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|                                                           |  |  |
|                                                      |   |   |
| Form 10-K/A                                          |
| (Amendment No. 1)                                         |
| ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE |
| SECURITIES EXCHANGE ACT OF 1934                           |
| For the Fiscal Year Ended March 29, 2015             |
| Commission File No. 0-7647                           |
|                                                      |   |   |

|                                          |
|------------------------------------------|
|                                          |  |  |
|                                     |   |   |
| MINNESOTA                                |   | 41-0771293 |
| (State of Incorporation)                 |   | (I.R.S. EmployerIdentification No.) |
| 2381 Rosegate, Roseville,Minnesota       |   | 55113 |
| (Address of Principal Executive Offices) |   | (Zip Code) |

|                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                             |  |  |  |  |
|                                                                                                                        |   |   |   |   |
| Securities registered pursuant to Section 12(b) of the Act:     |   | COMMON STOCK, PAR VALUE $.05 PER SHARE |
| Name of exchange on which registered:                                                                   |   | NASDAQ Global Market |
| Securities registered pursuant to Section 12(g) of the Act:                                        |   | NONE |
|                                                                                                                        |   |   |   |   |

|                                               |
|-----------------------------------------------|
|                                               |  |  |  |  |  |  |  |  |  |  |
| Large accelerated filer   | ¨ |   | Non-accelerated filer | ¨ |   | Accelerated filer | þ |   | Smaller reporting company | o |

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Table of Contents

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Table of Contents

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|               |
|---------------|
|               |  |  |
|          |   |   |
|          |   | Page |
| PART I   |
| ITEM 1.  | Business | 1 |
| ITEM 1A. | Risk Factors | 3 |
| ITEM 1B. | Unresolved Staff Comments | 6 |
| ITEM 2.  | Properties | 7 |
| ITEM 3.  | Legal Proceedings | 8 |
| ITEM 4.  | Mine Safety Disclosures | 8 |
| PART II  |
| ITEM 5.  | Market for the Company’s Common Equity, Related Shareholder Matters, and Issuer Purchases of Equity Securities | 9 |
| ITEM 6.  | Selected Financial Data | 11 |
| ITEM 7.  | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 11 |
| ITEM 7A. | Quantitative and Qualitative Disclosures about Market Risk | 17 |
| ITEM 8.  | Financial Statements and Supplementary Data | 18 |
| ITEM 9.  | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure | 36 |
| ITEM 9A. | Controls and Procedures | 36 |
| ITEM 9B. | Other Information | 37 |
| PART III |
| ITEM 10. | Directors, Executive Officers, and Corporate Governance | 38 |
| ITEM 11. | Executive Compensation | 39 |
| ITEM 12. | Security Ownership of Certain Beneficial Owners and Management And Related Stockholder Matters | 39 |
| ITEM 13. | Certain Relationships and Related Transactions, and Director Independence | 39 |
| ITEM 14. | Principal Accountant Fees and Services | 39 |
| PART IV  |
| ITEM 15. | Exhibits and Financial Statement Schedules | 40 |

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|         |                                                                                                                                                                                                |
|---------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| • | Receives, stores and distributes various chemicals in bulk quantities, including liquid caustic soda, sulfuric acid, hydrochloric acid, phosphoric acid, potassium hydroxide and aqua ammonia; |

|         |                                                                                                                                                                     |
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| • | Manufactures sodium hypochlorite (bleach), agricultural products and certain food-grade products, including liquid phosphates, lactates and other blended products; |

|         |                                                                                                                                                  |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------|
| • | Repackages water treatment chemicals for our Water Treatment Group and bulk industrial chemicals to sell in smaller quantities to our customers; |

|         |                                                                                                      |
|---------|------------------------------------------------------------------------------------------------------|
| • | Performs custom blending of certain chemicals for customers according to customer formulas; and |

|         |                                                       |
|---------|-------------------------------------------------------|
| • | Performs contract and private label bleach packaging. |

