Developer docs
API playgroundTry for free, no card

Search company profiles

Albireo Pharma

Full company profile

uuid0005g9e

Namestring
Albireo Pharma
Legal namestring
Albireo Pharma Inc.
Company typeenum
Private
Founded yearint
2008
Descriptiontext

Albireo Pharma was a US-incorporated biotechnology company (NASDAQ: ALBO; founded 2008) that developed novel bile acid modulators for the treatment of rare cholestatic liver disorders and associated pruritus, including Progressive Familial Intrahepatic Cholestasis (PFIC), Primary Biliary Cholangitis (PBC), Primary Sclerosing Cholangitis (PSC), and biliary atresia. The company's core technology centered on ileal bile acid transporter (IBAT) inhibition, with its lead asset Bylvay (odevixibat) becoming the first approved IBAT inhibitor for treating cholestatic pruritus and PFIC. Bylvay generated approximately €180 million (~$203 million) in 2025 sales, making it the central commercial asset of the company.

Albireo's business model was a traditional specialty biopharma model: it developed and sought regulatory approval for a single differentiated therapy in an underserved rare disease niche, then commercialized it at orphan-drug pricing through a focused commercial organization. Following the March 2023 acquisition by France-based Ipsen for $952 million, Albireo became a wholly-owned subsidiary and its products are now distributed through Ipsen's global pharmaceutical network spanning the Americas, Europe, Asia Pacific, and the Middle East & Africa. The company had 101–250 employees and was led by an executive team including David Chiswell (Executive Chairman) and other CXO-level officers.

Post-acquisition, the Albireo-derived pipeline has been rationalized: two drug candidates (ritivixibat and A2342) were discontinued in 2026, with ritivixibat's phase 2 trial terminated due to recruitment challenges. Bylvay remains the strategic asset, with an ongoing phase 3 trial in biliary atresia as the principal label-expansion lever. Albireo no longer operates as an independent entity, and its market relevance is now expressed through the performance of Bylvay within Ipsen's rare disease portfolio.

Short descriptiontext

Albireo Pharma is a US-based biopharmaceutical company developing novel bile acid modulators, notably the approved IBAT inhibitor Bylvay (odevixibat), for rare cholestatic liver disorders and pruritus. Acquired by Ipsen in 2023 for $952 million, it now operates as a wholly-owned subsidiary.

Operating statusenum
Acquired
Ownership categoryenum
Headcount rangeband
101–250
akta.pro rankint
HeadquartersGothenburg, Sweden
HQ citystring
Gothenburg
HQ countrystring
Sweden
HQ regionstring
Europe
Markets served

Serves global market

Keyword5 values
rare disease therapeutics, bile acid modulators, IBAT inhibitors, cholestatic liver disease drugs, pediatric hepatology
Industry3 codes
1Rare Gastroenterology & Hepatology Disorder Therapies
CodeHLAIAIALPrimaryYes
2Gastroenterology Specialty Pharmaceuticals
CodeHLAIACAEPrimaryNo
3Gastroenterology & Hepatology Pharmaceuticals
CodeHLAIAAAIPrimaryNo
NAICS code1 code
  • Biological Product (except Diagnostic) Manufacturing325414
SIC code1 code
  • Medicinal Chemicals & Botanical Products2833
Product category
Rare Disease Pharmaceuticals
Revenue model1 record
1Bylvay Product Sales
TypeHardware Sales
Description

Sales of Bylvay, the approved IBAT inhibitor, which posted €180 million (approximately $203 million) in 2025 sales, representing the primary revenue stream from Albireo's acquired portfolio.

fiercebiotech.com
Cost components6 values
Technology or R&D, Personnel, Operations, Marketing or Sales, Supply Chain, Infrastructure
GTM typeB2B
B2B
Offering typeHardware or Manufacturing
Hardware or Manufacturing
Brand1 record
1Bylvay
Description

Odevixibat - an approved IBAT inhibitor for the treatment of progressive familial intrahepatic cholestasis (PFIC) and biliary atresia

fiercebiotech.com
Core offering1 text field

Albireo Pharma develops and commercializes novel bile acid modulators, including the approved oral IBAT inhibitor Bylvay (odevixibat), for the treatment of rare cholestatic liver disorders such as progressive familial intrahepatic cholestasis (PFIC) and biliary atresia, as well as associated cholestatic pruritus. Following its 2023 acquisition by Ipsen, Albireo operates as a wholly-owned subsidiary within Ipsen's rare disease division, with Bylvay generating approximately €180 million in 2025 sales.

