tapebrief
FTNT · Q3 2025
FTNT · Q1 2026

FTNT · Q4 2025 Earnings

Bullish

Fortinet

Reported February 5, 2026

30-second summary

Fortinet closed FY2025 with Q4 FY2025 revenue of $1.905B (+14.7% YoY), beating the high end of its own guide by $20M, while non-GAAP EPS of $0.81 crushed the $0.73–$0.75 range by eight cents and non-GAAP operating margin of 37.3% printed 180bps above the guide ceiling — the second consecutive quarter of 36%+ operating margin against a sub-36% guide. Product revenue accelerated again to +20% (from Q3's +18% and Q2's +12.6%), and Unified SASE billings grew 40%. But the FY2026 initial guide — revenue $7.5–7.7B (+10.3–13.2% YoY), EPS $2.94–3.00 (+6.5–8.7%), non-GAAP operating margin 33.0–36.0% — implies revenue deceleration from FY2025's +14.2% and modest margin compression off the FY2025 non-GAAP operating margin actual of 35.5%, setting up a 2026 where the bull case rests on Fortinet sandbagging again.

Headline numbers

EPS

Q4 FY2025

$0.81

Revenue

Q4 FY2025

$1.91B

+14.7% YoY

Gross margin

Q4 FY2025

79.6%

Free cash flow

Q4 FY2025

$0.58B

Operating margin

Q4 FY2025

32.8%

Key financials

Q4 FY2025
MetricQ4 FY2025YoYQ3 FY2025QoQ
Revenue$1.91B+14.7%$1.72B+10.4%
EPS$0.81—$0.74+9.5%
Gross margin79.6%—80.8%-120bps
Operating margin32.8%—31.7%+110bps
Free cash flow$0.58B—$0.57B+1.7%

Guidance

Guidance is issued for both next quarter and the full year. Both may appear below.

Actuals vs prior guidance

MetricPeriodPrior guideActualΔResult
RevenueQ4 FY2025$1.825 billion to $1.885 billion$1.905 billion+$0.020 billion above high end of guideBeat
Non-GAAP EPSQ4 FY2025$0.73 to $0.75$0.81+$0.06 above high end of guideBeat
BillingsQ4 FY2025$2.185 billion to $2.285 billion$2.37 billion+$0.085 billion above high end of guideBeat
Non-GAAP Operating MarginQ4 FY202534.5% to 35.5%37.3%+1.8 percentage points above high end of guideBeat
Non-GAAP Gross MarginQ4 FY202579.0% to 80.0%79.6%in-line (midpoint of guide)Beat

New guidance

MetricPeriodGuideYoY
RevenueFY2026$7.500 billion to $7.700 billion—
Non-GAAP EPSFY2026$2.94 to $3.00—
BillingsFY2026$8.400 billion to $8.600 billion—
Service RevenueFY2026$5.050 billion to $5.150 billion—
Non-GAAP Gross MarginFY202679.0% to 81.0%—
Non-GAAP Operating MarginFY202633.0% to 36.0%—
RevenueQ1 FY2026——

Segment performance

Q4 FY2025
SegmentQ4 FY2025YoY
Product Revenue$0.691B+20.4%
Service Revenue$1.214B+11.8%

Platform metrics

Q4 FY2025
SegmentQ4 FY2025
Billings$2.37B
Billings YoY Growth18%
Firewall Unit Market Share55%
Rule of 45Exceeded (sixth consecutive year)

Profitability

Q4 FY2025
SegmentQ4 FY2025
Non-GAAP Operating Margin37.3%
Product Gross Margin66.9%
Service Gross Margin86.8%
Free Cash Flow Margin30.3%

Management tone

Narrative arc: Services-led / waiting for product → Product inflecting → Product accelerating + SASE #1 ambition + AI-driven SecOps disclosed → SASE as dominant pillar + firewall market share leadership claim + competitive moat language hardening.

SASE rhetoric has hardened from ambition to declaration. Two quarters ago the framing was "SASE firewall is displacing both legacy NGFW and pure-play SASE." One quarter ago it became "we will be the number one SASE market leader in the next few years." This quarter management opened with "Fortinet is the fastest growing SASE leader at scale" — present tense, no qualifier. The supporting math (Unified SASE billings +40%, 27% of total, Unified SASE ARR $1.28B with FortiSASE ARR +90%) finally aligns with the rhetoric.

Sovereign SASE escalated from "potential differentiator" to "exclusive competitive moat." In Q2 Ken framed sovereign SASE as taking "half the market share" of cloud SASE within a few years — a forward-looking thesis. This quarter the language is operational: "none of our major SASE competitors offer [Sovereign] SASE solution, making Fortinet's total unified SASE addressable market significantly greater than our peers." The shift from "we think this could be big" to "no one else can compete here" is the most prescriptive competitive claim in the four-quarter sequence and is what justifies management's confidence in being able to sustain product revenue growth of 10–15% over the midterm.