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|        |
|--------|
|        |  |  |  |  |
|   |   |   |   |   |
|   | Group | Location |   | Approx.Square Feet |
|   | Industrial | Camanche, IA |   | 95,000 |
|   |   | Centralia, IL(1) |   | 77,000 |
|   |   | Dupo, IL(2) |   | 64,000 |
|   |   | Minneapolis, MN(3) |   | 9,000 |
|   |   | St. Paul, MN(4) |   | 32,000 |
|   |   | Rosemount, MN(5) |   | 63,000 |
|   |   | St Louis, MO |   | 6,000 |
|   | Water Treatment | Ft. Smith, AR(6) |   | 17,000 |
|   |   | Apopka, FL(6) |   | 32,100 |
|   |   | Big Pine Key, FL(6) |   | 4,200 |
|   |   | Hollywood, FL(6) |   | 5,400 |
|   |   | LaBelle, FL(6) |   | 8,200 |
|   |   | Monticello, FL(6) |   | 5,000 |
|   |   | Starke, FL(6) |   | 4,000 |
|   |   | Webster, FL(6) |   | 6,500 |
|   |   | Eldridge, IA |   | 6,000 |
|   |   | Slater, IA |   | 12,000 |
|   |   | Centralia, IL |   | 39,000 |
|   |   | Havana, IL |   | 16,000 |
|   |   | Peotone, IL(6) |   | 18,000 |
|   |   | Muncie, IN |   | 12,000 |
|   |   | Garnett, KS |   | 18,000 |
|   |   | Frankfort, KY(7) |   | 20,000 |
|   |   | Columbia, MO(6) |   | 14,000 |
|   |   | Billings, MT |   | 9,000 |
|   |   | Fargo, ND |   | 20,000 |
|   |   | Washburn, ND |   | 14,000 |
|   |   | Lincoln, NE(6) |   | 16,000 |
|   |   | Tulsa, OK |   | 7,300 |
|   |   | Sioux Falls, SD |   | 27,000 |
|   |   | Rapid City, SD |   | 9,000 |
|   |   | Fond du Lac, WI |   | 24,000 |
|   |   | Superior, WI |   | 17,000 |
|   | Industrial and Water Treatment | St. Paul, MN(8) |   | 59,000 |
|   |   | Memphis, TN |   | 41,000 |

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|     |                                                                                                                                                                                                                         |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (1) | This facility includes 10 acres of land located in Centralia, Illinois owned by the Company. The facility includes manufacturing capacity and primarily serves our food-grade products and agriculture businesses. |

|     |                                                                                                                           |
|-----|---------------------------------------------------------------------------------------------------------------------------|
| (2) | The land for this manufacturing and packaging facility is leased from a third party, with the lease expiring in May 2023. |

|     |                                                                    |
|-----|--------------------------------------------------------------------|
| (3) | This facility is leased from a third party and is warehouse space. |

|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (4) | Our terminal operations, located at two sites on opposite sides of the Mississippi River, are made up of three buildings, outside storage tanks for the storage of liquid bulk chemicals, including caustic soda, as well as numerous smaller tanks for storing and mixing chemicals. The land is leased from the Port Authority of the City of St. Paul, Minnesota. The applicable leases run through 2018.  We are in negotiations to extend these leases for a period of 15-20 years. |

|     |                                                                                                                                                                                                                                                      |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (5) | This facility includes 28 acres of land owned by the Company. This manufacturing facility was constructed by us and has outside storage tanks for the storage of bulk chemicals, as well as numerous smaller tanks for storing and mixing chemicals. |

|     |                                                                    |
|-----|--------------------------------------------------------------------|
| (6) | This facility is leased from a third party and is warehouse space. |

|     |                                                                                            |
|-----|--------------------------------------------------------------------------------------------|
| (7) | This facility was purchased in fiscal 2015 and will begin operations in early fiscal 2016. |

|     |                                                                                                                                                                                                                                                                                                                                                                      |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (8) | Our Red Rock facility, which consists of a 59,000 square-foot building located on approximately 10 acres of land, has outside storage capacity for liquid bulk chemicals, as well as numerous smaller tanks for storing and mixing chemicals. The land is leased from the Port Authority of the City of St. Paul, Minnesota and the lease runs until 2029. |

