Sigma Lithium upsizes bond offering to $125M to replace higher-cost debt

what happened

Sigma Lithium is placing $125 million of senior unsecured convertible bonds maturing in 2031, according to Seeking Alpha. The company had planned a $100 million offering, so the size has been raised by 25%. The bonds carry a 7% fixed coupon, replacing the existing SOFR plus 6.95% floating rate, and push out the debt maturity from June 2027 to November 2031.

Most of the proceeds will repay debt owed to Synergy Capital, cutting short-term debt by about 80%. The remainder will go to growth capital expenditure and general corporate purposes. The conversion price is $6.51, a 25% premium to the November 2 closing share price, and conversion is generally available after 12 months. The offering is expected to close around November 16.

why it matters

The deal lowers the cost of servicing debt and reduces refinancing risk for the lithium producer. The company said it has repaid more than $90 million of debt from cash generation since the second quarter of 2024, cutting total debt 40% to $125 million as of October 21, 2026. It has not issued equity since 2021, so the convertible terms could affect the capital structure over time.

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