Differentiator
Functional benefit
Problem solved
Quantifiable outcome1 of 2 values shown
  • €180 million in 2025 sales for Bylvay
+1 more record
Product overview1 text field

Albireo Pharma was a biopharmaceutical company specializing in novel bile acid modulators for treating rare cholestatic liver disorders and pruritus (itching). The company's product portfolio centered around Bylvay, the approved IBAT inhibitor that became the centerpiece of Ipsen's $952 million acquisition of Albireo in 2023. The company also developed earlier-stage candidates including ritivixibat and A2342, which were later discontinued from Ipsen's pipeline following the acquisition.

Product and service1 record
1Bylvay (odevixibat)
CategoryRare disease pharmaceuticals
Description

Bylvay is an approved oral IBAT (ileal bile acid transporter) inhibitor indicated for the treatment of progressive familial intrahepatic cholestasis (PFIC) in patients aged 6 months and older, and is being evaluated in a phase 3 trial for biliary atresia. It is Albireo's flagship commercial product and the centerpiece of Ipsen's 2023 acquisition, generating €180 million (~$203 million) in 2025 sales.

Scale indicator4 records

Each record includes

Type, Value, Description, Source

Partnership1 partner
Strategic tierCoreTypeStrategic or Co-development PartnerAnnounced on2023-03-01
Description

Ipsen acquired Albireo Pharma in March 2023 for $952 million to strengthen its rare diseases portfolio. The acquisition brought Bylvay (approved IBAT inhibitor), ritivixibat, and A2342 pipeline candidates. While ritivixibat and A2342 have since been discontinued, Bylvay remains a key asset with €180 million in 2025 sales and ongoing phase 3 trial in biliary atresia.

Recent move6 records

Each record includes

Date, Type, Title, Description, Source

Expansion highlight4 records

Each record includes

Type, Description

Peers9 records
TypeDirect peer
Description

Mirum is the most direct competitor to Albireo's Bylvay, marketing maralixibat (LIVMARLI) — another approved IBAT inhibitor — for cholestatic pruritus in Alagille syndrome and PFIC, directly overlapping Albireo's mechanism, indications, and prescriber base.

TypeDirect peer
Description

Intercept developed obeticholic acid (Ocaliva) for primary biliary cholangitis (PBC), a cholestatic liver disease also addressed in Albireo's pipeline and patient segments, making it a direct comparator in rare cholestatic disease therapeutics.

TypeDirect peer
Description

Genfit is developing elafibranor for PBC and other cholestatic/gastroenterology indications, overlapping Albireo's specialty gastroenterology and hepatology therapeutic focus.

TypeDirect peer
Description

CymaBay developed seladelpar for PBC, a cholestatic liver disease adjacent to Albireo's rare liver disease portfolio; acquired by Gilead, it represents a comparable specialty hepatology franchise.

TypeDirect peer
Description

Madrigal's resmetirom (Rezdiffra) for MASH/NASH positions it in the specialty hepatology space, sharing the rare/specialty liver disease focus and prescriber base that Albireo's Bylvay targets.

TypeEmerging player
Description

Calliditas is a Sweden-based rare-disease specialty pharma with comparable European roots and a focus on underserved indications, mirroring Albireo's Stockholm/Gothenburg origin and rare-disease strategy.

TypeBroad incumbent
Description

Travere is a broader rare-disease biopharma with products in rare kidney and metabolic indications; its specialty-rare commercial model and rare-disease focus parallel Albireo's positioning under Ipsen.

TypeOthers
Description

Ipsen is Albireo's parent company and acquired the firm in 2023 for $952M to add Bylvay and rare liver disease capabilities to its rare-disease franchise; relevant as the integrated commercial umbrella for Bylvay.

TypeEmerging player
Description

Pliant is developing therapies for liver fibrosis and rare fibrotic diseases, sharing the rare-hepatology therapeutic focus and clinical-stage profile relevant to Albireo's pipeline extensions.

