tax and other implications hereof; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;g. It is and will be in compliance with its reporting obligations under the Exchange Act (including but not limited to under Section 16, Section 13(d) and Section 13(g) of the Exchange Act), and it will promptly provide Broker with a copy of any report filed thereunder for all sales under this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14. For all sales under this Agreement, Broker agrees to provide the Client with reports of all sales made pursuant to this Agreement, promptly following execution of any sales under this Agreement. Reports and confirmations that are sent in the form of electronic mail shall be deemed received at the time at which they are sent; provided that they are sent to the email address(es) as set forth in this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15. All notices to Broker under this Agreement shall be given to Broker, Attention: [ ], by (i) email at [ ] followed by telephonic confirmation at [ ] or (ii) by certified mail or overnight courier to the address below:

[ ]

All notices to the Client under this Agreement shall be given by email, certified mail or overnight courier as follows:

[ ]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16. This Agreement will be binding upon, and inure to the benefit of, the Client and its successors and permitted assigns and Broker and its successors and permitted assigns. Neither Broker nor the Client may assign this Agreement without the written consent of the other, and any attempted assignment without consent shall be void; provided, however, that notwithstanding anything herein to the contrary, Broker may assign this Agreement to an affiliate under common control with Broker without obtaining prior consent, written or otherwise.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17. The parties acknowledge and agree that this Agreement is a "securities contract" as such term is defined in Section 741(7) of Title 11 of the United States Code (or any successor section), entitled to all of the protections given such contracts under that Title.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18. **THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK. The parties hereto irrevocably submit to the exclusive jurisdiction of the courts of the state of new york and the united states court for the southern district of new york in connection with all matters relating hereto and waive any objection to the laying of venue in, and any claim of inconvenient forum with respect to, these courts. each party hereto irrevocably and unconditionally waives any and all rights to a jury trial in respect of any claim or cause of action in any court in any proceedings or disputes.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19. This Agreement constitutes the entire agreement between the parties with respect to the Plan and supersedes any prior agreements or understandings with regard to the Plan. This Agreement may be executed in one or more counterparts, each of which when so executed and delivered shall constitute a single, binding agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20. In the event that Broker becomes subject to a proceeding under a U.S. Special Resolution Regime, the transfer from Broker of this Agreement, and any interest and obligation in or under this Agreement, will be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement, and any such interest and obligation, were governed by the laws of the United States or a state of the United States. In the event that Broker or any BHC Act Affiliate of Broker becomes subject to a proceeding under a U.S. Special Resolution Regime, Default Rights under this Agreement that may be exercised against Broker are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Agreement were governed by the laws of the United States or a state of the United States. For purposes of this paragraph, "**BHC Act Affiliate**" has the meaning assigned to the term "affiliate" in, and shall be interpreted in accordance with, 12 U.S.C. § 1841(k); "**Default Right**" has the meaning assigned to that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2, 382.1, as applicable; and "**U.S. Special Resolution Regime**" means each

of (i) the Federal Deposit Insurance Act and the regulations promulgated thereunder and (ii) Title II of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the regulations promulgated thereunder.

[*Signatures appear on following page*]

Representation about status as an "affiliate," as defined in Rule 144(a)(1) of the Securities Act:

______ the Client represents to Broker that, as of the date of the Agreement, it is not, and has not been, at any time during the three months ending on the date hereof, an affiliate of the Issuer.

_____ the Client represents to Broker that it may be an affiliate of the Issuer.

---

| | |
|:---|:---|
| Agreed as of the date first set forth above: | Agreed as of the date first set forth above: |
| [ ] | [ ] |
| By: |  |
|  | Name:<br>|
|  | Title: |

---

---

| |
|:---|
| BOFA SECURITIE4S, INC. |
| By: |
| Name: |
| Title: |

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### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 2)**

**AST SpaceMobile, Inc.**

*(Name of Issuer)*

**Class A Common Stock**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Hiroshi Mikitani**<br>c/o Rakuten Mobile, Inc.<br>1-14-1 Tamagawa, Setagaya-Ku<br>Tokyo M0 158-0094<br>81-50-5581-6910

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**04/14/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Rakuten Mobile, Inc.** | Name of reporting person<br>**Rakuten Mobile, Inc.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**M0** | Citizenship or place of organization<br>**M0** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**26080155.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**26080155.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**26080155.00** | Aggregate amount beneficially owned by each reporting person<br>**26080155.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**8.9%** | Percent of class represented by amount in Row (11)<br>**8.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** (1) Comprised of 26,080,155 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").

