Negative 1,307%.
That was NextNav's free-cash-flow margin for the six months ended June 30, 2026. The company finished with more cash than a year earlier, but the business produced less revenue and consumed more cash running itself. Cash and cash flow are telling different jokes here, and neither is especially subtle.
Revenue fell 4.3% to $1.1 million from the comparable six-month period. Operating cash flow worsened to negative $28.0 million from negative $25.7 million, while operating losses widened to $20.2 million. Net loss narrowed to $33.8 million from $63.2 million, but that improvement did not come from the operating line.
NextNav attributed the revenue decline to weaker service revenue from its government and commercial contracts:
"The decrease was driven by a decrease in service revenue from technology and services contracts with government and commercial customers."
NextNav, 10-Q, August 11, 2026.
The filing attributes the top-line movement to lower service revenue from the customer groups it names. The balance sheet still held $77.7 million of cash, up from $58.9 million, but the supplied filing comparison does not identify what produced that increase.
The cost base moved in the other direction. Research and development rose 13.2%, and stock compensation increased 61.2% to $5.9 million. Capital spending fell to $15,000 from $57,000, a small cash saving beside the operating deficit. The company also issued more equity: diluted shares rose 7.0% to 141.6 million.
Debt added another drain. NextNav said the increase in cash liquidity costs was primarily tied to interest and debt-discount amortization:
"The increase was primarily driven by higher interest and amortization of debt discounts expense."
NextNav, 10-Q, August 11, 2026.
The six-month interest expense on the 2028 Notes was $9.6 million, up from $5.1 million a year earlier. The notes are secured by substantially all of the assets of NextNav and its subsidiaries, according to the filing. More cash on hand therefore sits alongside a costlier capital structure, not simply a stronger operating engine.
The customer disclosures provide context for the company's commercial exposure. NextNav identifies Verizon as a current customer for E911 services and says carrier willingness matters to its ability to retain customers or sell its z-axis service. It also warns that losing or failing to renew its AT&T services agreement could affect sales to FirstNet and other public-safety customers:
"While we are currently providing service to Verizon, and provide services to devices operating on other carriers’ networks as customers for E911 services, our ability to retain these customers or sell our z-axis service to additional wireless carriers or device vendors for E911 in our coverage area depends upon the continued willingness of these carriers and device vendors to use our service to comply with FCC mandates."
NextNav, 10-Q, August 11, 2026.
That disclosure does not quantify either customer's share of revenue. It does show where the commercial exposure sits: government and public-safety contracts, carrier adoption, and regulatory compliance.
NextNav's latest annual revenue was 4.6M; market cap was 2.1B and enterprise value was 2.3B, with EV/sales at 508.3x. That arithmetic leaves the filing's central trade-off exposed: the cash balance is larger, but operating cash flow remained deeply negative. The filing places revenue, operating cash flow, cash, debt costs, and diluted shares side by side again.
More cash, less operating business: NextNav's six-month trade-off in one line.