Market position
Strengths4 records

Each record includes

Headline, Details, Source

Competitive moat3 records

Each record includes

Type, Details

Key risks5 records

Each record includes

Headline, Details, Source

Key highlights6 records

Each record includes

Headline, Details, Source

Customer concentration

Classification, Details

Segment1 record

Each record includes

Title, Type, Primary, Description, Pain point addressed, Use case, Source

Ideal customer profile1 record

Each record includes

Profile, Firmographic size, Sales motion, Sales cycle length, Buying structure, Purchase trigger, Buyer persona, Geography, Industry vertical, Primary use case, Description, Pain points, Evidence proof points, Target buyer

Technology focused
Yes
API detail
Has APIbool
No

Docs URL, Description

AI maturity
App detail

Has app

Feature1 record

Each record includes

Title, Differentiator, Description, Source

Core technology
Revenue estimate
Valuation estimate
Number of profiles
No data
No data
Funding overview

Funding stage, Last funding date, Total funding USD

Funding rounds3 records

Each record includes

Round, Amount USD, Date, Pre money valuation, Total investors, Investors, News

Investors3 records

Each record includes

Name, Type, Date of entry, Rounds participated, Website

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Each record includes

Name, Acquisition type, Announced date, Completed date, Status, Website, News

Investment

Each record includes

Name, Round, Announced date, Lead investor, Website, News

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Albireo Pharma

Rare Disease Pharmaceuticalsalbireopharma.com

Albireo Pharma is a US-based biopharmaceutical company developing novel bile acid modulators, notably the approved IBAT inhibitor Bylvay (odevixibat), for rare cholestatic liver disorders and pruritus. Acquired by Ipsen in 2023 for $952 million, it now operates as a wholly-owned subsidiary.

What Albireo Pharma does

Albireo Pharma was a US-incorporated biotechnology company (NASDAQ: ALBO; founded 2008) that developed novel bile acid modulators for the treatment of rare cholestatic liver disorders and associated pruritus, including Progressive Familial Intrahepatic Cholestasis (PFIC), Primary Biliary Cholangitis (PBC), Primary Sclerosing Cholangitis (PSC), and biliary atresia. The company's core technology centered on ileal bile acid transporter (IBAT) inhibition, with its lead asset Bylvay (odevixibat) becoming the first approved IBAT inhibitor for treating cholestatic pruritus and PFIC. Bylvay generated approximately €180 million (~$203 million) in 2025 sales, making it the central commercial asset of the company.

Albireo's business model was a traditional specialty biopharma model: it developed and sought regulatory approval for a single differentiated therapy in an underserved rare disease niche, then commercialized it at orphan-drug pricing through a focused commercial organization. Following the March 2023 acquisition by France-based Ipsen for $952 million, Albireo became a wholly-owned subsidiary and its products are now distributed through Ipsen's global pharmaceutical network spanning the Americas, Europe, Asia Pacific, and the Middle East & Africa. The company had 101–250 employees and was led by an executive team including David Chiswell (Executive Chairman) and other CXO-level officers.

Post-acquisition, the Albireo-derived pipeline has been rationalized: two drug candidates (ritivixibat and A2342) were discontinued in 2026, with ritivixibat's phase 2 trial terminated due to recruitment challenges. Bylvay remains the strategic asset, with an ongoing phase 3 trial in biliary atresia as the principal label-expansion lever. Albireo no longer operates as an independent entity, and its market relevance is now expressed through the performance of Bylvay within Ipsen's rare disease portfolio.

Albireo Pharma firmographics

Firmographics
Name
Albireo Pharma
Legal name
Albireo Pharma Inc.
Website
https://albireopharma.com
Company type
Private
Founded year
2008
Operating status
Acquired
Headcount range
101–250 employees
Short description
Albireo Pharma is a US-based biopharmaceutical company developing novel bile acid modulators, notably the approved IBAT inhibitor Bylvay (odevixibat), for rare cholestatic liver disorders and pruritus. Acquired by Ipsen in 2023 for $952 million, it now operates as a wholly-owned subsidiary.
Ownership category
akta.pro rank

Albireo Pharma industry classification

Industry
Product category
Rare Disease Pharmaceuticals
NAICS
Biological Product (except Diagnostic) Manufacturing (325414)
SIC
Medicinal Chemicals & Botanical Products (2833)
akta.pro primary industry
Rare Gastroenterology & Hepatology Disorder Therapies (HLAIAIAL)
akta.pro secondary industries
Gastroenterology Specialty Pharmaceuticals (HLAIACAE), Gastroenterology & Hepatology Pharmaceuticals (HLAIAAAI)

Keywords

  • Rare disease therapeutics
  • Bile acid modulators
  • IBAT inhibitors
  • Cholestatic liver disease drugs
  • Pediatric hepatology

Where Albireo Pharma is headquartered

Location

Headquarters

HQ city
Gothenburg
HQ country
Sweden
HQ region
Europe

Markets served

Albireo Pharma business model

Business model
GTM type
B2B
Offering type
Hardware or Manufacturing
Cost components
Technology or R&D, Personnel, Operations, Marketing or Sales, Supply Chain, Infrastructure

Revenue model

  1. Bylvay Product Sales: Sales of Bylvay, the approved IBAT inhibitor, which posted €180 million (approximately $203 million) in 2025 sales, representing the primary revenue stream from Albireo's acquired portfolio.

