# EDGAR Filing Document

**Accession Number:** 0001061630
**File Stem:** 0001193125-25-246900
**Filing Date:** 2025-10
**Character Count:** 10783
**Document Hash:** 80e8582b1e0db1babd83307c17e7480c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-246900.hdr.sgml**: 20251022

**ACCESSION NUMBER**: 0001193125-25-246900

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20251022

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251022

**DATE AS OF CHANGE**: 20251022

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BLACKSTONE MORTGAGE TRUST, INC.
- **CENTRAL INDEX KEY:** 0001061630
- **STANDARD INDUSTRIAL CLASSIFICATION:** REAL ESTATE INVESTMENT TRUSTS [6798]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 946181186
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14788
- **FILM NUMBER:** 251410574

**BUSINESS ADDRESS:**
- **STREET 1:** 345 PARK AVENUE
- **STREET 2:** 24TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10154
- **BUSINESS PHONE:** 2126550220

**MAIL ADDRESS:**
- **STREET 1:** 345 PARK AVENUE
- **STREET 2:** 24TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10154

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CAPITAL TRUST INC
- **DATE OF NAME CHANGE:** 19980512

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 OR 15(d) of The

#### Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported): October 22, 2025

## Blackstone Mortgage Trust, Inc.

#### (Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Maryland** | **1-14788** | **94-6181186** |
| **(State or Other**<br> **Jurisdiction of Incorporation)** | **(Commission**<br> **File Number)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

#### 345 Park Avenue, 24<sup>th</sup> Floor

#### New York, New York 10154

#### (Address of Principal Executive Offices) (Zip Code)

#### Registrant's telephone number, including area code: (212) 655-0220

#### Not Applicable

#### (Former Name or Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange<br>on which registered** |
| Class A common stock, par value $0.01 per share | BXMT | New York Stock Exchange |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

---

| | |
|:---|:---|
| **Item 5.02** | **Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.**  |

---

Ms. Hsu has over 25 years of global investment experience across fixed income, real estate, private credit and structured products, as well as deep public and private market expertise. Most recently, she served as Head of Private Debt and a member of the Investment Office leadership team at California Public Employees' Retirement System ("CalPERS"), the nation's largest defined-benefit public pension fund, until her retirement in July 2024. During her over 20 years at CalPERS, Ms. Hsu previously held several other senior roles, including Managing Investment Director and Head of Opportunistic Strategies, where she launched the commercial real estate lending portfolio. Earlier, as a Portfolio Manager for CalPERS' Global Fixed Income strategy, she led CalPERS' effort in participating in the Term Asset-Backed Securities Loan Facility during the great financial crisis, and subsequently built the collateralized loan obligation program. Ms. Hsu has served as a member of the Board of Directors of Antares Private Credit Fund since June 2025. Ms. Hsu received a Bachelor of Laws from National Taiwan University and practiced law with a focus on banking, securities and corporate finance. She also holds a Master of Business Administration from the Wharton School at the University of Pennsylvania and is a Fulbright Scholar.

The selection of Ms. Hsu to serve as a director of the Company was not pursuant to any arrangement or understanding with any other person. There are no family relationships between Ms. Hsu and any director or executive officer of the Company and there are no transactions between Ms. Hsu and the Company that would be required to be reported under Item 404(a) of Regulation S-K.

For her service as a director, Ms. Hsu will be entitled to receive the compensation for non-employee directors described under the heading "[Executive Compensation—Non-Employee Director Compensation](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001061630/000119312525107470/d853189ddef14a.htm#toc853189_5)" in the Company's definitive proxy statement on Schedule 14A relating to the Company's 2025 annual meeting of stockholders filed with the Securities and Exchange Commission on April 30, 2025, which description is incorporated herein by reference, as amended or supplemented by the Board.

---

| | |
|:---|:---|
| **Item 7.01** | **Regulation FD Disclosure.**  |

---

On October 22, 2025, the Company issued a press release announcing the election of Ms. Hsu to serve as a director. The press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

---

| | |
|:---|:---|
| **Item 9.01** | **Financial Statements and Exhibits.**  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Exhibits

---

| | |
|:---|:---|
| Exhibit<br>No. | Description |
| 99.1 | [Press Release of Blackstone Mortgage Trust, Inc. dated October 22, 2025.](d79126dex991.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | BLACKSTONE MORTGAGE TRUST, INC. | BLACKSTONE MORTGAGE TRUST, INC. |
| Date: October 22, 2025 |  |  |
|  | By: | /s/ Scott Mathias |
|  | Name: | Scott Mathias |
|  | Title: | Chief Compliance Officer and Secretary |

---

## Exhibit 99.1

**Exhibit 99.1** 

**Jean Hsu Appointed to the Board of Directors of Blackstone Mortgage Trust** 

October 22, 2025

NEW YORK – Blackstone Mortgage Trust, Inc. (NYSE: BXMT) announced today that seasoned institutional investor and industry leader Jean Hsu has been appointed to its Board of Directors.

Ms. Hsu brings over 25 years of global investment experience across fixed income, real estate, private credit and structured products to the BXMT Board, as well as deep public and private market expertise. Most recently, she served as Head of Private Debt and a member of the Investment Office leadership team at California Public Employees' Retirement System (CalPERS), the nation's largest defined-benefit public pension fund, until her retirement in 2024. At CalPERS, Ms. Hsu previously held several other senior roles, including Managing Investment Director and Head of Opportunistic Strategies, where she launched the commercial real estate lending portfolio. Earlier, as a Portfolio Manager for CalPERS' Global Fixed Income strategy, she led CalPERS' effort in participating in the Term Asset-Backed Securities Loan Facility (TALF) during the great financial crisis, and subsequently built the collateralized loan obligation (CLO) program.

Tim Johnson, Chair of the Board of BXMT, said: "We are thrilled to welcome Jean to BXMT's Board of Directors. Over her distinguished career, she has demonstrated a proven track record of strategic investment, leadership and innovation that will undoubtedly benefit our shareholders and continue to support BXMT's strong forward trajectory."

Ms. Hsu said: "I am honored to be joining the Board of BXMT at this exciting time in real estate credit. I look forward to working alongside the other deeply experienced Board members and best-in-class management team to deliver strong results for our investors."

Ms. Hsu also serves as a member of the Board of Directors of Antares Private Credit Fund. She received a Bachelor of Laws from National Taiwan University and practiced law with a focus on banking, securities and corporate finance. She also holds a Master of Business Administration from the Wharton School at the University of Pennsylvania and is a Fulbright Scholar.

**About Blackstone Mortgage Trust** 

Blackstone Mortgage Trust (NYSE: BXMT) is a real estate finance company that originates, acquires and manages senior loans and other debt or credit-oriented investments collateralized by or relating to commercial real estate in North America, Europe, and Australia. Our investment objective is to preserve and protect shareholder capital while producing attractive risk-adjusted returns primarily through dividends generated from current income. Our portfolio is composed primarily of loans secured by high- quality, institutional assets in major markets, sponsored by experienced, well-capitalized real estate investment owners and operators. These loans are financed in a variety of ways, depending on our view of the most prudent strategy available for each of our investments. We are externally managed by BXMT Advisors L.L.C., a subsidiary of Blackstone. Further information is available at www.bxmt.com.

**Contacts** 

Blackstone

+1 (212) 583-5263

PressInquiries@Blackstone.com