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|        |
|--------|
|        |  |  |  |  |  |  |  |  |  |
|   | Quarterly Stock Data |   | High |   | Low |
|   | Fiscal 2015 |   |   |   |   |
|   | 4th Quarter |   | $ | 44.30 |  |   | $ | 36.93 |  |
|   | 3rd Quarter |   | 45.13 |  |   | 33.22 |  |
|   | 2nd Quarter |   | 38.00 |  |   | 34.00 |  |
|   | 1st Quarter |   | 37.75 |  |   | 32.98 |  |
|   | Fiscal 2014 |   |   |   |   |
|   | 4th Quarter |   | $ | 37.29 |  |   | $ | 33.25 |  |
|   | 3rd Quarter |   | 38.21 |  |   | 35.29 |  |
|   | 2nd Quarter |   | 44.00 |  |   | 36.50 |  |
|   | 1st Quarter |   | 41.00 |  |   | 35.92 |  |

|        |
|--------|
|        |  |  |  |  |  |  |  |  |  |
|   | Cash Dividends |   | Declared |   | Paid |
|   | Fiscal 2016 |   |   |   |   |
|   | 1st Quarter |   | — |  |   | $ | 0.38 |  |
|   | Fiscal 2015 |   |   |   |   |
|   | 4th Quarter |   | $ | 0.38 |  |   | — |  |
|   | 3rd Quarter |   | — |  |   | $ | 0.38 |  |
|   | 2nd Quarter |   | $ | 0.38 |  |   | — |  |
|   | 1st Quarter |   | — |  |   | $ | 0.36 |  |
|   | Fiscal 2014 |   |   |   |   |
|   | 4th Quarter |   | $ | 0.36 |  |   | — |  |
|   | 3rd Quarter |   | — |  |   | $ | 0.36 |  |
|   | 2nd Quarter |   | $ | 0.36 |  |   | — |  |
|   | 1st Quarter |   | — |  |   | $ | 0.34 |  |

|                                                             |
|-------------------------------------------------------------|
|                                                             |  |  |  |  |  |  |  |  |
| Period                                                      | Total Number of Shares Purchased | Average Price Paid Per Share | Total Number of Shares Purchased as Part of a Publicly Announced Plan or Program | Maximum Number of Shares that May Yet be Purchased under Plans or Programs |
| 12/29/2014-1/25/2015                                        | — |  | — |  | — |  | 259,980 |  |
| 1/26/2015-2/22/2015                                         | — |  | — |  | — |  | 259,980 |  |
| 2/23/2015-03/29/2015                                        | 19,582 |  | 37.76 |  | 19,582 |  | 240,398 |  |
|          Total | 19,582 |  | — |  | 19,582 |  |   |

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|                                          |
|------------------------------------------|
|                                          |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|                                     |   | Fiscal Years |
|                                     |   | 2015 |   | 2014 |   | 2013 |   | 2012 |   | 2011 |   |
|                                     |   | (In thousands, except per share data) |
| Sales                                    |   | $ | 364,023 |  |   | $ | 348,263 |  |   | $ | 350,387 |  |   | $ | 343,834 |  |   | $ | 297,641 |  |   |
| Gross profit                             |   | 65,791 |  |   | 61,600 |  |   | 56,936 |  |   | 65,868 |  |   | 61,902 |  |   |
| Income from continuing operations        |   | 19,214 |  |   | 18,094 |  |   | 17,108 |  |   | 21,628 |  |   | 20,314 |  |   |
| Basic earnings per common share          |   | 1.82 |  |   | 1.72 |  |   | 1.64 |  |   | 2.09 |  |   | 1.98 |  |   |
| Diluted earnings per common share        |   | 1.81 |  |   | 1.71 |  |   | 1.62 |  |   | 2.08 |  |   | 1.96 |  |   |
| Cash dividends declared per common share |   | 0.76 |  |   | 0.72 |  |   | 0.68 |  |   | 0.64 |  |   | 0.70 |  |   |
| Cash dividends paid per common share     |   | 0.74 |  |   | 0.70 |  |   | 0.66 |  |   | 0.62 |  |   | 0.68 |  |   |
| Total assets                             |   | $ | 248,462 |  |   | $ | 237,193 |  |   | $ | 222,148 |  |   | $ | 204,081 |  |   | $ | 185,005 |  |   |

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|         |                                                                                            |
|---------|--------------------------------------------------------------------------------------------|
| • |     Sales of $364.0 million, a 4.5% increase from fiscal 2014; |

|         |                                                                                                                                     |
|---------|-------------------------------------------------------------------------------------------------------------------------------------|
| • | Gross profit of $65.8 million, or 18.1% of sales, an increase of $4.2 million in gross profit dollars from fiscal 2014; |

|         |                                                                                              |
|---------|----------------------------------------------------------------------------------------------|
| • |     Net cash provided by operating activities of $20.7 million; and |

|         |                                                                                                                 |
|---------|-----------------------------------------------------------------------------------------------------------------|
| • | Cash and cash equivalents and investments available for sale of $50.4 million as of the end of fiscal 2015. |

