CURIS, INC.: Nantahala Capital Partners LP reported beneficial ownership of 2,944,000 shares of Common Stock as of March 31, 2026. This holding represents 6.98% of the class, based on 39,978,693 shares outstanding as of March 27, 2026. The reported total includes 2,208,000 shares exercisable within sixty days.
Positive
None.
Negative
None.
Insights
Large passive stake with exercisable instruments disclosed by an institutional holder.
The filing shows Nantahala Capital Partners LP holds 2,944,000 shares (6.98% of the class) using shared voting and dispositive power. The position combines currently held shares and options exercisable within sixty days (2,208,000).
Whether this changes corporate control depends on future exercises and any acquisition activity; subsequent filings would show conversions or sales.
Key Figures
Beneficially owned:2,944,000 sharesPercent of class:6.98%Shares outstanding:39,978,693 shares+1 more
4 metrics
Beneficially owned2,944,000 sharesas of March 31, 2026
Percent of class6.98%based on 39,978,693 shares outstanding as of March 27, 2026
Shares outstanding39,978,693 sharesas of March 27, 2026 (used for percent calculation)
Exercisable within 60 days2,208,000 sharesincluded in the 2,944,000 reported beneficial shares
Key Terms
beneficial owner, shared dispositive power, exercisable within sixty days, CUSIP
4 terms
beneficial ownerregulatory
"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 dispositive powerregulatory
"Shared Dispositive Power 2,944,000.00"
exercisable within sixty daysmarket
"includes 2,208,000 Shares which may be acquired by the Reporting Persons within sixty days"
CUSIPtechnical
"CUSIP Number(s): 231269309"
A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What stake does Nantahala Capital report in CURIS (CRIS)?
Nantahala reports beneficial ownership of 2,944,000 shares, equal to 6.98% of the class. This figure includes 2,208,000 shares that are exercisable within sixty days, per the filing.
How many CURIS shares outstanding did the filing use to calculate the 6.98%?
The percentage is based on 39,978,693 shares outstanding reported as of March 27, 2026. That outstanding count was provided in the filing and used to compute 6.98%.
Does Nantahala have voting or dispositive power over the reported CURIS shares?
Yes. The filing states Nantahala has shared voting power and shared dispositive power for 2,944,000 shares, and no sole voting or dispositive power is listed.
How many of the reported CURIS shares are exercisable within sixty days?
The filing specifies 2,208,000 shares are exercisable by the reporting persons within sixty days, and these are included in the 2,944,000 shares reported as beneficially owned.
Who signed the Schedule 13G on behalf of Nantahala Capital Partners?
The filing is signed by Taki Vasilakis, Chief Compliance Officer, and managers Wilmot B. Harkey and Daniel Mack of Nantahala Capital Management, LLC, dated April 7, 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 PARTNERS LIMITED PARTNERSHIP
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
2,944,000.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
2,944,000.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,944,000.00
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)
6.978 %
12
Type of Reporting Person (See Instructions)
PN
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:
NANTAHALA CAPITAL PARTNERS LIMITED PARTNERSHIP ("Nantahala")
(b)
Address or principal business office or, if none, residence:
130 Main St. 2nd Floor, New Canaan, CT 06840
(c)
Citizenship:
Nantahala is a Massachusetts limited partnership.
(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 2,944,000 Shares. The 2,944,000 Shares includes 2,208,000 Shares which may be acquired by the Reporting Persons within sixty days through the exercise of securities.
(b)
Percent of class:
As of March 31,2026 each of the Reporting Persons may be deemed to be the beneficial owner of 6.98% of the total number of Shares outstanding, based on 39,978,693 shares outstanding received from the issuer on March 27, 2026 10-K in addition to 2,208,000 Shares which may be acquired by the Reporting Persons within sixty days through the exercise of securities.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
0
(ii) Shared power to vote or to direct the vote:
2,944,000
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
2,944,000
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.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
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 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.
NANTAHALA CAPITAL PARTNERS LIMITED PARTNERSHIP
Signature:
/s/ Taki Vasilakis
Name/Title:
Taki Vasilakis / Chief Compliance Officer Nantahala Capital Management, LLC
Date:
04/07/2026
Signature:
/s/ Wilmot B. Harkey
Name/Title:
Wilmot B. Harkey / Manager Nantahala Capital Management, LLC
Date:
04/07/2026
Signature:
/s/ Daniel Mack
Name/Title:
Daniel Mack / Manager Nantahala Capital Management, LLC
