Comparable stake leader
Nantahala Capital Management, LLC
SEC ownership of CURIS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001108205.
Disclosed value leader
Stonepine Capital Management, LLC
Comparable rows
42/50
Latest evidence
31 Mar 2026
- Public ticker
- CRIS on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Nantahala Capital Management, LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
42 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Nantahala Capital Management, LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001108205
- Issuer location
- Lexington, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of CURIS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Nantahala Capital Managem...
Disclosed value leader
Stonepine Capital Managem...
Comparable rows
42/50
Latest evidence
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 10%
8 rows are not safely comparable across share classes.
13D/G row: Nantahala Capital Management, LLC
Showing 1-8 of 50 holder rows.
Quick read
Nantahala Capital Management, LLC leads the comparable SEC ownership view at 10%.
42 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Nantahala Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
Nantahala Capital Management, LLC
10%
Stonepine Capital Management, LLC
9.9%
Thomas A. Satterfield Jr.
9.9%
Bleichroeder LP
9.9%
Nantahala Capital Partners Limite...
7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Nantahala Capital Management, LLC |
13D/G
13F
Company
|
10%
|
$2,306,960
4,215,165 shares
|
$0 | 31 Mar 2026 |
| Stonepine Capital Management, LLC |
13D/G
13F
Company
|
9.9%
|
$4,468,851
4,025,992 shares
|
$0 | 17 Mar 2026 |
| Thomas A. Satterfield Jr. |
13D/G
|
9.9%
|
$2,176,872
3,957,950 shares
|
+$1,607,203 | 31 Mar 2026 |
| Bleichroeder LP |
13F
13D/G
Company
|
9.9%
from 13D/G
|
$2,081,015
3,802,329 shares
|
— | 31 Mar 2026 |
| Nantahala Capital Partners Limited Partnership |
13D/G
|
7%
|
$2,973,440
2,944,000 shares
|
$0 | 31 Mar 2026 |
| ARMISTICE CAPITAL, LLC |
13D/G
|
5%
|
$373,468
679,033 shares
|
-$361,814 | 31 Mar 2026 |
| M28 Capital Management LP |
13D/G
13F
Company
|
4.8%
|
$616,198
620,167 shares
|
$0 | 23 Jan 2026 |
| MAVERICK CAPITAL LTD |
13D/G
13F
Company
|
0.4%
|
$82,260
49,554 shares
|
-$1,048,833 | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$5,487.
Buys
$5,487
Insiders: 1
Sells
$0
Insiders: 0
Net
+$5,487
Shares: +10,000
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 10,000
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 10,000 | 0 | $5,487 | $0 | +$5,487 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to CURIS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
William Steinkrauss
Net 12M change
+$5,487
Latest report
31 Mar 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| William Steinkrauss | Chief Financial Officer | $4,183,200 | Mixed | 29 Jan 2022 | ||
| Robert Martell | Head of Research & Development | $4,067,000 | Mixed | 20 Jan 2023 | ||
| James E. Dentzer | President & CEO, Director | $1,291,890 | Mixed | 20 Mar 2026 | ||
| Lori Anne Kunkel | Director | $987,700 | Mixed | 31 Jan 2022 | ||
| Ahmed Hamdy MD | Cmo | $570,000 | Mixed | 20 Mar 2026 | ||
| Diantha Duvall | Cfo | $508,804 | Mixed | 20 Mar 2026 | ||
| Jonathan B. Zung | Cdo | $496,550 | Mixed | 20 Mar 2026 | ||
| Marc Rubin | Director | $76,271 | Mixed | 20 Mar 2026 | ||
| Kenneth I. Kaitin | Director | $51,331 | +$5,487 | +12% | Mixed | 31 Mar 2026 |
| Anne Elizabeth Borgman | Director | $45,072 | Mixed | 20 May 2025 | ||
| John Hohneker | Director | $45,072 | Mixed | 20 May 2025 | ||
| Martyn D. Greenacre | Director | $45,072 | Mixed | 20 May 2025 |
