field-based and home-office employees, including the relevant general and administrative support functions. We expect to substantially complete the reduction in our workforce in the fourth quarter of 2020.
We and AbbVie were developing MD-7246, a delayed release formulation of linaclotide, as an oral, intestinal, non-opioid, pain-relieving agent for patients with abdominal pain associated with certain GI diseases. In May 2020, we and AbbVie announced top-line data from a Phase II trial evaluating MD-7246 in adult patients with abdominal pain associated with irritable bowel syndrome with diarrhea, or IBS-D. The Phase II trial did not meet its primary or key secondary endpoints. Based on these findings, we and AbbVie are discontinuing the development of MD-7246.
We are also leveraging our leading capabilities in GI to bring additional treatment options to GI patients. This includes our U.S. disease education and promotional agreement with Alnylam Pharmaceuticals, Inc., or Alnylam, for Alnylam’s GIVLAARI® (givosiran), an RNAi therapeutic targeting aminolevulinic acid synthase 1, for the treatment of acute hepatic porphyria.
In January 2020, we and AbbVie entered into settlement agreements with Sandoz Inc. and Teva Pharmaceuticals, USA resolving patent litigation brought in response to the last outstanding abbreviated new drug applications seeking approval to market generic versions of LINZESS prior to the expiration of our and AbbVie’s applicable patents.
We were incorporated in Delaware on January 5, 1998 as Microbia, Inc. On April 7, 2008, we changed our name to Ironwood Pharmaceuticals, Inc. We operate in one reportable business segment—human therapeutics.
To date, we have dedicated a majority of our activities to the research, development and commercialization of linaclotide, as well as to the research and development of our other product candidates. Prior to the year ended December 31, 2019 when we recorded net income for the year of approximately $21.5 million, we incurred net losses in each year since our inception in 1998. For the three and nine months ended September 30, 2020, we recorded net income of approximately $34.4 million and approximately $63.0 million, respectively. As of September 30, 2020, we had an accumulated deficit of approximately $1.5 billion. We are unable to predict the extent of any future losses or guarantee that our company will be able to maintain positive cash flows.
On April 1, 2019, we completed the separation, or the Separation, of our soluble guanylate cyclase, or sGC, business, and certain other assets and liabilities, into a separate, independent publicly traded company, Cyclerion Therapeutics, Inc., or Cyclerion. The Separation was effected by means of a distribution of all of the outstanding shares of common stock, with no par value, of Cyclerion, through a dividend of Cyclerion’s common stock to our stockholders of record as of the close of business on March 19, 2019. The Separation is more fully described in Note 2, Cyclerion Separation, to our condensed consolidated financial statements appearing elsewhere in this Quarterly Report on Form 10-Q.
In August 2019, we issued $200.0 million in 0.75% Convertible Senior Notes due 2024, or the 2024 Convertible Notes, and $200.0 million in 1.50% Convertible Senior Notes due 2026, or the 2026 Convertible Notes. We received net proceeds of approximately $391.0 million from the sale of the 2024 Convertible Notes and the 2026 Convertible Notes, after deducting fees and expenses of approximately $9.0 million.
The proceeds from the issuance of the 2024 Convertible Notes and the 2026 Convertible Notes were used in August 2019 to pay approximately $25.2 million related to the associated capped call transactions, or the Capped Calls, and to repurchase $215.0 million aggregate principal amount of the existing 2.25% Convertible Senior Notes due 2022, or the 2022 Convertible Notes. The proceeds from the issuance of the 2024 Convertible Notes and 2026 Convertible Notes were also used to redeem the outstanding principal balance of the 8.375% Notes due 2026, or the 2026 Notes, in September 2019. We retired the 2026 Notes, which had an outstanding aggregate principal balance of approximately $116.5 million, for a redemption price of approximately $123.0 million. During the year ended December 31, 2019, we recognized a loss on extinguishment of debt of approximately $31.0 million related to the redemption of the 2026 Notes and the partial repurchase of the 2022 Convertible Notes. In connection with the partial repurchase of the 2022 Convertible Notes, we also terminated the respective portion of our existing convertible note hedges transactions, or the Convertible Note Hedges, and the respective portion of our existing warrants, or the Note Hedge Warrants, which we had entered into in June 2015 in connection with our issuance of the 2022 Convertible Notes. These transactions are more fully described in Note 8, Notes Payable, to our condensed consolidated financial statements appearing elsewhere in this Quarterly Report on Form 10-Q.