LITE · Q1 2027 Earnings

Bullish

Lumentum

Reported August 11, 2026

30-second summary

Q4 FY2026 delivered revenue of $1.006B (+109% YoY, +25% QoQ), non-GAAP EPS $3.23 vs. a $2.85–$3.05 guide, and non-GAAP operating margin 36.6% vs. a 35.0–36.0% guide. Management then guided Q1 FY2027 to $1.225–1.275B revenue and 39.5–40.5% operating margin, hitting the $1.25B "target model" more than a quarter ahead of schedule. Every prior forward marker has again been compressed; the $2B quarterly goal is now the last remaining bar.

Headline numbers

EPS

Q1 FY2027

$3.23

+8.8% vs est.

Revenue

Q1 FY2027

$1.01B

+109.3% YoY

+1.9% vs est.

Gross margin

Q1 FY2027

50.4%

Operating margin

Q1 FY2027

36.6%

Key financials

Q1 FY2027

Metric	Q1 FY2027	Q1 FY2026	YoY	Q3 FY2026	QoQ
Revenue	$1.01B	$0.53B	+88.5%	$0.81B	+24.5%
EPS	$3.23	$1.10	+193.6%	$2.37	+36.3%
Gross margin	50.4%	34.0%	+1640bps	44.2%	+620bps
Operating margin	36.6%	1.3%	+3530bps	21.6%	+1500bps

Guidance

Lumentum crushed Q4 FY2026 guidance across revenue, EPS, and margins, and is now guiding Q2 FY2027 results at nearly 25% higher revenue than Q4 FY2026, signaling explosive AI-driven acceleration.

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

Actuals vs prior guidance

Metric	Period	Prior guide	Actual	Δ	Result
Revenue	Q4 FY2026	$0.96B to $1.01B	$1.0063B	+0.6% above high end of guide	Beat
Non-GAAP EPS	Q4 FY2026	$2.85 to $3.05	$3.23	+6% to +13% above guide range	Beat
Non-GAAP Operating Margin	Q4 FY2026	35.0% to 36.0%	36.6%	+60 bps above high end of guide	Beat

New guidance

Metric	Period	Guide	YoY
Revenue	Q2 FY2027	$1.225B to $1.275B	+82.8% to +90.3% YoY
Non-GAAP EPS	Q2 FY2027	$4.05 to $4.35	—
Non-GAAP Operating Margin	Q2 FY2027	39.5% to 40.5%	—

Product revenue

Q1 FY2027

Segment	Q1 FY2027	Q1 FY2026	YoY
Components	$0.649B	$0.379B	+71.3%
Systems	$0.357B	$0.155B	+130.9%
Components Revenue	$649.4M	—	—
Systems Revenue	$356.9M	—	—

Management tone

Transcript not available; the tone read below is drawn from press-release commentary and the cross-quarter arc against prior briefs.

Narrative arc: Q4 FY25 "AI inflection, $600M target" → Q1 FY26 "supply gap 25–30%" → Q2 FY26 "pricing flowing into 40s" → Q3 FY26 "$2B goal very much on track" → Q4 FY26 "target model reached a quarter ahead of schedule; TAM expanding."

Target-model achievement replaces target-model pursuit as the narrative center. Four consecutive quarters were framed around chasing forward revenue markers ($600M → $750M → $985M). This quarter management explicitly states the $1.25B Q1 FY27 guide "reach[es] our target model more than a quarter ahead of schedule" — the frame has shifted from pursuing to overshooting. Verbatim from the press release: "AI demand drives our Q1 revenue guidance midpoint to $1.25 billion, reaching our target model more than a quarter ahead of schedule." What this signals: management now expects to update the target model itself, which historically has preceded a formal $2B fiscal-year commitment.

TAM expansion joins revenue and margin as a third pillar. In Q3, the story was supply allocation and margin mechanics; both remain, but this quarter introduced a new strategic disclosure: "optics are starting to penetrate in-rack connectivity, significantly upping our optical TAM." In-rack connectivity has historically been copper's domain — Lumentum flagging optical penetration into rack-scale is a category shift, not a share shift. Combined with OCS and cloud module ramps "beginning to layer in," the framing has moved from executing on a defined opportunity to sizing an expanding one.

