Altesa Funding, Investors & Competitors

Altesa has raised $110M across 2 funding rounds, most recently a $75M Series B in February 2026.

Last Altesa funding round

$75M

Series B · Feb 2026

Cumulative funding Altesa raised

$110M

across 2 funding rounds

Key investors in Altesa

  • Pitango VC
  • Forbion Capital Partners
  • Sanofi
  • Medicxi
  • Atlantic Partners

Altesa Overview

About Altesa

Altesa is a clinical-stage biopharmaceutical firm developing antiviral therapeutics against high-consequence pathogens like Ebola and Marburg. Its lead candidates feature broad-spectrum small molecules targeting viral replication mechanisms for rapid deployment in outbreaks. Headquartered in San Francisco, Altesa advances programs through Phase 1 trials in collaboration with U.S. government agencies and international health organizations focused on biodefense preparedness.


Founded

2022

HQ

United StatesWashington, DC

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Altesa Funding History

Altesa has raised a total of $110M across 2 funding rounds.

Altesa's first fundraising round was a $35M Series A in January 2023. The most recent completed round was a $75M Series B in February 2026.

Altesa funding rounds

Altesa funding rounds
DateStageInvestorsRaisedDeal Summary
Feb 2026Series BForbion Capital Partners (lead); Pitango VC; Atlantic Partners; Sanofi; Medicxi$75MAltesa BioSciences is a clinical-stage pharmaceutical company based in Atlanta, focused on developing treatments for chronic lung diseases such as COPD and asthma. Its lead candidate, vapendavir, is an oral antiviral targeting rhinovirus infections, the primary cause of respiratory exacerbations in these patients. The company was founded with early backing from investors like Medicxi and Pitango, who participated in a $4 million seed round disclosed in 2022, and secured $35 million in a previous funding round around 2023. On February 19, 2026, Altesa closed an oversubscribed $75 million Series B financing round led by Forbion Capital Partners, with participation from Sanofi and existing investors Medicxi, Pitango VC, and Atlantic Partners. The proceeds will fund the CARDINAL study, a Phase 2b multinational randomized placebo-controlled trial enrolling 900 COPD patients in the US and UK. The trial, led by Chief Medical Officer Dr. Katharine Knobil (formerly of GSK), will randomize patients upon rhinovirus infection to evaluate vapendavir's safety and efficacy, with initiation planned for Q2 2026. Altesa is led by CEO Brett P. Giroir, M.D., former Assistant Secretary of Health and Acting FDA Commissioner, who joined in 2022 alongside a research agreement with Emory University for viral disease drugs. Vapendavir has potential beyond COPD to other high-risk respiratory populations like asthma patients. The round highlights strategic support from Forbion's life sciences expertise and Sanofi's COPD therapeutics knowledge, aiming to address unmet needs in viral-triggered exacerbations and reduce healthcare burdens.
Jan 2023Series A-$35MAltesa BioSciences is an Atlanta-based clinical-stage biotechnology company developing therapies for chronic lung diseases, including COPD and asthma, with a lead candidate vapendavir targeting rhinovirus infections that exacerbate these conditions. The company previously secured a Series A funding round of $35M on January 5, 2023, led by Pitango Venture Capital. In 2022, prior to the Series A, CEO Brett Giroir (former acting FDA commissioner and Trump administration COVID-19 testing czar) joined Altesa, which also finalized a research agreement with Emory University for antiviral drugs against diseases like dengue and Zika. By 2025, the company hired former GSK Chief Medical Officer Katharine Knobil as CMO to oversee vapendavir's clinical development, an asset with a history of prior ownership changes and a failed asthma study, though Altesa developed an improved formulation showing early promise. Three years after the Series A, Altesa closed an oversubscribed $75M Series B on February 19, 2026, led by Forbion with participation from Sanofi, Medicxi, Pitango, and Atlantic Partners. Proceeds from the Series B will fund the Phase 2b CARDINAL study, a 900-patient multinational trial in COPD patients with rhinovirus infections, starting Q2 2026. Vapendavir has potential applications beyond COPD, including asthma and other high-risk respiratory populations.

Who has invested in Altesa?

5 investors have backed Altesa across its funding rounds, including Pitango VC, Forbion Capital Partners, Sanofi, Medicxi and Atlantic Partners.

Lead investors include Forbion Capital Partners.


Altesa Investors

Investors in Altesa by funding rounds participated
InvestorHQRoundsRoleFirst check
Pitango VCIsraelHerzliya1ParticipantFeb 2026
Atlantic Partners--1ParticipantFeb 2026
SanofiFranceParis1ParticipantFeb 2026

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Altesa Competitors

Altesa competitors include listed companies like Eli Lilly, Johnson & Johnson, AbbVie and Merck, and private ones like Biosplice Therapeutics and Biocon Biologics.

Public and private companies comparable to Altesa
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Eli LillyUnited StatesUnited StatesPublicly listed$65B$28B$1.0T13.1x
Johnson & JohnsonUnited StatesUnited StatesPublicly listed$94B$40B$651B6.8x
AbbVieUnited StatesUnited StatesPublicly listed$61B$17B$467B8.1x
MerckUnited StatesUnited StatesPublicly listed$65B$28B$363B6.2x
Biosplice TherapeuticsUnited StatesSan Diego, CAPrivate--$12B-
Biocon BiologicsIndiaBangalorePrivate$1.1B-$4.5B4.2x

Altesa Public Comps

Altesa is still privately-owned, but its public comps include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Roche, Novartis, AstraZeneca, Amgen, Novo Nordisk and Gilead Sciences.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Eli Lilly$65B$28B16.5x13.1x38.7x27.0x
Johnson & Johnson$94B$40B7.2x6.8x17.0x18.3x
AbbVie$61B$17B8.7x8.1x30.6x17.6x
Merck$65B$28B6.3x6.2x14.7x21.0x
Roche$77B$26B5.0x4.9x14.6x12.4x
Novartis$57B$22B5.5x5.5x14.2x13.3x
AstraZeneca$59B$19B4.8x4.5x14.6x12.7x
Amgen$37B$17B6.8x6.5x14.8x14.4x

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Common questions about Altesa

When was Altesa founded?Altesa was founded in 2022.
Where is Altesa headquartered?Altesa is headquartered in Washington, DC, United States.
Is Altesa publicly listed?No, Altesa is a private, VC-backed company.
How much funding has Altesa raised?Altesa has raised $110M across 2 funding rounds.
What was Altesa's last funding round?Altesa's last funding round was a $75M Series B in February 2026, led by Forbion Capital Partners.
Who are Altesa's investors?Altesa's investors include Pitango VC, Atlantic Partners, Sanofi, Forbion Capital Partners and Medicxi.
Which companies are comparable to Altesa?Companies comparable to Altesa include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Biosplice Therapeutics and Biocon Biologics.

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