WillScot Mobile Mini Holdings Corp. — FY 2021 Form 10-K
Reporting period: Fiscal year ended December 31, 2021. The filing is an annual report, not a standalone fourth-quarter filing. Unless noted, amounts are in U.S. dollars.
Business context and reporting period
The company leases modular workspace, portable storage, and specialty tank-and-pump equipment, with related delivery, installation, and other services. It operates in four segments: North America Modular, North America Storage, UK Storage, and Tank and Pump. At year-end, it had approximately 275 branches and drop lots, about 390,000 total units, and more than 85,000 customers.
Comparisons with 2020 require care: the Mobile Mini merger closed July 1, 2020, so reported 2020 results include Mobile Mini for only the second half of the year. Management also provides unaudited pro forma comparisons that treat the merger as completed earlier. Segment reporting changed in Q3 2021 when most portable storage activity was moved from NA Modular to NA Storage; prior-period segment results were not fully recast.
Key financial metrics
| Metric | FY 2021 | FY 2020 |
|---|---|---|
| Revenue | $1,894.9 million | $1,367.6 million |
| Gross profit / margin | $968.2 million / 51.1% | $660.0 million / 48.3% |
| Operating income | $360.3 million | $182.7 million |
| Net income | $160.1 million | $75.3 million |
| Diluted EPS | $0.69 | $0.25 |
| Adjusted EBITDA (non-GAAP) | $740.4 million; 39.1% margin | $530.3 million |
| Cash from operating activities | $539.9 million | $304.8 million |
| Free cash flow (non-GAAP) | $303.0 million | $162.3 million |
| Net capital expenditures (non-GAAP) | $236.9 million | $142.5 million |
Q4 2021 revenue was $517.9 million, gross profit $278.5 million, Adjusted EBITDA $211.2 million, and net income $74.2 million. Q4 diluted EPS was $0.32. These quarterly figures are reported results, not pro forma comparisons.
At December 31, 2021, cash was $12.7 million; rental equipment, net, was $3.08 billion; total assets were $5.77 billion; and shareholders’ equity was $2.00 billion. Debt carrying value was $2.71 billion, including $1.61 billion under the ABL facility, $518.1 million of 2025 secured notes, $492.5 million of 2028 secured notes, and $89.1 million of finance leases. The company reported $743.6 million of available ABL borrowing capacity and said liquidity and operating cash flows were expected to cover anticipated needs for at least the next 12 months. Debt obligations including interest totaled approximately $3.2 billion; $21.8 million was due within 12 months.
Material changes versus the prior comparable period
- Reported revenue increased 38.6% and net income rose to $160.1 million from $75.3 million. The reported revenue increase includes a full year of Mobile Mini in 2021 versus only six months in 2020.
- On management’s pro forma basis, revenue increased 14.7% to $1.895 billion, net income rose 29.3% to $160.1 million from $123.8 million, and Adjusted EBITDA increased 14.5% to $740.4 million from $646.5 million.
- Rental-rate and utilization trends strengthened, particularly in portable storage. Average portable storage utilization rose to 81.5% from 75.9%; its average monthly rate increased to $144 from $132. Modular average monthly rate rose to $744 from $658, while utilization was roughly flat at 70.1% versus 70.2%.
- Operating cash flow increased $235.1 million. Investing outflows rose to $384.0 million, including $147.2 million for acquisitions and higher fleet investment. The company repurchased $365.9 million of common stock and stock equivalents during 2021.
- The company redeemed $123.5 million of its 6.125% 2025 secured notes, recording $6.0 million of extinguishment losses. Debt carrying value increased year over year, primarily reflecting higher ABL borrowings.
Outlook, management commentary, risks and unusual items
Management expected continued market recovery in 2022 and cited forecasts for U.S. real GDP and non-residential construction starts to grow 4%–7%. These are market expectations, not company-specific revenue or earnings guidance. Management highlighted pricing, value-added products and services (VAPS), cross-selling, acquisitions, and operational efficiencies as growth levers, and stated that it expects to use free cash flow for investment, debt reduction, and shareholder returns.
Notable items affecting results included $44.6 million of discrete transaction, integration, restructuring, lease impairment, and related costs; a $26.6 million non-cash fair-value loss on warrant liabilities; and $6.0 million of debt extinguishment losses. Income tax expense was $49.5 million, versus a $51.5 million benefit in 2020, which included a valuation-allowance reversal. Adjusted EBITDA and free cash flow are non-GAAP measures and should not be treated as substitutes for GAAP results or cash available for discretionary use.
Key disclosed risks include economic and end-market cyclicality; COVID-19 and supply-chain disruption; inflation in labor, materials, and fuel; acquisition integration; competition and pricing pressure; customer credit and equipment recovery; variable-rate debt and interest-rate exposure; leverage and debt covenants; foreign exchange; regulatory and environmental obligations; and potential impairment of goodwill or intangible assets. The allowance for credit losses was $47.6 million, or 10.6% of gross trade receivables, and was identified as a critical audit matter. The company reported no material environmental matter known to it and no material adverse effect expected from ordinary-course legal proceedings.
Most important facts for investors to verify
- Use pro forma, rather than reported, 2020 results when assessing organic year-over-year growth; check the assumptions and limitations of those unaudited comparisons.
- Track rental rates, units on rent, utilization, and VAPS penetration—especially the softer NA Modular utilization and the strong portable storage recovery.
- Assess debt repayment capacity, ABL availability, variable-rate exposure, covenant headroom, and the substantial 2025 maturity concentration.
- Reconcile free cash flow and Adjusted EBITDA to GAAP measures, including capital spending, integration costs, and other add-backs.
- Monitor receivable quality and allowance adequacy, given the increase in the allowance and its significance as an audit matter.
- Evaluate returns from acquisitions, fleet investment, and the $1.0 billion repurchase authorization; $956.7 million remained available at year-end.
- Review the full audited financial statements and notes for debt terms, cash requirements, tax-attribute limitations, contingencies, and segment reclassification effects.