Curis, Inc. reported that Nantahala Capital Management, LLC and its managers Wilmot B. Harkey and Daniel Mack may be deemed beneficial owners of 4,215,165 shares of Curis common stock as of March 31, 2026.
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Curis, Inc. reported that Nantahala Capital Management, LLC and its managers Wilmot B. Harkey and Daniel Mack may be deemed beneficial owners of 4,215,165 shares of Curis common stock as of March 31, 2026. The reported stake represents 9.99% of the outstanding class based on 39,978,693 shares outstanding reported in the issuer's Form 10-K filed March 24, 2026. The 4,215,165 shares include 2,215,165 shares that may be acquired within sixty days through the exercise of warrants. Nantahala and each manager report shared voting and dispositive power for the 4,215,165 shares; no sole voting or dispositive power is reported.
Key Figures
Shares beneficially owned:4,215,165 sharesPercent of class:9.99%Warrants exercisable:2,215,165 shares+1 more
4 metrics
Shares beneficially owned4,215,165 sharesAs of March 31, 2026 (reported in Schedule 13G)
Percent of class9.99%Based on 39,978,693 shares outstanding from issuer Form 10-K filed March 24, 2026
Warrants exercisable2,215,165 sharesMay be acquired within sixty days through exercise of warrants (included in the 4,215,165 total)
Shares outstanding (context)39,978,693 sharesShares outstanding reported in issuer Form 10-K filed March 24, 2026
"As of March 31, 2026, Nantahala may be deemed to be the beneficial owner"
A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.
shared voting powerregulatory
"Shared Voting Power 4,215,165.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
warrants exercisablefinancial
"includes 2,215,165 Shares which may be acquired by the Reporting Persons within sixty days through the exercise of warrants"
Schedule 13Gregulatory
"Item 1. Name of issuer: CURIS, INC."
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What stake does Nantahala report in CURIS?
Nantahala reports beneficial ownership of 4,215,165 shares, equal to 9.99% of the class based on 39,978,693 shares outstanding from the issuer's Form 10-K filed March 24, 2026.
Do the filing parties have voting control over the CURIS shares?
The filing shows shared voting power and shared dispositive power for 4,215,165 shares; the Reporting Persons report 0 sole voting and 0 sole dispositive power over those shares.
How many of the reported shares are exercisable via warrants?
The disclosure states that the 4,215,165 shares include 2,215,165 shares that may be acquired within sixty days through the exercise of warrants, per Item 4(a) of the filing.
Which entities have the right to receive proceeds or dividends for the reported shares?
The filing identifies funds advised by Nantahala with those rights, including Nantahala Capital Partners Limited Partnership and Blackwell Partners LLC - Series A, each noted under Item 6.
Who signed the Schedule 13G for CURIS?
The Schedule 13G is signed by Taki Vasilakis as Chief Compliance Officer and by managers Wilmot B. Harkey and Daniel Mack, with signatures dated 04/24/2026.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
CURIS, INC.
(Name of Issuer)
Common Stock, Par Value $0.01 per share
(Title of Class of Securities)
231269309
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
231269309
1
Names of Reporting Persons
Nantahala Capital Management, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
MASSACHUSETTS
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
4,215,165.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
4,215,165.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
4,215,165.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.99 %
12
Type of Reporting Person (See Instructions)
IA, HC
Comment for Type of Reporting Person: Explanatory Note: This filing replaces the Schedule 13G/A filed on April 7, 2026 which was mistakenly identified as Amendment No. 2. The reporting persons had not previously filed a Schedule 13G with respect to CURIS, INC.
SCHEDULE 13G
CUSIP Number(s):
231269309
1
Names of Reporting Persons
Wilmot B. Harkey
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
4,215,165.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
4,215,165.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
4,215,165.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.99 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
231269309
1
Names of Reporting Persons
Daniel Mack
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
4,215,165.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
4,215,165.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
4,215,165.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.99 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
CURIS, INC.
(b)
Address of issuer's principal executive offices:
128 Spring Street, Building C - Suite 500, Lexington, MA 02421
Item 2.
(a)
Name of person filing:
(1) Nantahala Capital Management, LLC ("Nantahala")
(2) Wilmot B. Harkey
(3) Daniel Mack (together the "Reporting Persons")
(b)
Address or principal business office or, if none, residence:
130 Main St. 2nd Floor, New Canaan, CT 06840
(c)
Citizenship:
(1) Nantahala is a Massachusetts limited liability company. (2) Each of Messrs. Harkey and Mack is a citizen of the United States of America.
(d)
Title of class of securities:
Common Stock, Par Value $0.01 per share
(e)
CUSIP Number(s):
231269309
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
As of March 31, 2026, Nantahala may be deemed to be the beneficial owner of 4,215,165 Shares held by funds and separately managed accounts under its control, and as the managing members of Nantahala, each of Messrs. Harkey and Mack may be deemed to be a beneficial owner of those Shares
The 4,215,165 Shares includes 2,215,165 Shares which may be acquired by the Reporting Persons within sixty days through the exercise of warrants
(b)
Percent of class:
As of March 31, 2026, each of the Reporting Persons may be deemed to be the beneficial owner of the following percentage of the total number of Shares outstanding based on 39,978,693 shares outstanding received from the issuer on Form 10-K filed on March 24, 2026:
(1) Nantahala Capital Management, LLC ("Nantahala") : 9.99%
(2) Wilmot B. Harkey: 9.99%
(3) Daniel Mack: 9.99%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
(1) Nantahala Capital Management, LLC ("Nantahala") : 0 Shares.
(2) Wilmot B. Harkey: 0 Shares.
(3) Daniel Mack: 0 Shares.
(ii) Shared power to vote or to direct the vote:
(1) Nantahala Capital Management, LLC ("Nantahala") : 4,215,165 Shares.
(2) Wilmot B. Harkey: 4,215,165 Shares.
(3) Daniel Mack: 4,215,165 Shares.
(iii) Sole power to dispose or to direct the disposition of:
(1) Nantahala Capital Management, LLC ("Nantahala") : 0 Shares.
(2) Wilmot B. Harkey: 0 Shares.
(3) Daniel Mack: 0 Shares.
(iv) Shared power to dispose or to direct the disposition of:
(1) Nantahala Capital Management, LLC ("Nantahala") : 4,215,165 Shares.
(2) Wilmot B. Harkey: 4,215,165 Shares.
(3) Daniel Mack: 4,215,165 Shares.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
NANTAHALA CAPITAL PARTNERS LIMITED PARTNERSHIP, a fund advised by Nantahala, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of more than five percent of the outstanding shares of common stock beneficially owned by Nantahala reported herein. BLACKWELL PARTNERS LLC - SERIES A, a fund advised by Nantahala, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of more than five percent of the outstanding shares of common stock beneficially owned by Nantahala reported herein.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
Each of Messrs. Harkey and Mack is filing this Schedule 13G as a control person in respect of shares beneficially owned by Nantahala, an investment adviser as described in ss. 240.13d-1(b)(1)(ii)(E). See Item 4(a).
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable 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.
