# EDGAR Filing Document

**Accession Number:** 0001446847
**File Stem:** 0001104659-26-065140
**Filing Date:** 2026-5
**Character Count:** 6033
**Document Hash:** 08d9b23e3c2b6b0d66b64e011cf84e1e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-065140.hdr.sgml**: 20260521

**ACCESSION NUMBER**: 0001104659-26-065140

**CONFORMED SUBMISSION TYPE**: 8-K/A

**PUBLIC DOCUMENT COUNT**: 11

**CONFORMED PERIOD OF REPORT**: 20260508

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**FILED AS OF DATE**: 20260521

**DATE AS OF CHANGE**: 20260521

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** IRONWOOD PHARMACEUTICALS INC
- **CENTRAL INDEX KEY:** 0001446847
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 043404176
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34620
- **FILM NUMBER:** 261008352

**BUSINESS ADDRESS:**
- **STREET 1:** 100 SUMMER STREET, SUITE 2300
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02110
- **BUSINESS PHONE:** 617-621-7722

**MAIL ADDRESS:**
- **STREET 1:** 100 SUMMER STREET, SUITE 2300
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02110

?xml version='1.0' encoding='ASCII'?

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K/A**

**Amendment No. 1**

**Current Report Pursuant to**

**Section 13 or 15(d) of the**

**Securities Exchange Act of 1934**

Date of Report (Date of Earliest Event Reported):

May 8, 2026

**IRONWOOD PHARMACEUTICALS, INC.**

*(Exact name of registrant as specified in its charter)*

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| | | |
|:---|:---|:---|
| **Delaware** | **001-34620** | **04-3404176** |
| *(State or other jurisdiction* | *(Commission File Number)* | *(I.R.S. Employer* |
| *of incorporation)* |  | *Identification Number)* |

---

---

| | |
|:---|:---|
| **100 Summer Street** **, Suite 2300** |  |
| **Boston** **, Massachusetts** | **02110** |
| *(Address of principal* | *(Zip code)* |
| *executive offices)* |  |

---

**(617) 621-7722**

*(Registrant's telephone number,*

*including area code)*

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

◻ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

◻ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

◻ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

◻ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol(s) | Name of each exchange on which<br> registered |
| Class A common stock, $0.001 par value | IRWD | Nasdaq Global Select Market |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ◻

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

**Explanatory Note**

This Current Report on Form 8-K/A is being filed as an amendment (this "Amendment No. 1") to the Current Report on Form 8-K filed by Ironwood Pharmaceuticals, Inc. (the "Company") with the Securities and Exchange Commission on May 13, 2026 (the "Original Report"). In the Original Report, the Company disclosed, among other events, the appointment of Ronald Silver, the Company's Senior Vice President, Corporate Controller and Chief Accounting Officer, as the Company's interim chief financial officer and principal financial officer, effective May 15, 2026. This Amendment No. 1 is being filed to provide a description of certain compensation arrangements approved by the Compensation and HR Committee (the "Committee") of the board of directors of the Company on May 19, 2026 in connection with Mr. Silver's new role as interim chief financial officer and principal financial officer. Except as set forth herein, this Amendment No. 1 does not amend, modify or update the disclosure contained in the Original Report.

**Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.**

On May 19, 2026, in connection with Mr. Silver's new role as the Company's interim chief financial officer and principal financial officer, the Committee approved a monthly interim assignment fee of $12,250 (the "Interim CFO Assignment Fee") for Mr. Silver. Mr. Silver's Interim CFO Assignment Fee will remain in place until the earlier of the Company's appointment of a chief financial officer or the termination of the interim assignment for any other reason. In addition, on May 19, 2026, Mr. Silver received a grant of 25,000 restricted stock units ("RSUs") representing the right to receive shares of the Company's Class A common stock upon vesting of such awards granted under the Company's 2019 Amended and Restated Equity Incentive Plan. The RSUs will vest over two years as to 50% of the RSUs on each approximate anniversary of the date of grant.

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
|  | **Ironwood Pharmaceuticals, Inc.** | **Ironwood Pharmaceuticals, Inc.** |
| Dated: May 21, 2026 | By: | /s/ John Minardo |
|  |  | Name: John Minardo |
|  |  | Title: Senior Vice President, Chief Legal Officer and Secretary |

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