Open report — full analysis, no account required.
Sign up to generate reports and read filings that aren't on the open list.
Get notified when WLDN files again. Create a free account and we'll email you the moment its next filing is analyzed.
Get filing alertsWilldan Group to acquire Mantis Intermediate Holdings for $285 million in cash
Filed September 23, 2026 · Period ending September 22, 2026 · ~1 min read
Key Changes
-
high
Willdan Energy Solutions, a wholly owned subsidiary, agreed to buy 100% of Mantis Intermediate Holdings for a base purchase price of $285 million in cash, subject to adjustments.
Item 1.01 verify on EDGAR → -
medium
Willdan Group provides a full, unconditional, and irrevocable guarantee of its subsidiary's obligations under the purchase agreement.
Item 1.01 verify on EDGAR → -
medium
Closing is expected on October 30, 2026, or three business days after all conditions are satisfied, including HSR antitrust clearance.
Item 1.01 verify on EDGAR → -
low
The buyer has obtained a commitment for representations and warranties insurance, subject to deductibles, exclusions, and policy limits.
Item 1.01 verify on EDGAR →
Summary
Willdan Group announced that its subsidiary, Willdan Energy Solutions, has entered into a definitive agreement to acquire Mantis Intermediate Holdings for a base purchase price of $285 million in cash, subject to customary adjustments. The parent company is providing a full and unconditional guarantee of the subsidiary's obligations, which puts Willdan's balance sheet behind the deal.
The transaction is expected to close on October 30, 2026, pending antitrust clearance and other conditions. For retail investors, this acquisition represents a significant capital deployment by Willdan. The $285 million price tag is material relative to the company's size, and the parent guarantee means the deal's obligations are backed by the entire company.
The use of representations and warranties insurance is a common deal-protection mechanism that may limit the seller's liability for breaches. Investors should note that the closing is subject to regulatory approval and other conditions, so the timing could slip. The filing does not disclose the strategic rationale or expected synergies, so the market will be watching for management commentary on how this acquisition fits into Willdan's growth plans.
Section-by-Section Diff
Event · Item 1.01 — Entry into a Material Definitive Agreement
Item 1.01 — Entry into a Material Definitive Agreement filed; see Key Changes for terms.
Added in current filing · verify on EDGAR →
Under the Purchase Agreement, the Closing will occur on October 30, 2026, or the third business day after all closing conditions are satisfied or waived
The transaction is expected to close on October 30, 2026, or three business days after all conditions are met. Conditions include HSR antitrust clearance, accuracy of representations and warranties, and no legal prohibition on the deal.
Added in current filing · verify on EDGAR →
Willdan absolutely, unconditionally and irrevocably guarantees to Seller, the full and punctual payment, performance and discharge of all of Energy Solutions’ obligations under the Purchase Agreement
Willdan Group, the parent company, is providing a full and unconditional guarantee of its subsidiary's obligations under the purchase agreement, including payment of the adjusted purchase price and financing obligations. This puts the parent's balance sheet behind the deal.
Show 1 minor / wording change
Added in current filing · verify on EDGAR →
Energy Solutions has obtained a commitment for, and conditionally bound, “representations and warranties” insurance
The buyer has secured representations and warranties insurance to cover certain breaches of the seller's representations, subject to deductibles, exclusions, and policy limits. This is a common deal-protection mechanism that can shift some risk away from the seller.
Thanks — your feedback helps us improve report quality.
Figures/quotes linked to EDGAR · Narrative written by AI · Sep 24, 2026 · How we verify