AI was upgraded from theme to operating model, with discrete disclosure preserved but mixed. Q2 had AI as a tailwind. Q3 introduced "AI-driven SecOps billings +33%" as a discrete pillar. This quarter management disclosed AI-driven secure ops billings +6% in Q4 and +22% for the full year, with AI overall up 21%, alongside "more than 20 AI-powered solutions" and FortiOS 8.0 with "agentic AI security." The Q4 single-quarter deceleration to +6% is sharp versus the Q3 print and worth pressing on; the FY +22% figure is the cleaner trend.

Margin philosophy looks structurally tighter, not just conservatively guided. Two consecutive quarters of 36–37% non-GAAP operating margin against guides of 32.5–35.5% is a pattern. The FY2026 non-GAAP operating margin range of 33.0–36.0% — with midpoint ~100bps below FY2025 actual of 35.5% — signals management is implicitly acknowledging Q3/Q4 included opex underspend that won't repeat, specifically infrastructure investment for sovereign SASE data centers (guided at $350–450M for FY2026). The Q1 guide of 30.0–32.0% is the punchline: 530bps step-down from Q4. Either Q1 is genuinely the spend-heavy quarter or this is sandbagging at a level not seen earlier in the year.

Product growth durability claim was extended and quantified. Q3 framed 10–15% as the "normal case" for the next 5–10 years. This quarter management stated they can "sustain product revenue growth of 10% to 15% over the midterm on average" — same band but now explicitly attached to the midterm and "on average," acknowledging Q4's 20% print is above the band. The implicit message: enjoy the 20% prints now, model 12–13% long-term.

Recurring themes management leaned on this quarter:

Unified SASE leadership and accelerating adoption at enterprise scalePlatform consolidation driving customer wallet share expansion and multi-vendor displacementAI-driven security solutions gaining traction across enterprise and OT environmentsOperational technology (OT) security emerging as significant growth driver (25%+ billings growth)FortiOS convergence of networking and security enabling pricing power and cost advantageRule of 45 sustainability demonstrating balanced growth and profitability model

Risks management surfaced:

USD weakness creating modest headwind in Q1 2026Forward-looking statements subject to risks and uncertainties per SEC filingsTiming of marketing events impacting Q1 operating marginCompetitive SASE displacement wins requiring continued price-for-performance differentiationData center infrastructure investment requirements (350-450M capex guidance)

Q&A highlights

Shaul Ayal · TD Cohen

What drove the strength in unified SaaS billings and strong 2026 guidance?

Management highlighted three key advantages: (1) sovereign SASE market growth with exclusive solving SASE approach, (2) integration of network security, SD-WAN, and SASE in single OS, (3) cost advantage with infrastructure investment enabling one-third lower costs than competitors. Execution was broad-based across enterprise, OT, and AI-driven initiatives.

Unified SASE billings growth of 40%Sovereign SASE market likely larger than public SASE marketCost advantage approximately one-third compared to competitorsAI as major 2026 growth driver

Saket Kalia · Barclays

How is management navigating memory supply chain issues and pricing pressures in 2026 guidance?

Management emphasized 6-month inventory buffer built during COVID period, maintaining healthy margins through cost management and selective price increases. Technology advantages (ASIC delivering 5-10x performance) provide competitive cushion despite cost pressures. Service revenue recovery expected in 2026 from product revenue growth and shift to higher-margin unified SASE/AI-driven SecOps solutions.

6-month inventory buffer maintainedASIC delivers 5-10x better performance at equivalent costMemory represents 10-20% of bill of materialsService revenue recovery expected in 2026

Gabriela Borges · Goldman Sachs

What is the pipeline opportunity from 2020-2021 hardware refresh cohorts and willingness to upgrade across the platform?

Management indicated refresh cycle driven more by new functionality demand (SASE, ZTNA, internal segmentation, AI protection) than hardware aging. End-of-support on 11.x products may extend with paid maintenance rather than forced replacement. Growth primarily from new functions and market requirements rather than traditional refresh cycles.

FortiOS 11.x end-of-support extension option being offeredHardware refresh cycle historically 5-6 yearsNew functionality (SASE, ZTNA, segmentation, AI) primary growth driverUnified SASE growth of 40% driven by new demand vs. refresh

Fatima Bulani · Citi

How is Fortinet achieving 40% unified SASE growth and 20%+ product growth without cannibalization of branch/network security refresh opportunities?

Management asserted SASE is complementary to, not replacing, traditional network security. Differentiation through 3-in-1 solution (networking, network security, SASE in single device) provides customer value unavailable from competitors. Branch offices still require physical device; SASE enables additional service layers on existing infrastructure.

Unified SASE and product revenue growing simultaneously3-in-1 solution (40-gate) unique competitive advantageSASE viewed as additive business opportunityPricing actions implemented between 5-20% on specific products

Patrick Colville · Scotiabank

What is Fortinet's M&A philosophy for 2026 given peers accelerating acquisitions, and will pricing actions continue?

Management indicated pricing power on 5-20% range for appliances in 2026 with monthly adjustment capability. On M&A, preference for internal innovation over market/customer base acquisitions; maintaining discipline on Rule of 45 and margin targets. Openness to tuck-in deals in SecOps area when market conditions warrant.

