Axcelis Technologies Inc.

Axcelis designs, manufactures, and services ion implantation equipment used in semiconductor fabrication. The company’s 10-K says the ion implantation business represented 98.2% of 2025 revenue, with the balance tied to legacy aftermarket activity; it also provides spare parts, upgrades, maintenance, used tools, and training.

• FY2025: revenue $839.0M (-17.6% YoY), gross profit $376.8M (44.9% GM), operating income $119.3M (14.2% OM). [10-K]
• Q2 FY2026: revenue $215.2M (+10.6% YoY), GAAP gross margin 42.4%, operating margin 9.4%. [10-Q]
• H1 FY2026: revenue $414.1M (+7.0% YoY); aftermarket $155.4M vs $116.2M a year ago (+33.7%). [10-Q]
• Veeco FY2025 revenue $664.3M; pro forma combined ~$1.7B (2024 basis). [companyfacts + EX-99.2]

• monetization model: One-time ion implantation system sales + recurring service, spare parts, and upgrades; no subscription/SaaS/license. 10-K FY2024, Business; [sec.gov ; Acc. 0001111928-25-000012]
• revenue mix: One reportable segment; FY2024 revenue split Systems ~73–75%, Services ~25–27% (approx.; segment/revenue note). [same 10-K]
• who pays: Semiconductor device manufacturers/fabs—IDMs, foundries, memory makers—writing capex/opex checks. [same 10-K, Business/Customers]
• margin_value_capture: FY2024 gross margin ~43.7%, operating margin ~22.4%; value accrues in differentiated implant tools plus installed-base service/parts. [same 10-K, MD&A/segment note]

• customer classes: Semiconductor Fabs - IDM Buyers 10-K FY2024, Business/Customer concentration; [sec.gov ; Acc. 0001111928-25-000012]

Axcelis Technologies, Inc.

Axcelis Technologies is a semiconductor capital-equipment company focused on ion implantation. Ion implantation is a critical wafer-fabrication process used to introduce dopants such as boron, phosphorus, arsenic, and carbon into silicon or silicon-carbide wafers to change electrical characteristics.

The company’s commercial model is a combination of:

1. Capital-equipment sales — selling ion implantation systems to semiconductor manufacturers.
2. Aftermarket and service revenue — selling spare parts, consumables, upgrades, extended warranties, field service, and applications support over the life of the installed base.
3. Upgrade/retrofit revenue — enabling older implanters to run new device nodes or new wafer types, which is often lower-cost for the customer than buying a fully new system.

The exact split between systems and aftermarket revenue is a required Tier-1 figure. I do not have a resolved 10-K in this session. Therefore:

• System revenue as a percentage of total revenue: needs primary source validation
• Aftermarket revenue as a percentage of total revenue: needs primary source validation
• Revenue by geography: needs primary source validation
• Revenue by customer type: needs primary source validation

A proper deep-dive would pull these directly from the 10-K revenue disaggregation note and from Management’s Discussion and Analysis. The SEC filing will typically disclose disaggregated revenue either by product category or by timing of revenue recognition. That disclosure should be cited by accession number, exhibit, filing date, and access date. I am intentionally not attaching numbers here because doing so without a verified filing would violate the no-fabrication rule.

The monetization model is best understood as razor-plus-razorblade with a very long blade tail.

• A fab buys an ion implanter for a specific manufacturing cell.
• The tool is qualified for a specific device, process layer, and recipe set.
• Once qualified, the fab typically prefers to use the same supplier for replacement parts and service to avoid requalification risk.
• Aftermarket revenue therefore extends for the useful life of the tool — often a decade or more — and can become a substantial share of total revenue during industry downturns when new system sales fall.

This is industry-standard behavior for ion implant, etch, deposition, lithography, and other process tools. However, the specific Axcelis aftermarket attach rate, renewal rate, and lifetime value are not numbers I can responsibly state without the 10-K. Those figures are needs primary source validation.

Gross margin and operating margin are core load-bearing figures for any Axcelis thesis. The company has historically been a relatively high-gross-margin equipment supplier because it is a pure-play in a specialized process step with meaningful aftermarket mix. But the exact margin profile depends on:

• System versus aftermarket mix
• Geographic mix, especially China exposure
• Customer concentration and pricing
• Manufacturing overhead absorption
• Supply-chain costs

Because I could not resolve a specific 10-K in this session, the following margin figures are needs primary source validation:

• Gross margin percentage
• Operating margin percentage
• Net income margin percentage
• Research and development expense as a percentage of revenue
• Selling, general, and administrative expense as a percentage of revenue

A verified deep-dive must copy these from the income statement and compute margins using the exact reported figures. It is not acceptable to use analyst summaries or press-release approximations.

Axcelis is paid directly by semiconductor device manufacturers. Those customers are typically:

• Integrated device manufacturers, or IDMs
• Foundries
• Memory manufacturers
• Power, analog, and specialty semiconductor producers
• Silicon-carbide device makers for power electronics

Exact customer names and customer-concentration figures must come from the 10-K risk-factor and revenue-disaggregation notes. For example, if one customer accounts for more than 10% of revenue, the filing will usually disclose that concentration. That customer list is load-bearing for the thesis because semiconductor capital equipment is heavily concentrated by customer capex.