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|                                                       |
|-------------------------------------------------------|
|                                                       |  |  |  |  |  |  |  |  |  |
|                                                  |   | Fiscal2015 |   | Fiscal2014 |   | Fiscal2013 |
| Sales                                                 |   | 100.0 |  % |   | 100.0 |  % |   | 100.0 |  % |
| Cost of sales                                         |   | (81.9 | )% |   | (82.3 | )% |   | (81.7 | )% |
| Pension withdrawal                                    |   | — |  % |   | — |  % |   | (2.1 | )% |
| Gross profit                                          |   | 18.1 |  % |   | 17.7 |  % |   | 16.2 |  % |
| Selling, general and administrative expenses          |   | (9.7 | )% |   | (9.6 | )% |   | (9.0 | )% |
| Operating income                                      |   | 8.4 |  % |   | 8.1 |  % |   | 7.2 |  % |
| Interest (expense) income, net                        |   | — |  % |   | — |  % |   | 0.1 |  % |
| Income from continuing operations before income taxes |   | 8.4 |  % |   | 8.1 |  % |   | 7.3 |  % |
| Income tax provision                                  |   | (3.1 | )% |   | (2.9 | )% |   | (2.4 | )% |
| Income from continuing operations                     |   | 5.3 |  % |   | 5.2 |  % |   | 4.9 |  % |
| Income from discontinued operations, net of tax       |   | — |  % |   | — |  % |   | — |  % |
| Net income                                            |   | 5.3 |  % |   | 5.2 |  % |   | 4.9 |  % |

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|                                  |
|----------------------------------|
|                                  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|                             |   | Payments Due by Period |
| Contractual Obligation           |   | 2016 |   | 2017 |   | 2018 |   | 2019 |   | 2020 |   | More than5  Years |   | Total |
|                             |   | (In thousands) |
| Operating lease obligations      |   | $ | 2,139 |  |   | $ | 1,916 |  |   | $ | 1,740 |  |   | $ | 1,555 |  |   | $ | 1,388 |  |   | $ | 4,198 |  |   | $ | 12,936 |  |
| Pension withdrawal liability (1) |   | $ | 467 |  |   | $ | 467 |  |   | $ | 467 |  |   | $ | 467 |  |   | $ | 467 |  |   | $ | 6,307 |  |   | $ | 8,642 |  |

|     |                                                                                                                                                                                          |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (1) | The amounts shown in the table above relate to our withdrawal from the CSS multiemployer pension plan.  Payments on this obligation began in fiscal 2014 and will continue through 2034. |

