Kulicke and Soffa Industries, Inc. (KLIC)

K&S makes the machines, and the consumable tools they use, that assemble semiconductor devices: integrated circuits, power discretes, LEDs and sensors for automotive, compute, industrial, memory and communications markets. Its core is wire bonding, which connects a chip to the package around it with fine wire, and a majority of revenue comes from it: ball bonders are the largest line, while wedge bonders use ribbon or heavy wire for power electronics, cars and other semiconductor work. Beyond wire it sells advanced packaging machines, among them the APTURA thermo-compression bonder, which joins chips with heat and pressure for chiplet packages, plus die-attach, advanced display and dispensing systems. It also services, repairs and upgrades machines and sells consumable tools and spares, for its own equipment and for its peers'. 2930313233343536

How it operates

K&S makes the machines, and the consumable tools they use, that assemble semiconductor devices: integrated circuits, power discretes, LEDs and sensors for automotive, compute, industrial, memory and communications markets. Its core is wire bonding, which connects a chip to the package around it with fine wire, and a majority of revenue comes from it: ball bonders are the largest line, while wedge bonders use ribbon or heavy wire for power electronics, cars and other semiconductor work. Beyond wire it sells advanced packaging machines, among them the APTURA thermo-compression bonder, which joins chips with heat and pressure for chiplet packages, plus die-attach, advanced display and dispensing systems. It also services, repairs and upgrades machines and sells consumable tools and spares, for its own equipment and for its peers'. 2930313233343536

Its buyers are integrated device manufacturers, the chip companies that assemble in house, outsourced semiconductor assembly and test providers, which package and test chips for others, foundries, and makers of electronics and automotive electronics. There are not many of them: the ten largest took 54.8% of fiscal 2025 revenue, against 53.6% a year earlier. One, Tianshui Huatian Technology, took 12.0%, the only customer above a tenth of revenue, and no customer had reached that mark in the two years before. At the year end Huatian also owed 30.3% of all money due from customers, up from 17.2%, and Haoseng Industrial 13.0%. K&S sells mainly through its own sales force, with agents and distributors for some products and regions, and keeps sales and support people near customers' plants, from Singapore, China, Taiwan and Korea to Germany, Mexico and the Netherlands. 373839404142

By destination, China took 363.6 million dollars, 55.6% of fiscal 2025 revenue, down 12.7% on the year; the United States 9.5%, Taiwan 8.4%, Malaysia 7.0% and South Korea 4.2%, the one market to more than double, up 137.9%. More than nine tenths of revenue went to customer sites outside the United States, and 53.5% to customers headquartered in China. Where a machine lands is not always where its buyer sits: customers headquartered in the United States may ask for delivery to their back-end plants in China. By end market, general semiconductor sales, the largest, held level and aftermarket sales barely moved, while automotive and industrial fell by about a fifth and memory by more than a quarter. 36434445

Its own factories mostly assemble and test machines built from bought-in parts. K&S keeps an outsource model to hold down fixed costs and capital spending, makes only low-volume, highly customized subassemblies itself, and depends on a single or a limited number of sources for many parts. Ball and wedge bonders, the AT Premier series and the APAMA, APTURA and Katalyst bonders are built in Singapore, at the Serangoon site that is also a corporate headquarters and the largest the company lists; the hybrid and electronic assembly machines in the Netherlands and Singapore; the dispensing machines in Taiwan. Dicing blades, capillaries, which are the tool tips that guide the wire in a bonder, and part of the bonding wedges are made in Suzhou in China, and capillaries also in Haifa in Israel. 464748495051

It builds to purchase orders and forecasts rather than long-term supply contracts, and a majority of orders can be cancelled or deferred with limited or no penalty, so revenue follows what customers decide to spend on capacity. Equipment ships with a one-year warranty; revenue is recorded when a machine ships or is delivered, or, where the customer tests and accepts it on site, only after that. The aftermarket line of tools, spares and services has historically moved least with the cycle, because it follows how many chips are being made rather than how much new capacity is being built. 5253545556

The specifics

K&S dates itself to 1951 and was incorporated in Pennsylvania in 1956; it keeps principal offices in Singapore and in Fort Washington, Pennsylvania. It has been cutting back to its core. In October 2024 it sold its lithography business, Kulicke & Soffa Liteq, to Onto Innovation. On March 25, 2025 the board approved a plan to cease the Electronics Assembly equipment business, built in the Netherlands and Singapore, to put core semiconductor assembly first and steady results through the cycle. That wind-down cost a 31.5 million dollar inventory write-down and 39.9 million of impairment charges in fiscal 2025, including a full write-off of 19.2 million of goodwill, and the company expects it to be substantially complete in fiscal 2026, leaving service support for the customers still owed it. 575859606162636448