Albireo Pharma product offering

Product offering

Core offering

Albireo Pharma develops and commercializes novel bile acid modulators, including the approved oral IBAT inhibitor Bylvay (odevixibat), for the treatment of rare cholestatic liver disorders such as progressive familial intrahepatic cholestasis (PFIC) and biliary atresia, as well as associated cholestatic pruritus. Following its 2023 acquisition by Ipsen, Albireo operates as a wholly-owned subsidiary within Ipsen's rare disease division, with Bylvay generating approximately €180 million in 2025 sales.

Product overview

Albireo Pharma was a biopharmaceutical company specializing in novel bile acid modulators for treating rare cholestatic liver disorders and pruritus (itching). The company's product portfolio centered around Bylvay, the approved IBAT inhibitor that became the centerpiece of Ipsen's $952 million acquisition of Albireo in 2023. The company also developed earlier-stage candidates including ritivixibat and A2342, which were later discontinued from Ipsen's pipeline following the acquisition.

Differentiator

Problem solved

Functional benefit

Brands

  • Bylvay: Odevixibat - an approved IBAT inhibitor for the treatment of progressive familial intrahepatic cholestasis (PFIC) and biliary atresia

Products and services

  • Bylvay (odevixibat) Bylvay is an approved oral IBAT (ileal bile acid transporter) inhibitor indicated for the treatment of progressive familial intrahepatic cholestasis (PFIC) in patients aged 6 months and older, and is being evaluated in a phase 3 trial for biliary atresia. It is Albireo's flagship commercial product and the centerpiece of Ipsen's 2023 acquisition, generating €180 million (~$203 million) in 2025 sales.

Quantifiable outcome

  • €180 million in 2025 sales for Bylvay
  • +1 more outcomes

Companies that use Albireo Pharma

Customer profile

Segments1 record

Ideal customer profiles1 record

Albireo Pharma technology and API

Technology

Technology focussed Yes

API detail

Has API
No
API docs
API detail

Core technology

AI maturity

App detail

Feature1 record

Albireo Pharma partnerships and signals

Strategic signal

Partnerships

One partnership is on record.

  • IpsencoreStrategic or Co-development Partner · 1 March 2023Ipsen acquired Albireo Pharma in March 2023 for $952 million to strengthen its rare diseases portfolio. The acquisition brought Bylvay (approved IBAT inhibitor), ritivixibat, and A2342 pipeline candidates. While ritivixibat and A2342 have since been discontinued, Bylvay remains a key asset with €180 million in 2025 sales and ongoing phase 3 trial in biliary atresia.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Albireo Pharma competitors and assessment

Company assessment

Direct peers

  • Mirum Pharmaceuticals: Mirum is the most direct competitor to Albireo's Bylvay, marketing maralixibat (LIVMARLI) — another approved IBAT inhibitor — for cholestatic pruritus in Alagille syndrome and PFIC, directly overlapping Albireo's mechanism, indications, and prescriber base.
  • Intercept Pharmaceuticals: Intercept developed obeticholic acid (Ocaliva) for primary biliary cholangitis (PBC), a cholestatic liver disease also addressed in Albireo's pipeline and patient segments, making it a direct comparator in rare cholestatic disease therapeutics.
  • Genfit: Genfit is developing elafibranor for PBC and other cholestatic/gastroenterology indications, overlapping Albireo's specialty gastroenterology and hepatology therapeutic focus.
  • CymaBay Therapeutics: CymaBay developed seladelpar for PBC, a cholestatic liver disease adjacent to Albireo's rare liver disease portfolio; acquired by Gilead, it represents a comparable specialty hepatology franchise.
  • Madrigal Pharmaceuticals: Madrigal's resmetirom (Rezdiffra) for MASH/NASH positions it in the specialty hepatology space, sharing the rare/specialty liver disease focus and prescriber base that Albireo's Bylvay targets.

Emerging players

  • Calliditas Therapeutics: Calliditas is a Sweden-based rare-disease specialty pharma with comparable European roots and a focus on underserved indications, mirroring Albireo's Stockholm/Gothenburg origin and rare-disease strategy.
  • Pliant Therapeutics: Pliant is developing therapies for liver fibrosis and rare fibrotic diseases, sharing the rare-hepatology therapeutic focus and clinical-stage profile relevant to Albireo's pipeline extensions.

