Highest-materiality recent filing
Korro Bio selects KRRO-111 for AATD; pre-clinical results show >90% RNA editing
KRRO-111 is a GalNAc-conjugated oligonucleotide delivered subcutaneously for AATD.
Korro Bio Q1 net loss narrows to $19.6M; cash at $157M; KRRO-121 filing on track for H2 2026
Net loss of $19.6M vs $23.4M in Q1 2025; R&D spend down to $12.9M from $19.7M.
FY2025 net loss $117.3M vs $83.6M in FY2024, driven by $30.9M non-cash impairment charges on KRRO-110 termination.
Korro Bio raises $85M in PIPE led by Venrock; cash runway into H2 2028
Gross proceeds ~$85M from 4,501,928 shares at $11.11 and 3,148,836 pre-funded warrants at $11.109.
Korro Bio holds Analyst Day highlighting KRRO-121 for ammonia control
Hosted virtual Analyst Day on Jan 27, 2026, presenting on KRRO-121 for ammonia control.
Korro Bio updates corporate presentation; no specific financial or operational details disclosed
Company updated its corporate presentation on January 15, 2026 for investor meetings.
Amended employment agreement for Jeffrey Cerio effective Dec 15, 2025; base salary increased to $425,000.
Cash, equivalents and securities $102.5M at Sept 30, 2025; net loss $18.1M for Q3.
Korro Bio CFO resigns; CEO takes interim CFO role
CFO Vineet Agarwal resigns effective Oct 17, 2025; will advise for 30 days.
Korro Bio Q2 2025 net loss $25.8M; cash $119.6M; KRRO-110 interim data on track H2 2025
Cash, cash equivalents and marketable securities of $119.6M as of June 30, 2025, expected to fund operations into 2027.
Korro Bio board adopts annual say-on-pay vote after shareholder advisory vote
Stockholders voted for '1 Year' frequency for future advisory votes on NEO compensation at June 11, 2025 annual meeting.
Elected Ram Aiyar, Jean-François Formela, Katharine Knobil as Class III directors for three-year terms ending 2028.
Korro Q1 net loss $23.4M; workforce reduction of 20%, cash runway into 2027
Net loss $23.4M vs $19.6M YoY; collaboration revenue $2.6M from Novo Nordisk.
CFO Vineet Agarwal reappointed as principal financial officer effective March 27, ending temporary medical leave since Feb 11.
Korro Bio reports FY2024 net loss $83.6M; cash $163.1M; KRRO-110 interim readout H2 2025
Net loss $83.6M (vs $81.2M in 2023); R&D expenses $63.6M; G&A $30.5M.
Effective Feb 11, 2025, CFO Vineet Agarwal on temporary medical leave from Korro Bio.
Korro Bio dosed first participants in Phase 1/2a study of KRRO-110 for AATD; interim data H2 2025
First participants dosed in REWRITE Phase 1/2a study of KRRO-110 for Alpha-1 Antitrypsin Deficiency (AATD).
Australian HREC approval and TGA clearance obtained for Phase 1/2a REWRITE study of KRRO-110 in AATD.
Net loss of $21.0M for Q3 2024 vs $18.5M in Q3 2023; R&D expenses $16.0M (up from $14.0M).
Korro Bio files first regulatory submission for KRRO-110 in AATD, expects first dosing Q1 2025
Regulatory filing submitted to Australian Bellberry HREC for Phase 1/2 study of KRRO-110 in Alpha-1 Antitrypsin Deficiency.
Korro Bio partners with Novo Nordisk for up to $530M in RNA editing deal for cardiometabolic targets
Up to $530M in upfront, development, and commercial milestone payments plus tiered royalties and R&D funding.
Director David Lucchino resigns; Katharine Knobil appointed to board
David Lucchino resigned from board effective Aug 26, 2024; no disagreement with management or board.
Korro Bio Q2 net loss $21.8M; cash $187.8M; KRRO-110 FIH filing on track
Net loss of $21.8M for Q2 2024, up from $17.6M in Q2 2023, driven by higher R&D and G&A costs.
Korro Bio Chief Scientific Officer Steve Colletti to resign effective August 2, 2024
Steve Colletti, Ph.D., notified Korro Bio of his resignation as Chief Scientific Officer on June 17, 2024.
Amendment to charter to limit officer liability per Delaware law approved with 5,876,891 votes for, 13,173 against; effective June 11, 2024.
Korro Bio Q1 net loss $19.6M; appoints Kemi Olugemo as CMO; cash $138.8M plus $70M PIPE
Net loss $19.6M in Q1 2024, unchanged from Q1 2023; R&D $13.6M, G&A $7.9M.
Korro Bio appoints Dr. Kemi Olugemo as Chief Medical Officer
Dr. Olugemo joined as CMO effective May 13, 2024; prior role was VP of Global Clinical Development at Ultragenyx.
Korro Bio closes $70M private placement to fund Phase 1/2 trial of KRRO-110
Sold 1,249,283 shares at $56.00 per share for gross proceeds of ~$70M.
Korro Bio raises ~$70M in PIPE led by Deep Track Capital; pro-forma cash ~$236M
PIPE of 1,249,283 shares at $56.00 each for gross proceeds of ~$70M.
Effective March 27, 2025, Vineet Agarwal, Chief Financial Officer of Korro Bio, Inc., or the Company, ended his temporary medical leave of absence, which had been in effect since February 11, 2025.
the Company’s Board of Directors appointed Mr. Oliver Dolan, age 42, current Senior Vice President, Finance, to serve as the Company’s principal accounting officer effective March 27, 2025.
Dr. Ram Aiyar, who had been serving as the Company’s interim principal financial officer, is no longer serving in that role as of March 27, 2025 and continues to serve as the Company’s President and Chief Executive Officer (principal executive officer).
Effective February 11, 2025, Vineet Agarwal, Chief Financial Officer (principal financial officer and principal accounting officer) of Korro Bio, Inc., or Korro, is taking a temporary medical leave of absence.
and Mr. Oliver Dolan, Senior Vice President, Finance, to serve as Korro’s interim principal accounting officer
Korro’s Board of Directors appointed Dr. Ram Aiyar, President and Chief Executive Officer (principal executive officer), to serve as Korro’s interim principal financial officer
On August 26, 2024, David L. Lucchino, a member of our Board of Directors, or the Board, notified us that he resigned from the Board, effective immediately.
and then increased the number of directors from six to seven to create a vacancy in Class III and then appointed Katharine Knobil, M.D. to fill the newly created vacancy on the Board in Class III effective immediately.
On June 17, 2024, Steve Colletti, Ph.D., notified Korro Bio, Inc. of his intent to resign as its Chief Scientific Officer effective August 2, 2024.
Max materiality 0.85 · Median 0.60 · Most common event other_material