Project W shows what one customer can do to a line of business. K&S was engaged by a customer it does not name to develop, and later mass-produce, certain advanced display technologies; after a strategic review of its own business the customer cancelled. In fiscal 2024 K&S wrote down 57.3 million dollars of inventory and took 44.5 million of impairment charges on the long-lived assets tied to the project. On November 4, 2024 the customer agreed to pay 86.2 million dollars towards the costs it had incurred: 15.1 million was booked as revenue for products delivered and 71.1 million as a gain, and the money arrived in the quarter ended March 29, 2025. 65666367

Its edge, in its own telling, is process know-how. Working with customers and with material and equipment suppliers, it developed production processes that made copper wire widely accepted for bonding and significantly cut the cost of assembling an integrated circuit. Newer machines reach past wire: the APAMA and APTURA lines for 2.5D and 3D packages, where chips sit side by side or stacked, and the ATPremier MEM PLUS, which uses vertical wire for dense DRAM and NAND memory. The company holds a number of United States patents but says much of its important technology sits in trade secrets and proprietary software, which makes people the weak point: it has learned that certain former employees in China, who had access to materials on its products and designs, may have passed them to their new employer, a direct competitor, and it is investigating and may go to court. 6869707172

It names its rivals: in equipment ASM Pacific Technology, Hesse, Han's Laser Technology, BE Semiconductor Industries, Hanwha Precision Machinery, Panasonic, Yamaha Robotics and Nordson; in consumables PECO, Disco, Small Precision Tools and Chaozhou Three-Circle. Two pressures stand out. Chinese makers, helped by government incentives as China builds domestic capacity, can charge less, which has pulled down the company's average selling prices in China. And the packaging methods that could replace wire, hybrid bonding, thermo-compression, flip chip and wafer-level packaging, remove the need for wires between a chip and its package, a risk the company flags because a majority of its revenue comes from wire bonding. Export rules bite too: some advanced packaging products, built on United States technology, cannot be sold to Huawei or others on the Entity List, though the company says those rules have had no material direct impact on it so far. 737475763177

What drives growth, line by line

Revenue fell 7.4% in fiscal 2025 to 654.1 million dollars, a fourth yearly decline in a row and less than half the 1.5 billion of fiscal 2021. The company points to lower volumes in ball bonders, the aftermarket line and the smaller businesses, partly offset by wedge bonders and advanced solutions, and says customers who had built up stocks of its products over the past three years were still cutting their order rates to work them down. After the wind-down charges and the Project W gain, the year ended with an operating loss of 3.2 million dollars and net income of 213.0 thousand. 7879808163

Ball Bonding Equipment. The largest line: 293.0 million dollars, 44.8% of revenue, down 18.1% from 357.8 million. Customers bought fewer ball bonders for general semiconductor and memory work, with factory use steady in some regions and investment held back by uncertainty about the economy. The line's gross margin still rose, to 50.0% from 47.7%, on a better mix of products and of customers. 36828384

Aftermarket Products and Services APS. 156.1 million dollars, 23.9% of revenue, down 2.4%, on fewer spares and services sold and weaker pricing for bonding tools. Its gross margin fell to 48.3% from 55.6%, largely because spares for the discontinued Electronics Assembly machines were written down. This is the steadiest line in the company, tied to how many chips are made rather than to how much capacity is added. 3685868354

Wedge Bonding Equipment. 110.6 million dollars, 16.9% of revenue, up 4.5%: more machines sold for general semiconductor work, partly offset by fewer for automotive. Its gross margin slipped to 45.1% from 46.7% on a less favorable mix of products and of customers. 36878883

Advanced Solutions. 72.7 million dollars, 11.1% of revenue and the fastest-growing line, up 37.6%, on more purchases of LED equipment, counted in the industrial end market, and for general semiconductor work. Its gross margin came back to 58.0% from negative 81.8%, the year when inventory written down for the cancelled Project W pushed costs above sales. 36899083

All Others. The smallest line, 21.7 million dollars, 3.3% of revenue, down 27.0% on fewer purchases for general semiconductor work. It holds the dispensing, electronics assembly and some display and die-attach systems, and it carried most of the Electronics Assembly wind-down: the write-downs drove its gross margin to negative 164.4%, from 9.2% a year earlier. 369135929383

