Tabular Disclosure of Contractual Obligations The following summarizes our contractual obligations at September 30, 2012, and the effect such obligations are expected to have on our liquidity and cash flow in future periods. Contractual Obligations (In millions) Total $172.8 Less Than 1 Year $10.9 1–3 Years $26.3 3–5 Years $135.6 After 5 Years $— Long-term debt Interest expense and fees on long-term debt Purchase obligations Operating leases Other long-term liabilities* Total contractual obligations 13.2 27.0 8.4 7.1 $228.5 3.7 26.0 2.8 — $43.4 6.2 0.3 3.3 — $36.1 3.3 0.3 1.8 — $141.0 — 0.4 0.5 7.1 $8.0 *We have excluded $2.0 million in deferred tax liabilities from the other long-term liability amounts presented as the deferred taxes that will be settled in cash are not known and the timing of any such payments is uncertain. Interest Expense and Fees on Long-Term Debt Interest payments on long-term debt reflect LIBORbased floating rates in effect at September 30, 2012. Commitment fees are based on our estimated consolidated leverage ratio in future periods. See Note 9 of the Notes to the Consolidated Financial Statements for additional information regarding our long-term debt. Purchase Obligations We have entered into multi-year supply agreements with Cabot Corporation, our former parent company which is not a related party, for the purchase of certain fumed metal oxides. We purchase fumed silica primarily under a fumed silica supply agreement with Cabot Corporation that became effective in January 2004, and was amended in September 2006 and in April 2008, the latter of which extended the termination date of the agreement from December 2009 to December 2012 and also changed the pricing and some other non-material terms of the agreement to the benefit of both parties. We are generally obligated to purchase fumed silica for at least 90% of our six-month volume forecast for certain of our slurry products, to purchase certain minimum quantities every six months, and to pay for the shortfall if we purchase less than these amounts. We are currently working with Cabot Corporation to negotiate the terms of a new fumed silica supply agreement that we anticipate would take effect following the expiration of the current agreement; however, the terms of the new agreement may be different from those in the current agreement. Since December 2001, we have purchased fumed alumina primarily under a fumed alumina supply agreement with Cabot Corporation that expired in December 2011. We are now operating under a renewed fumed alumina supply agreement with Cabot Corporation, which expires in April 2013, under which we are obligated to pay certain fixed, capital and variable costs, and have certain take-or-pay obligations. We currently anticipate we will not have to pay any shortfall under these agreements. Under these agreements, Cabot Corporation continues to be our exclusive supplier of certain quantities and types of fumed silica and fumed alumina for certain products we produced as of the effective dates of these agreements. Subject to certain terms, Cabot Corporation is prohibited from selling certain types of fumed alumina to third parties for use in CMP applications, as well as engaging itself in CMP applications. If Cabot Corporation fails to supply us with our requirements for any reason, including if we require product specification changes that Cabot Corporation cannot meet, we have the right to purchase products meeting those specifications from other suppliers. We also may purchase fumed alumina and fumed silica from other suppliers for certain products, including those commercialized after certain dates related to these agreements and their amendments. Purchase obligations include an aggregate amount of $9.0 million of contractual commitments related to our Cabot Corporation agreements for fumed silica and fumed alumina. Operating Leases We lease certain vehicles, warehouse facilities, office space, machinery and equipment under cancelable and noncancelable operating leases, most of which expire within ten years of their respective commencement dates and may be renewed by us. Operating lease obligations also include certain costs associated with our pad finishing operation located at Taiwan Semiconductor Manufacturing Company, which are accounted for as operating lease payments. Other Long-Term Liabilities Other long-term liabilities at September 30, 2012 consist of liabilities related to our Japan retirement allowance, which represents approximately $5.7 million, our liability for future payments to be made under our Cabot Microelectronics Supplemental Employee Retirement Plan and our liability for uncertain tax positions. 31