# EDGAR Filing Document

**Accession Number:** 0001872228
**File Stem:** 0000905148-25-002884
**Filing Date:** 2025-8
**Character Count:** 12456
**Document Hash:** 56e52837aaa47e9e43265e082fad596c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000905148-25-002884.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0000905148-25-002884

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250814

**DATE AS OF CHANGE**: 20250814

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Thayer Ventures Acquisition Corp II
- **CENTRAL INDEX KEY:** 0001872228
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 981795713
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95045
- **FILM NUMBER:** 251214674

**BUSINESS ADDRESS:**
- **STREET 1:** 25852 MCBEAN PARKWAY
- **STREET 2:** SUITE 508
- **CITY:** VALENCIA
- **STATE:** CA
- **ZIP:** 91355
- **BUSINESS PHONE:** (415) 782-1414

**MAIL ADDRESS:**
- **STREET 1:** 25852 MCBEAN PARKWAY
- **STREET 2:** SUITE 508
- **CITY:** VALENCIA
- **STATE:** CA
- **ZIP:** 91355
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Verition Fund Management LLC
- **CENTRAL INDEX KEY:** 0001454027

**ORGANIZATION NAME:**
- **EIN:** 262472334
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G

**BUSINESS ADDRESS:**
- **STREET 1:** ONE AMERICAN LANE
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06831
- **BUSINESS PHONE:** 203-742-7740

**MAIL ADDRESS:**
- **STREET 1:** ONE AMERICAN LANE
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06831

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Verition Fund Managegment LLC
- **DATE OF NAME CHANGE:** 20090114

## Ex-1

<u>EXHIBIT I</u>

#### JOINT FILING AGREEMENT

#### PURSUANT TO RULE 13d-1(k)

The undersigned hereby agree that the statement on Schedule 13G with respect to the Class A Ordinary Shares of Thayer Ventures Acquisition Corp. II, dated as of August 14, 2025, is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

Date: August 14, 2025

---

| | |
|:---|:---|
| **VERITION FUND MANAGEMENT LLC**<br>****  | **VERITION FUND MANAGEMENT LLC**<br>****  |
| **By:** | /s/ William Anderson<br>|
| **Name:** | William Anderson<br>|
| **Title:**<br>| CFO<br>|
| **NICHOLAS MAOUNIS** | **NICHOLAS MAOUNIS** |
| **/s/ Nicholas Maounis**<br>|  |

---

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** Thayer Ventures Acquisition Corp II

**Title of Class of Securities:** Class A Ordinary shares, par value $0.0001 per share

**CUSIP Number:** G87890128

**Date of Event Which Requires Filing of this Statement:** 06/30/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [x] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Verition Fund Management LLC | Names of Reporting Persons<br>Verition Fund Management LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>1030188 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>1030188 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1030188 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1030188 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.03% | Percent of Class Represented by Amount in Row (9)<br>5.03% |
| 12. | Type of Reporting Person (See Instructions)<br>IA, OO | Type of Reporting Person (See Instructions)<br>IA, OO |

---

| 1. | Names of Reporting Persons<br>Maounis Nicholas Matthew | Names of Reporting Persons<br>Maounis Nicholas Matthew |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>1030188 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>1030188 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1030188 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1030188 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.03% | Percent of Class Represented by Amount in Row (9)<br>5.03% |
| 12. | Type of Reporting Person (See Instructions)<br>IN, HC | Type of Reporting Person (See Instructions)<br>IN, HC |

---

**Item 1(a). Name of Issuer:**
Thayer Ventures Acquisition Corp II

**Item 1(b). Address of Issuer's Principal Executive Offices:**
25852 McBean Parkway, Suite 508, Valencia, California, 91355

**Item 2(a). Name of Person Filing:**
This Statement is filed on behalf of each of the following persons: Verition Fund Management LLC and Nicholas Maounis (collectively, the "Reporting Persons"). This Statement relates to Class A Ordinary shares, par value $0.0001 per share ("Class A Ordinary Shares") underlying units ("Units") held for the account of Verition Multi-Strategy Master Fund Ltd. Each Unit consists of one Class A Ordinary Share and one right (each a "Unit Right") entitling the holder to receive one-tenth of one Class A Ordinary Share upon the consummation of the Issuer's initial business combination. Verition Fund Management LLC serves as the investment manager to Verition Multi-Strategy Master Fund Ltd. Mr. Nicholas Maounis is the managing member of Verition Fund Management LLC. In such capacities, each of the Reporting Persons may be deemed to have voting and dispositive power over the securities held for Verition Multi-Strategy Master Fund Ltd.

**Item 2(b). Address of Principal Business Office:**
The principal business office of each of the Reporting Persons is One American Lane, Greenwich, CT 06831.

**Item 2(c). Citizenship:**
Verition Fund Management LLC is a Delaware limited liability company. Nicholas Maounis is a citizen of the United States.

**Item 2(d). Title of Class of Securities:**
Class A Ordinary shares, par value $0.0001 per share

**Item 2(e). CUSIP Number:**
G87890128

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [x] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [x] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

As of June 30, 2025, the number of Class A Ordinary Shares the Reporting Persons may be deemed to beneficially own equals 1,030,188 Class A Ordinary Shares held by Verition Multi-Strategy Master Fund Ltd.
The amount beneficially owned by each Reporting Person excludes Class A Ordinary Shares underlying Unit Rights held by Verition Multi-Strategy Master Fund Ltd. that the Reporting Persons are entitled to receive only upon consummation of the Issuer's initial business combination, because the Reporting Persons do not have the right to acquire beneficial ownership of such Class A Ordinary Shares within 60 days.

**(b) Percent of class:**

As of June 30, 2025, the number of Class A Ordinary Shares the Reporting Persons may be deemed to beneficially own constitutes approximately 5.03% of the Class A Ordinary Shares outstanding. This percentage is based on 20,487,500 Class A Ordinary Shares outstanding as of June 30, 2025, as reported in the Issuer's quarterly report on Form 10-Q filed with the Securities and Exchange Commission on June 30, 2025.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

0

**(ii) Shared power to vote or to direct the vote:**

1,030,188

**(iii) Sole power to dispose or to direct the disposition of:**

0

**(iv) Shared power to dispose or to direct the disposition of:**

1,030,188

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Verition Multi-Strategy Master Fund Ltd. is known to have the right to receive dividends from, and proceeds from the sale of, the Class A Ordinary Shares covered by this Statement that may be deemed to be beneficially owned by the Reporting Persons.

**Item 7. Identification and Classification of the Subsidiary**

See disclosure in Item 2 hereof.

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

### 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.

**Verition Fund Management LLC**

**Date:** 08/14/2025

**By:** /s/ William Anderson

**Name & Title:** William Anderson, CFO

**Maounis Nicholas Matthew**

**Date:** 08/14/2025

**By:** /s/ Nicholas Maounis

**Name & Title:** Nicholas Maounis