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|                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                         |  |  |  |  |  |  |  |  |
|                                                                                                                                                    |   | March 29, 2015 |   | March 30, 2014 |
| ASSETS                                                                                                                                                  |   |   |   |   |
| CURRENT ASSETS:                                                                                                                                         |   |   |   |   |
| Cash and cash equivalents                                                                                                                               |   | $ | 18,639 |  |   | $ | 33,486 |  |
| Investments available-for-sale                                                                                                                          |   | 14,485 |  |   | 13,843 |  |
| Trade receivables, less allowance for doubtful accounts of $445 for 2015 and $477 for 2014                                                              |   | 40,355 |  |   | 37,946 |  |
| Inventories                                                                                                                                             |   | 37,028 |  |   | 26,192 |  |
| Income taxes receivable                                                                                                                                 |   | 732 |  |   | — |  |
| Prepaid expenses and other current assets                                                                                                               |   | 3,101 |  |   | 3,160 |  |
| Total current assets                                                                                                                                    |   | 114,340 |  |   | 114,627 |  |
| PROPERTY, PLANT, AND EQUIPMENT:                                                                                                                         |   |   |   |   |
| Land                                                                                                                                                    |   | 8,038 |  |   | 8,038 |  |
| Buildings and improvements                                                                                                                              |   | 73,095 |  |   | 68,801 |  |
| Machinery and equipment                                                                                                                                 |   | 60,077 |  |   | 53,089 |  |
| Transportation equipment                                                                                                                                |   | 19,596 |  |   | 17,764 |  |
| Office furniture and equipment including computer systems                                                                                               |   | 11,966 |  |   | 11,183 |  |
|                                                                                                                                                    |   | 172,772 |  |   | 158,875 |  |
| Less accumulated depreciation                                                                                                                           |   | 79,042 |  |   | 68,406 |  |
| Net property, plant, and equipment                                                                                                                      |   | 93,730 |  |   | 90,469 |  |
| OTHER ASSETS:                                                                                                                                           |   |   |   |   |
| Goodwill                                                                                                                                                |   | 11,750 |  |   | 7,392 |  |
| Intangible assets, less accumulated amortization of $3,933 for 2015 and $3,069 for 2014                                                                 |   | 11,154 |  |   | 8,509 |  |
| Long-term investments                                                                                                                                   |   | 17,249 |  |   | 15,852 |  |
| Other                                                                                                                                                   |   | 239 |  |   | 344 |  |
| Total other assets                                                                                                                                      |   | 40,392 |  |   | 32,097 |  |
| Total assets                                                                                                                                            |   | $ | 248,462 |  |   | $ | 237,193 |  |
| LIABILITIES AND SHAREHOLDERS’ EQUITY                                                                                                              |   |   |   |   |
| CURRENT LIABILITIES:                                                                                                                                    |   |   |   |   |
| Accounts payable — trade                                                                                                                          |   | $ | 20,083 |  |   | $ | 18,306 |  |
| Dividends payable                                                                                                                                       |   | 4,038 |  |   | 3,823 |  |
| Accrued payroll and employee benefits                                                                                                                   |   | 6,122 |  |   | 5,555 |  |
| Deferred income taxes                                                                                                                                   |   | 2,698 |  |   | 2,900 |  |
| Income tax payable                                                                                                                                      |   | — |  |   | 1,444 |  |
| Other current liabilities                                                                                                                               |   | 3,402 |  |   | 3,801 |  |
| Total current liabilities                                                                                                                               |   | 36,343 |  |   | 35,829 |  |
| PENSION WITHDRAWAL LIABILITY                                                                                                                            |   | 6,589 |  |   | 6,887 |  |
| OTHER LONG-TERM LIABILITIES                                                                                                                             |   | 1,588 |  |   | 1,878 |  |
| DEFERRED INCOME TAXES                                                                                                                                   |   | 9,978 |  |   | 10,186 |  |
| Total liabilities                                                                                                                                       |   | 54,498 |  |   | 54,780 |  |
| COMMITMENTS AND CONTINGENCIES                                                                                                                           |   | — |  |   | — |  |
| SHAREHOLDERS’ EQUITY:                                                                                                                             |   |   |   |   |
| Common stock; authorized: 30,000,000 shares of $0.05 par value; 10,564,949 and 10,562,400 shares issued and outstanding for 2015 and 2014, respectively |   | 528 |  |   | 528 |  |
| Additional paid-in capital                                                                                                                              |   | 50,901 |  |   | 50,502 |  |
| Retained earnings                                                                                                                                       |   | 142,567 |  |   | 131,427 |  |
| Accumulated other comprehensive loss                                                                                                                    |   | (32 | ) |   | (44 | ) |
| Total shareholders’ equity                                                                                                                        |   | 193,964 |  |   | 182,413 |  |
| Total liabilities and shareholders’ equity                                                                                                        |   | $ | 248,462 |  |   | $ | 237,193 |  |