Broad incumbents

  • Travere Therapeutics: Travere is a broader rare-disease biopharma with products in rare kidney and metabolic indications; its specialty-rare commercial model and rare-disease focus parallel Albireo's positioning under Ipsen.

Others

  • Ipsen: Ipsen is Albireo's parent company and acquired the firm in 2023 for $952M to add Bylvay and rare liver disease capabilities to its rare-disease franchise; relevant as the integrated commercial umbrella for Bylvay.

Market position

Strengths4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

Albireo Pharma social profiles

Digital presence

Albireo Pharma financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Albireo Pharma leadership team

Management profile

Number of profiles

Albireo Pharma funding detail

Funding detail

Funding overview

Funding rounds3 records

Investors3 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

Albireo Pharma M&A and investment

M&A and investment

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Albireo Pharma

What does Albireo Pharma do?

Albireo Pharma develops and commercializes novel bile acid modulators, including the approved oral IBAT inhibitor Bylvay (odevixibat), for the treatment of rare cholestatic liver disorders such as progressive familial intrahepatic cholestasis (PFIC) and biliary atresia, as well as associated cholestatic pruritus. Following its 2023 acquisition by Ipsen, Albireo operates as a wholly-owned subsidiary within Ipsen's rare disease division, with Bylvay generating approximately €180 million in 2025 sales.

Is Albireo Pharma a public or private company?

Albireo Pharma is a private company. It is classified as corporate owned and is currently acquired.

When was Albireo Pharma founded?

Albireo Pharma was founded in 2008. It employs 101 to 250 people.

Where is Albireo Pharma based?

Albireo Pharma is headquartered in Gothenburg, Sweden, in the Europe region.

How does Albireo Pharma make money?

One revenue line is on record: bylvay Product Sales.

Who are Albireo Pharma's main competitors?

Direct peers on record are Mirum Pharmaceuticals, Intercept Pharmaceuticals, Genfit, CymaBay Therapeutics and Madrigal Pharmaceuticals. Emerging players are Calliditas Therapeutics and Pliant Therapeutics. Travere Therapeutics is listed as a broad incumbent. Ipsen is listed as an others.

Does Albireo Pharma have an API?

No public API is recorded for Albireo Pharma.

What industry is Albireo Pharma in?

Albireo Pharma's product category is Rare Disease Pharmaceuticals. Its primary akta.pro industry code is HLAIAIAL, Rare Gastroenterology & Hepatology Disorder Therapies, with a secondary code of HLAIACAE, Gastroenterology Specialty Pharmaceuticals. Its NAICS code is 325414 and its SIC code is 2833.

Unlock the full company data

50 free credits on sign-up, no credit card required.