Orders turned before revenue did. Bookings for fiscal 2025 ran well above both the year's revenue and the previous year's bookings, and the backlog of orders due to ship within twelve months ended the year about two thirds larger than a year before, though the company warns that a majority of orders can be cancelled or deferred. In its own words it anticipates long-term growth in semiconductor consumption while trade-related weakness in demand from China persisted in fiscal 2025 and beyond, and it expects capital spending of 8.0 to 12.0 million dollars in fiscal 2026. 9495539697

The newest quarterly report shows the turn reaching revenue. Revenue for the nine months to July 4, 2026 was 62.1% higher than in the same months a year before, and 122.6% higher in the latest quarter alone. Ball bonders led: their sales rose by 294.6 million dollars over the nine months, most of it for general semiconductor work and 57.0 million of it in memory, which the company puts down to customer technology transitions and better demand. Wedge bonders went the other way, down 30.6 million, as capacity needs for electric vehicles fell. 9899100101

The read's section on the people who run it is on the People tab.

What the desk infers Inferred

1. Inferred

   The swing of Advanced Solutions to an operating profit in fiscal 2025 rests mostly on the one-off Project W reimbursement booked inside that segment, not on what the line itself sold.

   Because

   • Project W was advanced display work, and advanced display is part of what the Advanced Solutions segment reports. 6534
   • The 71.1 million dollar reimbursement from the Project W customer was counted as a gain relating to cessation of business in fiscal 2025. 81
   • The segment table's selling, general and administrative total, 131,529 thousand dollars, is lower than the 167,699 thousand in the results table by the gain of 75,987 thousand less the impairment charges of 39,817 thousand, so the segment rows carry that gain. 102103
   • In that table Advanced Solutions is the only segment whose selling, general and administrative line is a credit rather than a cost. 102
   • The reimbursement is larger than the line's whole reported income from operations of 49,411 thousand dollars, which followed a loss of 155,350 thousand a year earlier. 10481
   Confidence 80 of 100Wrong if A company statement or segment note placing the Project W reimbursement outside Advanced Solutions, or showing that the line's own operations, before any gain, earned an operating profit in fiscal 2025.
2. Inferred

   Project W was a build-out dedicated to one customer rather than a product for many buyers: K&S fitted out capacity for it, and when the customer cancelled those assets had no other use, which is why the customer paid the costs back.

   Because

   • The work was to support one customer with the development and future mass production of certain advanced display technologies. 65
   • Capital spending in Advanced Solutions was 30,522 thousand dollars in fiscal 2023, against 804 thousand in fiscal 2024 and 125 thousand in fiscal 2025. 105
   • When the project was cancelled the future cash flows of its long-lived assets were projected as zero and they were written off in full, 38.0 million dollars of that property, plant and equipment, mostly leasehold improvements. 106
   • The customer then agreed to pay 86.2 million dollars to reimburse the costs and expenses incurred on the project. 67
   Confidence 70 of 100Wrong if A filing showing that the capacity built for Project W was turned to other customers' orders, or that the capital spent in Advanced Solutions in fiscal 2023 went to programs other than Project W.
3. Inferred

   The recovery that followed fiscal 2025 has been led by chip assemblers in China buying ball bonders, which leaves the company leaning on a handful of Chinese buyers more than it did before.

   Because

   • In fiscal 2025 only Tianshui Huatian Technology passed a tenth of revenue, at 12.0%; in the nine months to July 4, 2026 three customers did, Tianshui Huatian Technology at 13.8%, Haoseng Industrial at 14.8% and Changjin Technology (Shanghai) at 10.4%. 39107
   • Two of those three carry Chinese place names, Tianshui and Shanghai, and the share of revenue from customers headquartered in China rose to 56.4% for the nine months from 51.3% a year earlier. 107108
   • Ball bonders drove the rise, up 294.6 million dollars over those nine months, most of it for general semiconductor work, which the company puts down to customer technology transitions and better demand. 100
   • The company's direct buyers are mainly chip makers that assemble in house and outsourced assembly and test providers. 37
   • The turn showed first at Huatian: its share was 10.1% of revenue in the first nine months of fiscal 2025 and 12.0% for the full year, and it owed 30.3% of all customer money due at the year end, up from 17.2%. 1073940
   Confidence 60 of 100Wrong if A filing showing that most of the increase in ball bonder sales in fiscal 2026 went to customers headquartered outside China, or that these large customers are distributors shipping mainly outside China.