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|                                                       |
|-------------------------------------------------------|
|                                                       |  |  |  |  |  |  |  |  |  |  |  |  |
|                                             |   | Fiscal Year Ended |
|                                                  |   | March 29, 2015 |   | March 30, 2014 |   | March 31, 2013 |
| Sales                                                 |   | $ | 364,023 |  |   | $ | 348,263 |  |   | $ | 350,387 |  |
| Cost of sales                                         |   | (298,232 | ) |   | (286,663 | ) |   | (286,241 | ) |
| Pension withdrawal                                    |   | — |  |   | — |  |   | (7,210 | ) |
| Gross profit                                          |   | 65,791 |  |   | 61,600 |  |   | 56,936 |  |
| Selling, general and administrative expenses          |   | (35,375 | ) |   | (33,510 | ) |   | (31,606 | ) |
| Operating income                                      |   | 30,416 |  |   | 28,090 |  |   | 25,330 |  |
| Interest income (expense), net                        |   | 38 |  |   | (29 | ) |   | 84 |  |
| Income from continuing operations before income taxes |   | 30,454 |  |   | 28,061 |  |   | 25,414 |  |
| Income tax provision                                  |   | (11,240 | ) |   | (9,967 | ) |   | (8,306 | ) |
| Income from continuing operations                     |   | 19,214 |  |   | 18,094 |  |   | 17,108 |  |
| Income from discontinued operations, net of tax       |   | — |  |   | — |  |   | 18 |  |
| Net income                                            |   | $ | 19,214 |  |   | $ | 18,094 |  |   | $ | 17,126 |  |
| Weighted average number of shares outstanding-basic   |   | 10,568,582 |  |   | 10,544,467 |  |   | 10,464,820 |  |
| Weighted average number of shares outstanding-diluted |   | 10,633,554 |  |   | 10,599,755 |  |   | 10,541,142 |  |
| Basic earnings per share:                             |   |   |   |   |   |   |
| Earnings per share from continuing operations         |   | $ | 1.82 |  |   | $ | 1.72 |  |   | $ | 1.64 |  |
| Earnings per share from discontinued operations       |   | — |  |   | — |  |   | — |  |
| Basic earnings per share                              |   | $ | 1.82 |  |   | $ | 1.72 |  |   | $ | 1.64 |  |
| Diluted earnings per share:                           |   |   |   |   |   |   |
| Earnings per share from continuing operations         |   | $ | 1.81 |  |   | $ | 1.71 |  |   | $ | 1.62 |  |
| Earnings per share from discontinued operations       |   | — |  |   | — |  |   | — |  |
| Diluted earnings per share                            |   | $ | 1.81 |  |   | $ | 1.71 |  |   | $ | 1.62 |  |
| Cash dividends declared per common share              |   | $ | 0.76 |  |   | $ | 0.72 |  |   | $ | 0.68 |  |

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|                                                          |
|----------------------------------------------------------|
|                                                          |  |  |  |  |  |  |  |  |  |  |  |
| (In thousands)                                           |   |   |   |   |
|                                                     | March 29, 2015 |  |   | March 30, 2014 |  |   | March 31, 2013 |  |
|                                                     |   |   |   |   |   |
| Net income                                               | $ | 19,214 |  |   | $ | 18,094 |  |   | $ | 17,126 |  |
| Other comprehensive income (loss), net of tax:           |   |   |   |   |   |
| Unrealized gain (loss) on available-for-sale investments | 11 |  |   | (47 | ) |   | 12 |  |
| Unrealized gain on post-retirement liability             | 1 |  |   | 109 |  |   | 5 |  |
| Total other comprehensive income                         | 12 |  |   | 62 |  |   | 17 |  |
| Total comprehensive income                               | $ | 19,226 |  |   | $ | 18,156 |  |   | $ | 17,143 |  |