"Trajectory continues to accelerate" replaces "on track." Q3's headline framing was "very much on track" to the $2B goal. Q4 shifts to "our trajectory continues to accelerate as AI demand drives growth" — an active-tense escalation. Coupled with the fact that the Q1 FY27 guide midpoint of $1.25B represents +24% QoQ growth (vs Q3-to-Q4's +25% QoQ), the acceleration language is at least directionally consistent with the print rather than aspirational.

Answers to last quarter's watch list

Whether Q4 prints non-GAAP operating margin above the 36.0% guide high end. Q4 non-GAAP operating margin printed 36.6%, +60bps above the high end — a fourth consecutive beat of magnitude (Q1 +120bps, Q2 +320bps, Q3 +120bps, Q4 +60bps). The magnitude has moderated as the guide has moved up, but the streak holds. The Q1 FY27 guide of 39.5–40.5% takes the bar another 290–390bps higher. Status: Resolved positively

First disclosure of an FY27 dollar revenue range or a hard $2B quarterly run-rate timeline. Management still has not disclosed a formal FY27 dollar revenue range. The Q1 FY27 guide midpoint of $1.25B annualizes to $5B, but no fiscal-year commitment or $2B arrival date was made on the print. The "target model" language is a step toward it, not the disclosure itself. Status: Continue monitoring

Pump laser supply ramp progress at Rose Orchard. The company didn't quantify the pump laser supply-demand gap on the print. The Q4 gross margin move to 50.4% is consistent with capacity landing without pricing pressure, but the discrete >30% gap figure from Q3 was not refreshed. Status: Continue monitoring

Whether pricing is taken on pump lasers and narrow-line-width lasers. No pump laser pricing commentary on the print. The 250bps QoQ gross margin expansion could reflect pricing, mix, or yield — none broken out. Status: Continue monitoring

OCS customer-count expansion beyond three. No update to the three-customer OCS count on the print, and no discrete backlog figure beyond the prior $400M+. Systems revenue of $357M (+123% YoY) implicitly confirms the OCS ramp is landing, but the customer disclosure did not step up. Status: Continue monitoring

CW laser internalization beyond the disclosed ~20%. No refresh of the ~20% figure disclosed in Q3 for internal CW laser penetration of transceiver modules. Status: Continue monitoring

What to watch into next quarter

Whether Q1 FY27 actuals print non-GAAP operating margin above the 40.5% guide high end. Four consecutive beats of 60–320bps sets the expectation. A fifth beat of magnitude would take LITE's non-GAAP operating margin above 41% — a level no prior sell-side model contemplated 12 months ago.

First formal FY27 dollar revenue range or a $2B quarterly arrival date. With Q1 FY27 guided to $1.25B, sell-side is now free-modeling the $2B bar. Watch for management to convert the "target model" language into a fiscal-year commitment, which would likely come with the Q1 FY27 print.

A refreshed supply-demand gap figure. Q3 disclosed pump laser and OCS gaps at >30%; the Q4 press release did not update either. A narrowing gap on the Q1 FY27 call would confirm capacity is landing; a widening one would confirm demand is still outrunning.

Whether Systems mix continues climbing past 35.5%. OCS is now materially embedded — a further Systems mix step-up would signal the Q3 disclosure of "quite sizable" additional OCS wins is beginning to layer in.

First quantification of the "in-rack connectivity" opportunity. Management flagged optics penetrating in-rack connectivity as "significantly upping our optical TAM" without sizing it. A dollar figure, customer count, or shipment timeline would size what appears to be an entirely new revenue vector.

CW laser internalization percentage step-up beyond ~20%. The Q3 disclosure implied gross margin lift from vertical integration is now embedded. Watch whether the percentage moves into the 30s in Q1 FY27 — that would be a discrete lever for another gross-margin leg.

Sources

Lumentum Q4 FY2026 Press Release / 8-K Exhibit 99.1, SEC EDGAR — https://www.sec.gov/Archives/edgar/data/1633978/000162828026055726/lite_ex991xq4fy26.htm
Prior-quarter tapebrief coverage (Q4 FY25, Q1 FY26, Q2 FY26, Q3 FY26) for cross-quarter guidance arc

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