Ooma Owns a Copper-Line Niche but Bought Most of Its Growth

Cash left for shareholders after capex and all stock pay

$15.8M

Twelve months to Jul 31, 2026, our calculation

Growth in first-half revenue without the two acquisitions

8.1%

Six months to Jul 31, 2026, our calculation

Net dollar subscription retention

99%

Jul 31, 2026, per the 10-Q

1. Our call: Hold off, because Ooma bought its growth and its customers are not spending more

Our call: Hold off. Ooma sells internet phone service to small businesses and homes, plus AirDial, a box that replaces old copper phone lines for fire alarms, elevator phones and other building systems that phone companies are shutting off ^[1].

Customers mostly buy or rent a device and then pay monthly ^[1].

Second quarter fiscal 2027 revenue, the quarter to Jul 31, 2026, rose 25.4% to $83.2M from $66.4M, our calculation ^[2]. Most of that came from FluentStream and Phone.com, two business phone companies bought in Dec 2025, which added $22.4M of revenue in the first half ^[2].

Without them, first-half revenue grew 8.1%, our calculation ^[2].

We measure owner cash, the cash left for shareholders: operating cash flow, less purchases of property and equipment, less all stock pay. Ooma discloses no capitalized software.

On that measure Ooma lost $8.7M in fiscal 2024, kept $2.2M in fiscal 2025, $7.2M in fiscal 2026 and $15.8M over the twelve months to Jul 31, 2026, our calculation from SEC XBRL ^[8].

The question this piece answers is who owns the checkpoint when software agents start answering business phones. Our answer is that Ooma owns a useful niche in replacing copper lines for safety systems, but its main phone business competes with dozens of rivals, existing customers are spending slightly less, and the board has served for a long time with the chief executive as chairman, so we would wait

2. Research spending is close to a fifth of revenue

2b. Ooma owns a few copper-line replacements, not the business phone

A business phone line is a commodity, and the 10-K lists phone companies, cloud phone vendors and big software firms as rivals ^[1]. AirDial is different.

When a phone company shuts off a copper line, a building's fire alarm panel or elevator phone still needs a working line, and AirDial supplies it ^[1].

No passes, three partials and one fail. The AirDial partial is the most valuable part of the business, because the copper shutdown forces buyers to act and the device stays on the wall for years ^[1].

The fail on pricing matters most for the agent question. If a software receptionist answers calls, Ooma still charges by the line, not by the work done ^[1][3].

3. Organic growth runs near 8%, acquisitions add the rest

The fiscal 2027 jump is mostly bought. FluentStream cost about $45M in cash and Phone.com about $22.7M ^[2][6].

Both closed in Dec 2025, so they add a full year to fiscal 2027 against about two months in fiscal 2026, which contributed $6.1M ^[1][2].

Third quarter guidance of $83.7M to $84.5M is only slightly above the second quarter's $83.2M ^[3]. Annualized exit recurring revenue, which the company estimates from recurring revenue per core user, rose 24.7% to $298.9M, our calculation, again lifted by the acquisitions ^[2].

Subscription and services revenue was 91% of the total in the second quarter ^[3]. Product revenue, mostly devices, rose to $7.6M from $5.2M but cost $9.6M to deliver, a loss of $1.9M, our calculation ^[2].

4. More users, but each customer group spends a little less

Ooma had 1,427,000 core users at Jul 31, 2026, up 16.0% from 1,230,000, our calculation ^[2]. Business users made up about 49% of core users, up from 41%, as the acquisitions brought in business accounts ^[2].

Net dollar subscription retention, which compares recurring revenue from the same users a year apart, fell to 99% from 100% ^[2]. A rate under 100% means existing customers as a group are spending a little less each year, so all growth must come from new users or acquisitions ^[2].

Ooma had 1,420 employees and contractors at Jan 31, 2026, mainly in the U.S., the Philippines and Canada ^[1]. The 10-K names Comcast, Verizon, RingCentral, Vonage, 8x8, Nextiva, Dialpad, Microsoft, Zoom, Google Voice and Cisco among its competitors ^[1].

5. Margins are rising from a low base

Gross margin was 61.3% in the second quarter against 60.6% a year earlier, our calculation ^[2]. Operating income rose to $4.0M from $0.9M and net income to $3.0M from $1.3M ^[2].

Adjusted EBITDA, the company's measure, was $12.4M against $7.2M ^[3].

Interest is a new cost. Ooma had net interest and other expense of $0.8M in the quarter against $0.2M of income a year earlier, because it borrowed to pay for the acquisitions ^[2].

Amortization of acquired intangibles more than doubled to $6.2M in the first half from $2.8M ^[2].

The company guides fiscal 2027 GAAP net income to $11.9M to $12.7M, about 3.6% to 3.8% of guided revenue, our calculation ^[3]. The gap to adjusted EBITDA is mostly stock pay and amortization of acquired intangibles ^[3].

6. What shareholders kept turned positive and is growing

Free cash for investors was 5.2% of trailing revenue of $306.6M, our calculation ^[2][8]. The rise came from higher profit and from acquired businesses that add cash flow without adding much stock pay ^[2].

Inventory took $5.2M of cash in the first half, as Ooma stocked AirDial and other devices ^[2].

Stock pay is falling as a share of revenue. It was $7.2M in the first half against $7.6M a year earlier, while revenue rose 25.1%, our calculation ^[2].

That is the right direction for holders.

7. Buybacks are modest and debt is being paid down

Ooma repurchased $11.6M of stock in fiscal 2026 and $5.7M in the six months to Jul 31, 2026 ^[8]. Over the twelve months to Jul 31, 2026 buybacks were $11.9M against $15.8M of cash left for shareholders, a ratio of 0.8 to 1, our calculation ^[8].