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|                                               |
|-----------------------------------------------|
|                                               |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|                                          |   | Common Stock |   | AdditionalPaid-inCapital |   | RetainedEarnings |   | Accumulated Other Comprehensive Income (Loss) |   | TotalShareholders’Equity |
| Shares                                        |   | Amount |   |
| BALANCE — April 1, 2012                 |   | 10,430,874 |  |   | $ | 522 |  |   | $ | 45,169 |  |   | $ | 111,039 |  |   | $ | (123 | ) |   | $ | 156,607 |  |
| Cash dividends                                |   |   |   |   |   |   |   | (7,191 | ) |   |   |   | (7,191 | ) |
| Stock compensation expense                    |   |   |   |   |   | 1,630 |  |   |   |   |   |   | 1,630 |  |
| Tax benefit on share-based compensation plans |   |   |   |   |   | 510 |  |   |   |   |   |   | 510 |  |
| Vesting of restricted stock                   |   | 6,120 |  |   |  |  |   | (1 | ) |   |   |   |   |   | (1 | ) |
| Shares surrendered for payroll taxes          |   |  |  |   |  |  |   |  |  |   |   |   |   |   | — |  |
| Stock options exercised                       |   | 27,999 |  |   | 1 |  |   | 514 |  |   |   |   |   |   | 515 |  |
| ESPP shares issued                            |   | 30,434 |  |   | 2 |  |   | 957 |  |   |   |   |   |   | 959 |  |
| Other comprehensive income, net of tax        |   |   |   |   |   |   |   |   |   | 17 |  |   | 17 |  |
| Net income                                    |   |   |   |   |   |   |   | 17,126 |  |   |   |   | 17,126 |  |
| BALANCE — March 31, 2013                |   | 10,495,427 |  |   | $ | 525 |  |   | $ | 48,779 |  |   | $ | 120,974 |  |   | $ | (106 | ) |   | $ | 170,172 |  |
| Cash dividends declared                       |   |   |   |   |   |   |   | (7,641 | ) |   |   |   | (7,641 | ) |
| Share-based compensation expense              |   |   |   |   |   | 1,322 |  |   |   |   |   |   | 1,322 |  |
| Tax benefit on share-based compensation plans |   |   |   |   |   | (214 | ) |   |   |   |   |   | (214 | ) |
| Vesting of restricted stock                   |   | 41,906 |  |   | 2 |  |   | (2 | ) |   |   |   |   |   | — |  |
| Shares surrendered for payroll taxes          |   | (12,480 | ) |   | (1 | ) |   | (484 | ) |   |   |   |   |   | (485 | ) |
| Stock options exercised                       |   | 9,333 |  |   | 1 |  |   | 185 |  |   |   |   |   |   | 186 |  |
| ESPP shares issued                            |   | 28,214 |  |   | 1 |  |   | 916 |  |   |   |   |   |   | 917 |  |
| Other comprehensive income, net of tax        |   |   |   |   |   |   |   |   |   | 62 |  |   | 62 |  |
| Net income                                    |   |   |   |   |   |   |   | 18,094 |  |   |   |   | 18,094 |  |
| BALANCE — March 30, 2014                |   | 10,562,400 |  |   | $ | 528 |  |   | $ | 50,502 |  |   | $ | 131,427 |  |   | $ | (44 | ) |   | $ | 182,413 |  |
|                                          |   |   |   |   |   |   |   |   |   |   |   |   |
| Cash dividends declared                       |   |   |   |   |   |   |   | (8,074 | ) |   |   |   | (8,074 | ) |
| Share-based compensation expense              |   |   |   |   |   | 1,631 |  |   |   |   |   |   | 1,631 |  |
| Tax benefit on share-based compensation plans |   |   |   |   |   | 92 |  |   |   |   |   |   | 92 |  |
| Vesting of restricted stock                   |   | 29,355 |  |   | 1 |  |   | (1 | ) |   |   |   |   |   | — |  |
| Shares surrendered for payroll taxes          |   | (7,920 | ) |   |  |  |   | (295 | ) |   |   |   |   |   | (295 | ) |
| Stock options exercised                       |   | 9,333 |  |   |  |  |   | 186 |  |   |   |   |   |   | 186 |  |
| ESPP shares Issued                            |   | 31,383 |  |   | 2 |  |   | 986 |  |   |   |   |   |   | 988 |  |
| Shares repurchased                            |   | (59,602 | ) |   | (3 | ) |   | (2,200 | ) |   |   |   |   |   | (2,203 | ) |
| Other comprehensive income, net of tax        |   |   |   |   |   |   |   |   |   | 12 |  |   | 12 |  |
| Net income                                    |   |   |   |   |   |   |   | 19,214 |  |   |   |   | 19,214 |  |
| BALANCE — March 29, 2015                |   | 10,564,949 |  |   | $ | 528 |  |   | $ | 50,901 |  |   | $ | 142,567 |  |   | $ | (32 | ) |   | $ | 193,964 |  |

