Curbline (CURB) CEO Lukes sells 123K shares, shifts 126K into spouse trust

Rhea-AI Filing Summary

Curbline Properties Corp. President & CEO David R. Lukes reported multiple transactions in the company’s common stock. He made open-market sales of 39,749 shares at a weighted average price of $26.799 on March 13, 2026 and 83,663 shares at a weighted average price of $26.829 on March 16, 2026, for total reported sales of 123,412 shares.

Earlier, on February 2, 2026, he completed a bona fide gift of 126,000 shares, which are now held indirectly through the Elizabeth G Lukes 2025 Revocable Trust. After these transactions, he holds 506,597 shares directly and 126,000 shares indirectly, remaining a significant shareholder.

Insights

Insider trading and governance analyst

CEO executed sizable share sales while retaining a large ongoing stake.

David R. Lukes, President & CEO of Curbline Properties Corp., reported open‑market sales totaling 123,412 common shares at weighted average prices around $26.80 in mid‑March 2026. These are discretionary sales, not option exercises or tax withholdings, so they carry more informational weight than mechanistic transactions.

On February 2, 2026, he also made a bona fide gift of 126,000 shares, now held indirectly via the Elizabeth G Lukes 2025 Revocable Trust. That gift mainly shifts ownership from direct to indirect rather than removing exposure to the stock. There are no derivative positions reported as remaining in this filing.

Post‑transaction, Lukes still owns 506,597 shares directly and 126,000 indirectly, indicating he retains substantial exposure despite the net sale. Without data on total shares outstanding or any stated motivation, these trades appear as notable but not necessarily thesis‑changing portfolio movements, and their significance depends on broader context outside this single report.

Insider Trade Summary

Net Seller: 123,412 shares ($3,309,828)

Net Sell 4 txns

Insider Lukes David R

Role President & CEO

Sold 123,412 shs ($3.31M)

Type	Security	Shares	Price	Value
Sale	Common Stock	83,663	$26.829	$2.24M
Sale	Common Stock	39,749	$26.799	$1.07M
Gift	Common Stock	126,000	$0.00	--
Gift	Common Stock	126,000	$0.00	--

Holdings After Transaction: Common Stock — 506,597 shares (Direct); Common Stock — 126,000 shares (Indirect, By Spouse in The Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025)

Footnotes (1)

1. Gift to Spouse resulting in a change of beneficial ownership from direct to indirect of the gifted securities. The price reported in column 4 is a weighted average price.These shares were sold in multiple transactions at prices ranging from $26.75 to $26.89. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.75 to $27.02. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range. Reflects indirect ownership by the Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025, for which Mr. Luke's spouse is the settlor, trustee and beneficiary.

Form 4 Insider Transactions: What Each Field Means →

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^*

Lukes David R

(Last) (First) (Middle)

320 PARK AVENUE

(Street)

NEW YORK NY 10022

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Curbline Properties Corp. [ CURB ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/02/2026

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

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

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

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	02/02/2026		G(1)		126,000	D	$0	630,009	D
Common Stock	03/13/2026		S		39,749	D	$26.799(2)	590,260	D
Common Stock	03/16/2026		S		83,663	D	$26.829(3)	506,597	D
Common Stock	02/02/2026		G(1)		126,000	A	$0	126,000	I	By Spouse in The Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025(4)

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. Gift to Spouse resulting in a change of beneficial ownership from direct to indirect of the gifted securities.

2. The price reported in column 4 is a weighted average price.These shares were sold in multiple transactions at prices ranging from $26.75 to $26.89. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range.

3. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.75 to $27.02. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range.

4. Reflects indirect ownership by the Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025, for which Mr. Luke's spouse is the settlor, trustee and beneficiary.

	/s/ Jennifer Daubenspeck, Attorney-In-Fact	03/17/2026
	** 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.

FAQ

What did Curbline Properties (CURB) CEO David R. Lukes do in this Form 4 filing?

David R. Lukes reported selling 123,412 shares of Curbline Properties common stock in open-market transactions and making a bona fide gift of 126,000 shares to his spouse’s revocable trust, shifting some holdings from direct to indirect ownership while retaining a large position.

How many Curbline Properties (CURB) shares did the CEO sell and at what prices?

The CEO sold 39,749 shares at a weighted average price of $26.799 on March 13, 2026, and 83,663 shares at a weighted average price of $26.829 on March 16, 2026. Both sales were reported as open-market transactions across multiple trades within narrow price ranges.

What is the size and nature of the CEO’s gift in the Curbline (CURB) Form 4?

On February 2, 2026, David R. Lukes made a bona fide gift of 126,000 Curbline Properties shares. Those shares are now held indirectly through the Elizabeth G Lukes 2025 Revocable Trust, for which his spouse is settlor, trustee, and beneficiary, changing how the shares are owned.

How many Curbline Properties (CURB) shares does the CEO own after these transactions?

After the reported sales and gift, David R. Lukes holds 506,597 Curbline Properties shares directly and 126,000 shares indirectly through his spouse’s revocable trust. This indicates he remains a substantial shareholder despite the net reduction in directly held shares from recent open-market sales.

Were the Curbline (CURB) CEO’s share sales under a 10b5-1 trading plan?

The filing describes the CEO’s transactions as open-market sales with weighted average prices but does not state that they were executed under a Rule 10b5-1 trading plan. The sales occurred in multiple trades within specified price ranges, with detailed breakdowns available on request.

Does this Curbline Properties (CURB) Form 4 involve stock options or derivatives?

All reported transactions involve Curbline Properties common stock only. The filing classifies them as non-derivative transactions, and the derivative summary is empty, indicating no option exercises, warrant conversions, or other derivative activities are included in this specific Form 4 report.