It also spent $3.3M in the first half on taxes for staff shares that vested ^[2].

Diluted weighted shares rose to 28.9M in the second quarter from 28.1M a year earlier, up 2.7%, our calculation ^[8]. Buybacks have not kept up with share grants, so the count still drifts up.

To fund the acquisitions Ooma added a $65M term loan with Citizens Bank in Dec 2025 and cut its revolving credit line to $10M ^[7]. It prepaid $11.5M in the first half, leaving $47.0M outstanding at Jul 31, 2026, against cash of $17.5M ^[2].

At the first-half pace of repayment the loan would be gone in about two years, our calculation ^[2]. The loan carries leverage and fixed-charge limits and matures Dec 1, 2030 ^[2][7].

8. The main risks are rivals, phone-company timing and the board

Rivals: the business phone market has large players with bundled products, including Microsoft, Zoom and RingCentral, and the 10-K says competition will increase ^[1]. Small offices can switch phone vendors easily, which keeps prices low ^[1].

Copper timing: AirDial demand depends on how fast phone companies retire copper lines ^[1]. If that slows, the fastest-growing part of the business slows with it ^[1][3].

Board: Eric Stang has been chief executive since Jan 2009 and chairman since Dec 2014, and five of eight directors joined in 2014 or earlier ^[4]. At the Jun 2026 meeting director Susan Butenhoff drew 6.0M withheld votes against 12.3M for, so about a third of votes cast opposed her, our calculation ^[5].

Acquisitions: Ooma's brands now include acquired businesses such as 2600Hz, OnSIP, Broadsmart and Phone.com, and now carries debt to do it ^[1][2]. Each purchase adds amortization and integration work

9. A mature company buying growth

Ooma is in a mature stage. Organic growth runs in the high single digits, margins are thin but rising, and the company now uses debt and acquisitions to grow ^[1][2].

It has been run by the same chief executive since 2009 ^[4].

Three choices mark this stage. The company bought FluentStream and Phone.com with borrowed money, kept buying back stock, and leaned into AirDial for the copper shutdown ^[1][2][7].

It is also adding software receptionist features to sell more to the same small offices ^[3].

The test for this stage is whether the acquired customers stay and spend more. If net retention climbs back above 100% and cash left for shareholders keeps rising after the integration, the strategy works; if retention stays below 100%, Ooma is buying customers who slowly leave ^[2].

10. Software receptionists could help or hurt a phone company

The bull case is that small businesses miss calls, and software that answers, books and summarizes calls lets Ooma charge more per line ^[3]. Ooma launched three such features for its Office customers in the second quarter ^[3].

The bear case is that the same features come free in Microsoft, Zoom and Google products, and that a software agent does not need Ooma's phone line at all ^[1]. Retention at 99% shows no lift yet ^[2].

The test sits in numbers Ooma already discloses. If the new features matter, recurring revenue per core user and net retention should both rise in fiscal 2028 ^[2].

If they do not, retention will stay at or below 99% ^[2].

11. A long-serving board around the founder-era chief executive

Eric Stang, chief executive since Jan 2009 and chairman since Dec 2014, chairs the compensation committee at Rambus and was a director of InvenSense and Solta Medical ^[4]. He earlier ran Reliant Technologies and Lexar Media ^[4].

Chief financial officer Shig Hamamatsu, in the role since Sep 2021, was finance chief at Accuray and held finance roles at Cepheid, Cypress Semiconductor and RPX ^[4]. Chief accounting officer Namrata Sabharwal, in the role since Jun 2022, has been at Ooma since 2015 and was interim finance chief in 2021 ^[4].

Jenny Yeh is both chief legal officer and a director, one of two insiders on the board, and earlier worked at Sphere 3D, General Electric and Baker & McKenzie ^[4]. Audit chair Andrew Galligan was Ooma's own finance chief from 2009 to 2010 and a consultant to it for four years.

He was also finance chief at Reliant Technologies in 2007 to 2008 while Stang was its chief executive ^[4]. He sits on the Arcellx board and was Nevro's finance chief for ten years ^[4].

Lead non-management director William Pearce, a Berkeley Haas marketing teacher and former Del Monte and Taco Bell marketing chief, sits on the Algonomy board

12. The questions we would ask management, and the calls we are tracking

Question one: what was net retention for the core Ooma business alone, without the acquired customers? ^[2]

Question two: how much of AirDial revenue renews each year, and what share of installed units are on multi-year contracts? ^[1][3]

Question three: how many Office customers pay for the new receptionist features, and at what added price per line? ^[3]

Question four: why does Andrew Galligan, a former Ooma finance chief and consultant, chair the audit committee? ^[4]

Question five: will free cash for investors go to debt, buybacks or more acquisitions in fiscal 2028? That answer sets our conviction.

^[2][7]

Prediction one: fiscal 2027 revenue lands inside the $332.0M to $333.5M guide or above it (75%). ^[3]

Prediction two: net dollar subscription retention is 100% or lower at Jan 31, 2027 (70%).

Bottom line: Ooma owns a copper-line niche but bought most of its growth

Ooma's revenue rose 25.4% in the second quarter, but 8.1% without the two Dec 2025 acquisitions, and net retention slipped to 99% ^[2]. Cash left for shareholders rose to $15.8M over the twelve months to Jul 31, 2026, buybacks ran 0.8 to 1 against it, and $47.0M of term debt remains ^[2][8].

We would move to Buy if net retention passes 101% and organic growth reaches 10% for two quarters. A drop in cash left for shareholders or a new debt-funded purchase would move us toward Avoid.

Our call: Hold off, conviction 3 of 5.