# EDGAR Filing Document

**Accession Number:** 0001609212
**File Stem:** 0001193125-25-156534
**Filing Date:** 2025-7
**Character Count:** 6263
**Document Hash:** 587be168957b20e5a556f5b0d574ab24
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-156534.hdr.sgml**: 20250708

**ACCESSION NUMBER**: 0001193125-25-156534

**CONFORMED SUBMISSION TYPE**: SC TO-I/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250708

**DATE AS OF CHANGE**: 20250708

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMG Pantheon Master Fund, LLC
- **CENTRAL INDEX KEY:** 0001609212

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** SC TO-I/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-89631
- **FILM NUMBER:** 251110390

**BUSINESS ADDRESS:**
- **STREET 1:** 680 WASHINGTON BOULEVARD, SUITE 500
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 877-355-1566

**MAIL ADDRESS:**
- **STREET 1:** 680 WASHINGTON BOULEVARD, SUITE 500
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMG Pantheon Private Equity Master Fund, LLC
- **DATE OF NAME CHANGE:** 20140527
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMG Pantheon Master Fund, LLC
- **CENTRAL INDEX KEY:** 0001609212

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** SC TO-I/A

**BUSINESS ADDRESS:**
- **STREET 1:** 680 WASHINGTON BOULEVARD, SUITE 500
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 877-355-1566

**MAIL ADDRESS:**
- **STREET 1:** 680 WASHINGTON BOULEVARD, SUITE 500
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMG Pantheon Private Equity Master Fund, LLC
- **DATE OF NAME CHANGE:** 20140527

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**WASHINGTON, D.C. 20549** 

**SCHEDULE TO** 

**(Rule 13e-4)** 

**TENDER OFFER STATEMENT PURSUANT TO SECTION 14(D)(1) OR 13(E)(1)** 

**OF THE SECURITIES EXCHANGE ACT OF 1934** 

## AMG Pantheon Master Fund, LLC
**(Name of Issuer)** 

**(Name of Person(s) Filing Statement)** 

**Units of Beneficial Interest** 

**(Title of Class of Securities)** 

**001701101** 

**(CUSIP Number of class of securities)** 

**Mark J. Duggan** 

**c/o AMG Pantheon Master Fund, LLC** 

**AMG Funds LLC** 

**680 Washington Boulevard, Suite 500** 

**Stamford, Connecticut 06901** 

**(877) 355-1566** 

**(Name, Address and Telephone No. of Person Authorized to Receive Notices and Communications on Behalf of the Person(s) Filing Statement)** 

***With a copy to:***

**Gregory C. Davis** 

**Ropes & Gray LLP** 

**Three Embarcadero Center** 

**San Francisco, CA 94111-4006** 

**March 24, 2025** 

**(Date Tender Offer First Published, Sent or Given to Security Holders)** 

☐ Check the box if the filing relates solely to preliminary communications made before commencement of a tender offer.

Check the appropriate boxes below to designate any transactions to which the statement relates:

☐ third-party tender offer subject to Rule 14d-1.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;☒ issuer tender offer subject to Rule 13e-4.

☐ going-private transaction subject to Rule 13e-3.

☐ amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the results of the tender offer: ☒

------

**SCHEDULE TO** 

**Items 1 through 11.** 

This Final Amendment relates to the Tender Offer Statement on Schedule TO (the "Statement") originally filed by AMG Pantheon Master Fund, LLC (the "Fund") on March 24, 2025 relating to the tender offer (the "Offer") by the Fund to repurchase up to 9,343,941 of its outstanding units of beneficial interest ("Units") pursuant to tenders by members of the Fund at a price equal to the net asset value per Unit as of June 30, 2025 on the terms and subject to the conditions set forth in the Offer to Repurchase filed as Exhibit (a)(1)(ii) to the Statement.

This is the Final Amendment to the Statement and is being filed to report the results of the Offer. The following information is furnished pursuant to Rule 13e-4(c)(4):

1. The Offer expired at 11:59 p.m., Eastern Time, on April 24, 2025.

2. No Units were validly tendered and not withdrawn prior to the expiration of the Offer.

**Item 12(b). Filing Fee** 

Filing Fee Exhibit.

------

**SIGNATURE** 

After due 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.

---

| | |
|:---|:---|
| AMG PANTHEON MASTER FUND, LLC | AMG PANTHEON MASTER FUND, LLC |
| By: | /s/ Thomas Disbrow |
| Name: | Thomas Disbrow |
| Title: | Treasurer |

---

Dated: July 8, 2025

------

**EXHIBIT INDEX** 

---

| |
|:---|
| **Exhibit** |
| Filing Fee Exhibit. |

---

## Ex-Filing

EX-Filing Fees

**Calculation of Filing Fee Tables** 

**SC TO-I/A** 

(Form Type)

**AMG Pantheon Master Fund, LLC** 

(Exact Name of Registrant as Specified in its Charter)

<u>Table 1: Transaction Valuation</u> 

---

| | | |
|:---|:---|:---|
|  | **Fee**<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Rate**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Amount of** <br> **Filing Fee** |
| &nbsp;&nbsp;&nbsp; Fees to Be Paid<br>$250324173.17 <sup>(1)</sup> | 0.01531% | $38324.63 <sup>(2)</sup> |
| &nbsp;&nbsp;&nbsp; Fees Previously Paid |  | $38324.63 <sup>(2)</sup> |
| &nbsp;&nbsp;&nbsp; **Total Transaction Valuation**<br>$250324173.17 <sup>(1)</sup> |  |  |
| &nbsp;&nbsp;&nbsp; **Total Fees Due for Filing** |  | $38324.63 |
| &nbsp;&nbsp;&nbsp; **Total Fees Previously Paid** |  | $38324.63 |
| &nbsp;&nbsp;&nbsp; **Total Fee Offsets** |  | $0.00 |
| &nbsp;&nbsp;&nbsp; **Net Fee Due** |  | $0.00 |

---

(1) Calculated as the aggregate maximum purchase price for units of beneficial interest, based upon the estimated
net asset value per unit as of January 31, 2025. The fee of $38,324.63 was paid in connection with the filing of the Schedule TO-I by AMG Pantheon Master Fund, LLC (File No. 005-89631) on March 24, 2025 (the "Schedule TO"). This is the final amendment to the Schedule TO and is being filed to report the results of the offer.

(2) Calculated at $153.10 per $1,000,000.00 of the Transaction Valuation.