Pricing increases targeted at 5-20% across appliances in 202630-day notification cycle to distributors on price changesM&A philosophy favors technology and talent acquisitions over market share purchasesRule of 45 discipline maintained for 25 years

Answers to last quarter's watch list

Q4 operating margin holds above 36% versus guided 34.5–35.5% — Resolved positively. Q4 non-GAAP operating margin printed 37.3%, 40bps above Q3's 36.9% and 180bps above the guide ceiling. Second consecutive quarter of 36%+ against a sub-36% guide. The FY2026 guide of 33.0–36.0%, with midpoint ~100bps below FY2025's 35.5% actual, signals management is implicitly acknowledging some Q3/Q4 opex underspend.
Resolved positively
Service revenue stabilizes at 12–13% or decelerates further — Resolved negatively on recognized revenue; mitigated on billings. Service revenue grew 11.8% in Q4 (tenth consecutive quarter of recognized-revenue deceleration), but service billings grew +18% in Q4 — per management the recognized-revenue lag is a recognition issue, not demand. The FY2026 service revenue guide midpoint implies ~+11% growth, with H2 2026 reaffirmed as the inflection. Status: Resolved negatively on recognized revenue, mitigated by service billings.
AI-driven SecOps billings sustains 30%+ and gets a dollar disclosure — Partially resolved. Management disclosed AI-driven secure ops billings +6% in Q4 and +22% for the full year (vs. Q3's +33%). The growth-rate disclosure was preserved, but the Q4 single-quarter print decelerated sharply. No dollar figure provided. Status: Partially resolved — metric retained, growth rate decelerated.
$1M+ deal dollar value growth deceleration continues — Resolved. Q4 disclosure: $1M+ deal count +30%, total deal value +40%, with US and Europe each +30%+. The total deal value growth of +40% is above the Q3 +30%+ disclosure, suggesting the trend did not decelerate.
Resolved positively
FY2026 initial guide shape — anchored to 10–15% or higher; rule-of-45 framing upgraded — Resolved negatively (for bulls). Management explicitly stated "we can sustain product revenue growth of 10% to 15% over the midterm on average" — declining to anchor to the higher Q3/Q4 run rate of 18–20%. Rule of 45 framing was reaffirmed (seventh consecutive year targeted) but not upgraded. The FY2026 revenue guide of $7.5–7.7B (+10.3–13.2%) sits at the low end of the historical billings/revenue CAGR commitment of "above 12%.".
Resolved negatively
SASE market share progress quantified against "#1 in a few years" ambition — Resolved positively. Management disclosed firewall unit market share of 55% as a new headline metric, 16% of large enterprise customers buy FortiSASE (+50% penetration), Unified SASE ARR $1.28B (+11%), and FortiSASE ARR +90%.
Resolved positively

What to watch into next quarter

Whether Q1 FY2026 non-GAAP operating margin holds above the guided 30.0–32.0% range, and by how much. Q3 beat by 340bps; Q4 beat by 180bps. A third consecutive 100bps+ beat would confirm the guide is structurally conservative and that the FY2026 operating margin range is being deliberately set low — implying real FY2026 EPS power well above $3.00. A guide-print of 31–32% would suggest the Q3/Q4 prints did include non-recurring underspend.

Whether service recognized-revenue growth holds 11–12% or breaks below 11%, and whether service billings sustains the +18% Q4 pace. The FY2026 service revenue guide midpoint of ~+11% is consistent with current recognized-revenue trajectory; service billings at +18% is the leading indicator that would validate management's H2 2026 inflection commitment.

Whether AI-driven SecOps billings growth reaccelerates off the Q4 +6% print. The Q4 single-quarter print decelerated sharply versus Q3's +33%, even as FY came in at +22%. Whether Q1 reverts to a 20%+ pace will determine whether Q4 was a timing anomaly or the start of a real slowdown.

FY2026 product revenue trajectory against the 10–15% "midterm average" framing. Q4 printed +20%, well above the band. Whether Q1 holds in the high teens or reverts toward 12–13% will determine whether the FY2026 guide is sandbagged or whether management's "midterm average" framing is signaling genuine deceleration.

Sovereign vs. public SASE revenue mix disclosure. Ken stated he believes the sovereign SASE TAM is "even bigger" than public SASE and "probably pretty close to each other right now" in current revenue mix, but declined to give a specific split. A disclosed mix would let the market size the moat claim.

Pricing yield realization. Management disclosed 5–20% pricing increases on specific products with monthly adjustment capability. Tracking whether realized ASPs move materially in Q1/Q2 will indicate whether the pricing lever is contributing to the FY2026 guide or is held in reserve.

Sources

  1. Fortinet Q4 2025 press release / 8-K exhibit: https://www.sec.gov/Archives/edgar/data/1262039/000126203926000003/ftntq4-2025ex991.htm
  2. Tapebrief Q3 2025 prior brief.
  3. Tapebrief Q2 2025 prior brief.

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