Siddhartha Chowdhury was named Chief Financial Officer of Willow Tree Capital Corp, succeeding Mark Klingensmith. As of November 6, 2026, Willow Tree Capital Corp has reported one leadership change filing to the SEC under Item 5.02 of Form 8-K, on September 1, 2026, naming 1 appointment and 1 departure (Form 8-K, September 1, 2026).
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Willow Tree Capital Corp reported a change among its directors and officers to the SEC on Form 8-K, Item 5.02, on 2026-09-01. It names 2 people, with 1 appointment and 1 departure. Every row below is cited to the filing it comes from, and this page adds each new change as Willow Tree Capital Corp files it.
Also on the record for Willow Tree Capital Corp
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 1, 2026 | Stake report, Schedule 13G/A, by Liberty Mutual Holding Company Inc. | 15.1% of the class | 5%+ stakes | Source |
| July 9, 2026 | Stake report, Schedule 13G/A, by Liberty Mutual Holding Company Inc. | 15.5% of the class | 5%+ stakes | Source |
| April 1, 2026 | Stake report, Schedule 13G/A, by Liberty Mutual Holding Company Inc. | 15.6% of the class | 5%+ stakes | Source |
| January 6, 2026 | Stake report, Schedule 13G/A, by STRS OHIO | 10.4% of the class | 5%+ stakes | Source |
| January 5, 2026 | Stake report, Schedule 13G/A, by Liberty Mutual Holding Company Inc. | 15.5% of the class | 5%+ stakes | Source |
| November 14, 2025 | Stake report, Schedule 13G/A, by HERSHEY TRUST CO TRUSTEE IN TRUST FOR MILTON HERSHEY SCHOOL | 10.9% of the class | 5%+ stakes | Source |
| October 2, 2025 | Stake report, Schedule 13G/A, by Liberty Mutual Holding Company Inc. | 15.6% of the class | 5%+ stakes | Source |
| August 1, 2025 | Stake report, Schedule 13G/A, by Liberty Mutual Holding Company Inc. | 15.8% of the class | 5%+ stakes | Source |
| July 2, 2025 | Stake report, Schedule 13G/A, by Liberty Mutual Holding Company Inc. | 15.8% of the class | 5%+ stakes | Source |
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More on Willow Tree Capital Corp and the records around it.
Willow Tree Capital Corp elsewhere on the record
- 5%+ stake filings Oct 2026
Companies that share a holder
- Liberty Mutual Holding Company Inc. also filed stake reports on 4 other companies: 5C Lending Partners Corp. (Oct 2026), Office Properties Income Trust (Jul 2026), Sound Point Direct Lending BDC (Jul 2026)
- STRS OHIO also filed stake reports on 6 other companies: Crestline Lending Solutions, LLC (Oct 2026), Stone Point Credit Income Fund (Sep 2026), Audax Private Credit Fund, LLC (Jan 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-09-01 | Out | Chief Financial Officer | 2026-09-01 | 8-K, 2026-09-01 | |
| 2026-09-01 | In | Chief Financial Officer | 8-K, 2026-09-01 |
Who leads Willow Tree Capital Corp, as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Financial Officer: Mark Klingensmith, departure reported, effective 2026-09-01 (filed 2026-09-01). No successor is named in these filings.
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Departing: Mark Klingensmith, Chief Financial Officer, effective 2026-09-01
(b) Departure of Officer On August 31, 2026, Mark Klingensmith notified Willow Tree Capital Corporation (the "Company"), a Maryland corporation that has elected to be regulated as a business development company under the Investment Company Act of 1940, as amended, that he was resigning as Chief Financial Officer and Treasurer of the Company, effective as of September 1, 2026 (the "Departure Date").
Appointed: Siddhartha Chowdhury, Chief Financial Officer
(c) Appointment of Officer On September 1, 2026, the board of directors (the "Board") of the Company appointed Siddhartha Chowdhury, age 51, as Chief Financial Officer and Treasurer of the Company, effective as of the Departure Date, to fill the vacancy created by Mr. Klingensmith's departure.
- - Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
- Mr. Klingensmith's departure was not the result of any disagreement with the Company on any matter relating to the Company's operations, policies or practices.
- Mr. Chowdhury has nearly 25 years of experience in public and private accounting.
- In August 2026, he joined Willow Tree Credit Partners LP, an affiliate of the investment adviser to the Company, as its Chief Financial Officer.
- Prior to that, he served as Executive Vice President at Audax Private Debt, a middle market credit manager, where he worked from 2014 to 2026.
- Mr. Chowdhury holds a Master of Commerce in Accountancy and a Master of Applied Finance from the University of Wollongong and a Bachelor of Commerce in Accountancy from St. Xavier's College, Calcutta, and is licensed as a Certified Public Accountant in both Massachusetts and Australia.
- There are no transactions since the beginning of the Company's last fiscal year, or any currently proposed transaction, in which the Company was or is to be a participant, the amount involved exceeds $120,000, and in which Mr. Chowdhury had, or will have, a direct or indirect material interest.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.