Recent insider transactions for CURIS INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Kenneth I. Kaitin | CRIS | Common Stock | Purchase | 710.7% | $5,487 | $0.5487 | 10,000 | 11,407 | 31 Mar 2026 | Direct |
| Jonathan B. Zung | CRIS | Common Stock | Conversion of derivative security | 66,667 | 66,667 | 20 Mar 2026 | Direct | |||
| Jonathan B. Zung | CRIS | Series B Convertible Preferred Stock | Conversion of derivative security | -100% | -50 | 0 | 20 Mar 2026 | Direct | ||
| Ahmed Hamdy MD | CRIS | Common Stock | Conversion of derivative security | 66,667 | 66,667 | 20 Mar 2026 | Direct | |||
| Ahmed Hamdy MD | CRIS | Series B Convertible Preferred Stock | Conversion of derivative security | -100% | -50 | 0 | 20 Mar 2026 | Direct | ||
| Diantha Duvall | CRIS | Common Stock | Conversion of derivative security | 603.8% | 66,666 | 77,707 | 20 Mar 2026 | Direct | ||
| Diantha Duvall | CRIS | Series B Convertible Preferred Stock | Conversion of derivative security | -100% | -50 | 0 | 20 Mar 2026 | Direct | ||
| James E. Dentzer | CRIS | Common Stock | Conversion of derivative security | 866% | 133,333 | 148,730 | 20 Mar 2026 | Direct | ||
| James E. Dentzer | CRIS | Series B Convertible Preferred Stock | Conversion of derivative security | -100% | -100 | 0 | 20 Mar 2026 | Direct | ||
| Marc Rubin | CRIS | Common Stock | Conversion of derivative security | 1850.6% | 26,667 | 28,108 | 20 Mar 2026 | Direct | ||
| Marc Rubin | CRIS | Series B Convertible Preferred Stock | Conversion of derivative security | -100% | -20 | 0 | 20 Mar 2026 | Direct | ||
| Jonathan B. Zung | CRIS | Series C Warrant (right to buy) | Award | 66,667 | 66,667 | 17 Mar 2026 | Direct | |||
| Jonathan B. Zung | CRIS | Series B Warrant (right to buy) | Award | 66,667 | 66,667 | 17 Mar 2026 | Direct | |||
| Jonathan B. Zung | CRIS | Series A Warrant (right to buy) | Award | 66,667 | 66,667 | 17 Mar 2026 | Direct | |||
| Jonathan B. Zung | CRIS | Series B Convertible Preferred Stock | Award | 50 | 50 | 17 Mar 2026 | Direct | |||
| Ahmed Hamdy MD | CRIS | Series C Warrant (right to buy) | Award | 66,667 | 66,667 | 17 Mar 2026 | Direct | |||
| Ahmed Hamdy MD | CRIS | Series B Warrant (right to buy) | Award | 66,667 | 66,667 | 17 Mar 2026 | Direct | |||
| Ahmed Hamdy MD | CRIS | Series A Warrant (right to buy) | Award | 66,667 | 66,667 | 17 Mar 2026 | Direct | |||
| Ahmed Hamdy MD | CRIS | Series B Convertible Preferred Stock | Award | 50 | 50 | 17 Mar 2026 | Direct | |||
| Diantha Duvall | CRIS | Series C Warrant (right to buy) | Award | 66,666 | 66,666 | 17 Mar 2026 | Direct | |||
| Diantha Duvall | CRIS | Series B Warrant (right to buy) | Award | 66,666 | 66,666 | 17 Mar 2026 | Direct | |||
| Diantha Duvall | CRIS | Series A Warrant (right to buy) | Award | 66,666 | 66,666 | 17 Mar 2026 | Direct | |||
| Diantha Duvall | CRIS | Series B Convertible Preferred Stock | Award | 50 | 50 | 17 Mar 2026 | Direct | |||
| James E. Dentzer | CRIS | Series C Warrant (right to buy) | Award | 133,333 | 133,333 | 17 Mar 2026 | Direct | |||
| James E. Dentzer | CRIS | Series B Warrant (right to buy) | Award | 133,333 | 133,333 | 17 Mar 2026 | Direct | |||
| James E. Dentzer | CRIS | Series A Warrant (right to buy) | Award | 133,333 | 133,333 | 17 Mar 2026 | Direct | |||
| James E. Dentzer | CRIS | Series B Convertible Preferred Stock | Award | 100 | 100 | 17 Mar 2026 | Direct | |||
| Marc Rubin | CRIS | Series C Warrant (right to buy) | Award | 26,667 | 26,667 | 17 Mar 2026 | Direct | |||
| Marc Rubin | CRIS | Series B Warrant (right to buy) | Award | 26,667 | 26,667 | 17 Mar 2026 | Direct | |||
| Marc Rubin | CRIS | Series A Warrant (right to buy) | Award | 26,667 | 26,667 | 17 Mar 2026 | Direct | |||
| Marc Rubin | CRIS | Series B Convertible Preferred Stock | Award | 20 | 20 | 17 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.