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Hiroshi Mikitani** | Name of reporting person<br>**Hiroshi Mikitani** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**M0** | Citizenship or place of organization<br>**M0** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**26080155.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**26080155.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**26080155.00** | Aggregate amount beneficially owned by each reporting person<br>**26080155.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**8.9%** | Percent of class represented by amount in Row (11)<br>**8.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** (1) Comprised of 26,080,155 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.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Rakuten Group, Inc.** | Name of reporting person<br>**Rakuten Group, Inc.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**M0** | Citizenship or place of organization<br>**M0** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**26080155.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**26080155.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**26080155.00** | Aggregate amount beneficially owned by each reporting person<br>**26080155.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**8.9%** | Percent of class represented by amount in Row (11)<br>**8.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** (1) Comprised of 26,080,155 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.

**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, M0, 158-0094

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") (the Original Schedule 13D, as amended and supplemented by Amendment No. 1 and this Schedule 13D/A) 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 4. Purpose of Transaction**

Item 4 of the Original Schedule 13D is hereby amended to add the following:

Trading Plan

On April 14, 2026, Rakuten Mobile entered into a trading plan with BofA Securities, Inc. ("BofA") (the "Trading Plan"). Pursuant to the Trading Plan, BofA will use commercially reasonable efforts to sell, on Rakuten's behalf and on an agency basis, up to 15,510,077 shares of Class A Common Stock (the "Sale Share") in open market transactions. The Sale Shares represent approximately 5.3% of the outstanding Class A Common Stock and approximately half of Rakuten's total holdings of Class A Common Stock. There is no assurance that the full number of Sale Shares will be sold under the Trading Plan. Rakuten Mobile is entitled to terminate sales under the Trading Plan at any time. The foregoing description of the Trading Plan does not purport to be complete and is qualified in its entirety by reference to the full text of the Trading Plan, a form of which is attached hereto as Exhibit 10 and incorporated herein by reference.

**Item 5. Interest in Securities of the Issuer**

**(a)**
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: 26,080,155 shares of Class A Common Stock.

Percent of Class: 8.9%

Number of shares the Reporting Persons have:

Sole power to vote or direct the vote: 26,080,155 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: 26,080,155 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.

**(b)**
—

**(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 14, 2026
Transaction: Sale
Number of Shares: 1,690,000
Average Price Per Share: $91.4194

Date: April 15, 2026
Transaction: Sale
Number of Shares: 1,350,000
Average Price Per Share: $86.2211

Date: April 16, 2026
Transaction: Sale
Number of Shares: 1,900,000
Average Price Per Share: $89.4191

The sales set forth above were effected pursuant to the Trading Plan in open market transactions.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The information set forth or incorporated by reference in Items 2, 3, 4 and 5 of this Schedule 13D/A is incorporated by reference in its entirety into this Item 6. A form of the Trading Plan is attached hereto as Exhibit 10 and incorporated herein by reference.

Except as set forth herein, 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.

**Reporting Person:** Rakuten Mobile, Inc.

**Signature:** /s/ Atsushi Maeda

**Name/Title:** Atsushi Maeda/Director, Executive Vice President and Chief Financial Officer

**Date:** 04/16/2026

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.

**Reporting Person:** Hiroshi Mikitani

**Signature:** /s/ Hiroshi Mikitani

**Name/Title:** Hiroshi Mikitani

**Date:** 04/16/2026

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.

**Reporting Person:** Rakuten Group, Inc.

**Signature:** /s/ Kentaro Hyakuno

**Name/Title:** Kentaro Hyakuno/Representative Director, Group Senior Executive Vice President

**Date:** 04/16/2026