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Dyne Therapeutics Announces Expanded Debt Facility of Up To $400 Million with Hercules Capital, Inc.

$DYNPress releaseJun 17, 2026, 7:30 AM ETRead the release

Dyne Therapeutics amended its senior secured term loan facility with Hercules Capital to increase total capacity to $400 million, immediately funding $50 million in non-dilutive capital. The expansion adds $125 million in new borrowing capacity, split between a milestone-based tranche and a discretionary tranche, while keeping total current borrowings at $200 million. This financial flexibility is intended to support the advancement of DYNE-251 for Duchenne muscular dystrophy and DYNE-101 for myotonic dystrophy type 1 through upcoming clinical milestones and potential U.S.

Key figures

Immediate funding
$50 million
Milestone tranche
$50 million
Current borrowings
$200 million
Remaining capacity
$200 million
Additional capacity
$125 million
Discretionary tranche
$75 million
Total facility capacity
$400 million

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