NorthWestern Energy Group, Inc. — Form 8-K
Filed September 9, 2026 · analyzed by the 8-K Agent
8-K
▲ Likely positive
significance 72/100
What the filing says
NorthWestern Energy (NWE, $3.1B market cap) and Black Hills Corporation are pursuing a merger announced in 2024. As of September 2026, Nebraska and South Dakota have granted unanimous regulatory approval (May 2026 and June 2026, respectively); FERC approved in May 2026; both shareholders approved in April 2026; HSR cleared April 2026. Montana regulatory approval remains pending (hearing concluded May 2026, final briefs submitted July 2026). Combined entity would serve 2.2M customers across multiple jurisdictions, target $12B rate base, and increase EPS growth guidance from 4-6% to 5-7%. No acquisition price disclosed in filing; no counterparty dollar amounts specified.
Why this rating
Merger-driven scale increase, material EPS growth uplift (5-7% vs. 4-6%), and rate base doubling are significant for a $3.1B company. Final regulatory approval pending in major jurisdiction limits full certainty.
Tradability signal
NO TRADE
No trade: positive news with only -0.1% moved so far — good news prices in within seconds and long-side continuation has shown no measured edge (this cell: -1.08% over 4 hrs, n=23).
Derived from this site's own measured outcomes + live price/liquidity at analysis time. An experiment, not investment advice.
Price action (we called it positive)
before filing · preread $71.58 ▲ 0.06% | at our read · unknown $71.54 | +10 min · unknown $71.46 ▼ 0.11% | +30 min · unknown $71.14 ▼ 0.55% | +1 hr · unknown $71.11 ▼ 0.60% | +4 hrs pending |
The stock had already moved -0.06% between hitting EDGAR and our read finishing — deltas above are measured from our read.
Quotes via Yahoo Finance at capture time; sessions other than regular hours are labeled. Not investment advice. How accurate are our calls? →
See more from September 9, 2026.
EDGAR·FLOW summarizes public SEC EDGAR filings with automated analysis. Materiality scores and stock-impact predictions are algorithmically generated and are not investment advice. Always verify against the source filing on SEC.gov.