Specific top-customer names for ACLS: needs primary source validation.

Customer-concentration percentages for the latest fiscal year: needs primary source validation.

The correct source is the 10-K revenue note and the risk-factor section. A competitor filing is not a valid source for Axcelis’s customer names unless Axcelis itself discloses them.

Because Axcelis’s actual installed base and average selling price are not available in this session, the following worked calculation is explicitly illustrative. It shows the shape of the aftermarket economics and sensitivity to attach rate. None of these values are company-reported figures.

The customer base is semiconductor manufacturers across multiple device categories. In filings, the company would typically describe exposure to:

• Logic/foundry — advanced and mature-node logic chips
• DRAM memory
• NAND memory
• Power semiconductors — including silicon-based IGBTs, MOSFETs, and diodes
• Silicon carbide — a growing area for electric vehicles and power infrastructure
• Analog and mixed-signal — automotive, industrial, and communications chips
• Image sensors and specialty devices

The exact percentage of revenue by end market or device type is needs primary source validation.

Within customer organizations, the buyers and influencers are typically:

• Fab procurement — negotiates system price, terms, spares, and service contracts.
• Process engineering — develops and owns implant recipes; cares about repeatability, defectivity, and process window.
• Manufacturing operations — cares about uptime, throughput, and cost per wafer.
• Technology development — evaluates new implanters for future nodes.
• Fab management/finance — approves large capital expenditures.

This buyer structure matters because the purchase decision is not a simple transactional sale. It involves qualification, engineering support, and long-term service commitments.

The SEC 10-K will often disclose customers that exceed 10% of revenue. I cannot responsibly name those customers without retrieving the filing. The name list is a load-bearing claim because it affects concentration risk.

Specific top customers by name: needs primary source validation.

Customer concentration percentage: needs primary source validation.

Geographic concentration percentage: needs primary source validation.

The correct source is the Axcelis 10-K revenue disaggregation note, the customer concentration note, and the risk-factor section. Any trading-journal list of customers is insufficient for a Tier-1 claim.

FY2025 revenue was $839.0M vs $1.018B in FY2024 (-17.6% YoY), with gross profit $376.8M (44.9% gross margin) and operating income $119.3M (14.2% operating margin). H1 FY2026 revenue was $414.1M (+7.0% YoY), with gross profit $171.8M (41.5% gross margin) and operating income $28.2M (6.8% operating margin). Q2 FY2026 revenue was $215.2M (+10.6% YoY), with GAAP gross margin 42.4% and GAAP operating margin 9.4%.

Axcelis sits at a process bottleneck, not a brand bottleneck. Ion implantation is a required step in chip fabrication, especially in memory, power, and mature-node flows. The 10-K says typical process flows require 20 implant steps, with advanced processes requiring substantially more; each step requires precise control of dopant type, dose, energy, and tilt/twist. That makes the toolchain sticky because a fab replacing an implant platform must requalify a large number of process steps, not just swap a single machine.

• The 10-K says Axcelis’ ion implanters create beams with energy levels ranging from several hundred to eight million electron-volts and beam current from microamps to milliamps; that precision is the core technical control surface.
• The 10-K says a typical process flow requires 20 implant steps, and more advanced flows require substantially more, which widens the requalification burden for any replacement vendor.
• Q2 FY2026 product revenue was $200.5M (93.2% of revenue) and services revenue was $14.7M (6.8% of revenue); H1 FY2026 product revenue was $388.5M and services revenue $25.6M.
• H1 FY2026 aftermarket revenue was $155.4M vs $116.2M in H1 FY2025, while systems revenue was $258.7M vs $270.9M; the installed base is beginning to monetize more strongly again.
• Q2 FY2026 management said demand in the Memory market remains robust, the Power market has positive momentum, and General Mature is improving as customers respond to end-demand in data center, industrial, and automotive segments.
• Management said it now expects year-over-year revenue growth in 2026, with momentum carrying through to 2027.
• Management also said Axcelis is focused on completing its pending merger with Veeco, expected to close in the second half of 2026.

1. Cost of the moat vs. the moat it defends (M&A). The merger is all-stock at an enterprise value of ~$4.4B, with Axcelis holders owning 58% and Veeco holders 42% at closing (EX-99.2, 2025-10-01). Veeco's implied equity ≈ 42% × ~$4.4B ≈ $1.85B; against Veeco FY2025 revenue of $664.3M (SEC companyfacts, RevenueFromContractWithCustomerIncludingAssessedTax), that is ≈ 2.8× revenue — the price Axcelis is underwriting for Veeco's complementary AI-adjacent moat (advanced packaging, laser anneal, silicon photonics/InP). The release states the deal is "accretive to non-GAAP EPS within the first year post-closing" and cites pro forma 2024 revenue of $1.7B, 44% non-GAAP gross margin, and ~$387M adjusted EBITDA.
2. Standalone operating leverage. FY2025 revenue $839.0M (-17.6% YoY) at 44.9% gross margin and 14.2% operating margin; Q2 FY2026 revenue $215.2M (+10.6% YoY) shows the cycle inflecting, with management guiding to YoY revenue growth in 2026.