Contact sales
Live signals
European BiotechnologyProQR validates RNA editing platform and raises $59.2mProQR reported dose-dependent target engagement for its RNA editing candidate AX-0810 in a Phase 1 study, with up to eight-fold increases in serum bile acids at 6 mg/kg. The company raised $59.2m via a share offering and private placement, including Lilly's $9.2m stake, and plans a Phase 2 trial in paediatric biliary atresia in China.openPR.comEmerging Growth Trends Driving Expansion in the Pruritus Therapeutic MarketThe pruritus therapeutic market is projected to reach $24.04 billion by 2030, growing at a compound annual growth rate of 9.4%, driven by advances in treatment options and increased research activity. In March 2023, France-based Ipsen acquired US-based Albireo Pharma, a company specializing in novel bile acid modulators, to strengthen its portfolio with therapies targeting rare cholestatic liver disorders and pruritus-related drug development. Additionally, US-based Amgen Inc. partnered with Japan-based Kyowa Kirin in January 2023 to advance rocatinlimab, an anti-OX40 monoclonal antibody under investigation for moderate-to-severe atopic dermatitis.openPR.comFuture Perspective: Key Trends Shaping the Constipation Treatment Market Up to 2030The constipation treatment market is projected to grow to $18.72 billion by 2030, representing an 8.0% compound annual growth rate, driven by rising chronic constipation cases, increased opioid use, and expanded gastroenterology services. In March 2023, France-based Ipsen acquired US biotech firm Albireo Pharma Inc. to strengthen its rare diseases portfolio and expand capabilities in constipation therapeutics. The market report identifies key trends including preference for prescription medications, adoption of probiotics, targeted mechanism-based drugs, and growing online pharmacy distribution.GlobeNewswireIpsen extends expiration date of tender offer for Albireo Pharma, Inc. to 1 March 2023Ipsen extended the expiration of its tender offer for Albireo Pharma to 1 March 2023, allowing time to satisfy the HSR Act condition. Approximately 13.2 million shares, or 63% of outstanding, had been tendered as of 21 February. Completion remains subject to additional conditions.PR NewswireSHAREHOLDER ALERT: Weiss Law Reminds LPTX, CNCE, ALBO, and CINC Shareholders About Its Ongoing InvestigationsWeiss Law announced ongoing investigations into the boards of directors of four biotech/pharmaceutical companies regarding potential breaches of fiduciary duty in connection with proposed mergers and acquisitions. The investigations cover: Leap Therapeutics' acquisition of Flame Biosciences; Concert Pharmaceuticals' acquisition by Sun Pharmaceutical Industries for $8.00 per share plus a CVR; Albireo Pharma's acquisition by Ipsen S.A. for $42.00 per share plus a CVR; and CinCor Pharma's acquisition by AstraZeneca for $26.00 per share plus a $10.00 non-tradable CVR. Shareholders of these companies are being notified of their rights and encouraged to contact the law firm for consultation.PR NewswireSHAREHOLDER ALERT: Weiss Law Reminds ALBO, CINC, DCT, and PAYA Shareholders About Its Ongoing InvestigationsLaw firm Weiss Law announced ongoing investigations into possible breaches of fiduciary duty by the boards of directors of four companies in connection with proposed acquisitions: Albireo Pharma (being acquired by Ipsen S.A. for $42.00 cash plus CVR per share), CinCor Pharma (being acquired by AstraZeneca PLC for $26.00 cash plus CVR per share), Duck Creek Technologies (being acquired by Vista Equity Partners for $19.00 cash per share), and Paya Holdings (being acquired by Nuvei Corporation for $9.75 cash per share). The investigations examine whether the board directors fulfilled their fiduciary duties in approving these merger agreements on behalf of shareholders.PR NewswireSHAREHOLDER ALERT: Weiss Law Investigates Albireo Pharma, Inc.Weiss Law is investigating Albireo Pharma's board of directors for potential breaches of fiduciary duty regarding its proposed acquisition by Ipsen S.A. The merger agreement offers shareholders $42.00 per share plus contingent value rights, a figure that analysts suggest undervalues the company compared to a $59 price target. The investigation focuses on whether the board acted in shareholders' best interests and if the transaction terms are adequate.FinSMEsIpsen to Buy AlbireoIpsen agreed to acquire Albireo for $952 million in cash plus a contingent value right, paying $42 per share. The deal adds Albireo's bile-acid modulators, including Bylvay and A3907, to Ipsen's rare disease portfolio. Albireo's pipeline also includes A2342 for viral and cholestatic diseases.PR NewswireShareholder Alert: Ademi LLP investigates whether Albireo Pharma, Inc. has obtained a Fair Price in its transaction with IpsenLaw firm Ademi LLP announced an investigation into Albireo Pharma's $952 million acquisition by Ipsen, alleging possible breaches of fiduciary duty by Albireo's board of directors. Under the deal terms, Albireo shareholders will receive $42 per share in cash plus one contingent value right (CVR) worth up to $10 per share contingent on FDA approval of Bylvay for Biliary Atresia by December 2027. The law firm claims the transaction agreement unreasonably limits competing bids and that Albireo insiders will receive substantial benefits through change of control arrangements.BenzingaS&P 500 Gains 0.6%; Albireo Pharma Shares Spike HigherU.S. stock indices closed higher on Monday, with the S&P 500 gaining 0.63% to 3,919.83 and the Nasdaq Composite rising 1.63% to 10,741.65, while information technology shares led sector gains with a 2.8% increase. Three pharmaceutical acquisitions dominated individual stock movements: AstraZeneca announced the acquisition of CinCor Pharma for $26 per share (driving a 147% spike), Chiesi Farmaceutici agreed to buy Amryt Pharma for $14.50 per ADS plus contingent value rights (108% gain), and Ipsen announced the acquisition of Albireo Pharma for $42 per share plus $10 per share in contingent value rights (93% gain). Meanwhile, Calithera Biosciences fell 81% after announcing board approval for complete liquidation and dissolution, and Acuity Brands reported first-quarter FY23 net sales of $997.9 million, beating consensus estimates.