Claros Mortgage CEO buys 220K shares at $1.59

Claros Mortgage Trust’s CEO and Chairman reported open-market purchases totaling 220,603 CMTG shares around $1.59 per share over two days.

Rhea-AI Filing Summary

Claros Mortgage Trust, Inc. (CMTG) reported that CEO and Chairman Richard Mack purchased common stock in two open-market or private transactions. On September 3, 2026 he bought 200,000 shares at a weighted average price of $1.5924 per share, and on September 4, 2026 he bought 20,603 shares at a weighted average price of $1.5901 per share. Each day’s price reflects multiple trades within disclosed ranges, and no Rule 10b5-1 trading plan is reported for these purchases.

Insider Trade Summary

Net Buyer: 220,603 shares

Net Buy 2 txns

Insider Mack Richard

Role CEO AND CHAIRMAN

Bought 220,603 shs ($351K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F2	20,603	$1.5901	$33K
Purchase	Common Stock F1	200,000	$1.5924	$318K

Holdings After Transaction: Common Stock — 3,110,911 shares (Direct)

Footnotes (2)

1. F1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.5598 to $1.6 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.
2. F2. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.575 to $1.6 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

Key Figures

Shares purchased September 3, 2026: 200,000 shares Weighted average price September 3, 2026: $1.5924 per share Price range September 3, 2026 trades: $1.5598–$1.60 per share +4 more

7 metrics

Shares purchased September 3, 2026 200,000 shares Open-market or private purchases of Claros Mortgage Trust common stock by CEO and Chairman Richard Mack

Weighted average price September 3, 2026 $1.5924 per share Price for the 200,000-share purchase on September 3, 2026, across multiple trades

Price range September 3, 2026 trades $1.5598–$1.60 per share Range of execution prices for the September 3, 2026 purchases, stated in the footnote

Shares purchased September 4, 2026 20,603 shares Open-market or private purchases of Claros Mortgage Trust common stock by Richard Mack

Weighted average price September 4, 2026 $1.5901 per share Price for the 20,603-share purchase on September 4, 2026, across multiple trades

Price range September 4, 2026 trades $1.575–$1.60 per share Range of execution prices for the September 4, 2026 purchases, stated in the footnote

Total shares purchased across both days 220,603 shares Combined net purchases on September 3 and 4, 2026 reported in the filing summary

Key Terms

weighted average price, open market or private transaction

2 terms

weighted average price financial

"The price reported ... is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open market or private transaction financial

"Purchase in open market or private transaction"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did CMTG report for CEO Richard Mack?

Claros Mortgage Trust reported that CEO and Chairman Richard Mack bought 220,603 shares of common stock in two open-market or private transactions on September 3 and 4, 2026 at weighted average prices of about $1.59 per share.

How many CMTG shares did the CEO buy on September 3, 2026?

On September 3, 2026, CEO and Chairman Richard Mack purchased 200,000 shares of Claros Mortgage Trust common stock at a weighted average price of $1.5924 per share in multiple trades within a disclosed price range.

How many CMTG shares did the CEO buy on September 4, 2026?

On September 4, 2026, Richard Mack purchased 20,603 shares of Claros Mortgage Trust common stock at a weighted average price of $1.5901 per share, with the footnote stating the shares were bought in multiple trades within a specified price range.

Were the September 2026 CMTG insider purchases under a Rule 10b5-1 plan?

No. The filing indicates that the Rule 10b5-1 trading plan box is not checked, so no Rule 10b5-1 plan is reported for the September 3 and 4, 2026 purchases of Claros Mortgage Trust stock by Richard Mack.

What price ranges applied to the CEO’s CMTG purchases in September 2026?

For the 200,000 shares bought on September 3, 2026, trades occurred between $1.5598 and $1.60 per share. For the 20,603 shares bought on September 4, 2026, trades occurred between $1.575 and $1.60 per share, with reported prices given as weighted averages.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/08/2026 - 04:45 PM EDT Accepted by SEC EDGAR 09/08/2026 - 04:44 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mack Richard

(Last) (First) (Middle)

C/O MACK REAL ESTATE CREDIT STRATEGIES

60 COLUMBUS CIRCLE, 20TH FLOOR

(Street)

NEW YORK NEW YORK 10023

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Claros Mortgage Trust, Inc. [ CMTG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO AND CHAIRMAN

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/03/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/03/2026		P		200,000	A	$1.5924(1)	3,090,308	D
Common Stock	09/04/2026		P		20,603	A	$1.5901(2)	3,110,911	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.5598 to $1.6 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

2. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.575 to $1.6 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

	/s/ Jeffrey D. Siegel, Attorney-in-Fact for Richard Mack	09/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)