----

|                                                                                      |
|--------------------------------------------------------------------------------------|
|                                                                                      |  |  |  |  |  |  |  |  |  |  |  |  |
|                                                                            |   | Fiscal Year Ended |
|                                                                                 |   | March 29, 2015 |   | March 30, 2014 |   | March 31, 2013 |
| CASH FLOWS FROM OPERATING ACTIVITIES:                                                |   |   |   |   |   |   |
| Net income                                                                           |   | $ | 19,214 |  |   | $ | 18,094 |  |   | $ | 17,126 |  |
| Reconciliation to cash flows:                                                        |   |   |   |   |   |   |
| Depreciation and amortization                                                        |   | 13,015 |  |   | 12,605 |  |   | 10,248 |  |
| Deferred income taxes                                                                |   | (418 | ) |   | 2,150 |  |   | (2,985 | ) |
| Pension withdrawal                                                                   |   | — |  |   | — |  |   | 7,210 |  |
| Share-based compensation expense                                                     |   | 1,631 |  |   | 1,322 |  |   | 1,621 |  |
| Loss from property disposals                                                         |   | 45 |  |   | 111 |  |   | 153 |  |
| Changes in operating accounts (using) providing cash, net of effects of acquisition: |   |   |   |   |   |   |
| Trade receivables                                                                    |   | (1,051 | ) |   | (1,698 | ) |   | 2,149 |  |
| Inventories                                                                          |   | (9,977 | ) |   | 2,122 |  |   | (573 | ) |
| Accounts payable                                                                     |   | 563 |  |   | 335 |  |   | (1,185 | ) |
| Accrued liabilities                                                                  |   | (506 | ) |   | 141 |  |   | (1,319 | ) |
| Income taxes                                                                         |   | (2,177 | ) |   | (2 | ) |   | 3,893 |  |
| Other                                                                                |   | 325 |  |   | (568 | ) |   | (864 | ) |
| Net cash provided by operating activities                                            |   | 20,664 |  |   | 34,612 |  |   | 35,474 |  |
| CASH FLOWS FROM INVESTING ACTIVITIES:                                                |   |   |   |   |   |   |
| Additions to property, plant, and equipment                                          |   | (14,552 | ) |   | (12,261 | ) |   | (26,660 | ) |
| Purchases of investments                                                             |   | (15,303 | ) |   | (25,161 | ) |   | (18,755 | ) |
| Sale and maturities of investments                                                   |   | 13,280 |  |   | 16,612 |  |   | 14,900 |  |
| Proceeds from property disposals                                                     |   | 223 |  |   | 115 |  |   | 233 |  |
| Acquisitions                                                                         |   | (10,068 | ) |   | (2,416 | ) |   | (100 | ) |
| Net cash used in investing activities                                                |   | (26,420 | ) |   | (23,111 | ) |   | (30,382 | ) |
| CASH FLOWS FROM FINANCING ACTIVITIES:                                                |   |   |   |   |   |   |
| Cash dividends paid                                                                  |   | (7,859 | ) |   | (7,410 | ) |   | (6,936 | ) |
| New shares issued                                                                    |   | 988 |  |   | 917 |  |   | 968 |  |
| Stock options exercised                                                              |   | 186 |  |   | 186 |  |   | 515 |  |
| Excess tax benefit from share-based compensation                                     |   | 92 |  |   | 62 |  |   | 510 |  |
| Shares surrendered for payroll taxes                                                 |   | (295 | ) |   | (485 | ) |   | — |  |
| Shares repurchased                                                                   |   | (2,203 | ) |   | — |  |   | — |  |
| Net cash used in financing activities                                                |   | (9,091 | ) |   | (6,730 | ) |   | (4,943 | ) |
| NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS                                 |   | (14,847 | ) |   | 4,771 |  |   | 149 |  |
| CASH AND CASH EQUIVALENTS-                                                           |   |   |   |   |   |   |
| Beginning of year                                                                    |   | 33,486 |  |   | 28,715 |  |   | 28,566 |  |
| CASH AND CASH EQUIVALENTS-                                                           |   |   |   |   |   |   |
| End of year                                                                          |   | $ | 18,639 |  |   | $ | 33,486 |  |   | $ | 28,715 |  |
| SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION-                                   |   |   |   |   |   |   |
| Cash paid during the year for income taxes                                           |   | $ | 13,801 |  |   | $ | 7,757 |  |   | $ | 6,900 |  |
| Noncash investing activities-                                                        |   |   |   |   |   |   |
| Capital expenditures in accounts payable                                             |   | $ | 1,126 |  |   | $ | 699 |  |   | $ | 1,401 |  |

----

----

----

|                                                                                 |
|---------------------------------------------------------------------------------|
|                                                                                 |  |  |  |  |  |  |  |  |  |
|                                                                            |   | March 29, 2015 |   | March 30, 2014 |   | March 31, 2013 |
| Weighted average common shares outstanding — basic                        |   | 10,568,582 |  |   | 10,544,467 |  |   | 10,464,820 |  |
| Dilutive impact of stock performance units, restricted stock, and stock options |   | 64,972 |  |   | 55,288 |  |   | 76,322 |  |
| Weighted average common shares outstanding — diluted                      |   | 10,633,554 |  |   | 10,599,755 |  |   | 10,541,142 |  |

----

|                                             |
|---------------------------------------------|
|                                             |  |  |  |
| (In thousands)                              | Amount |
| Accounts receivable                         | $ | 1,358 |  |
| Inventory                                   | 859 |  |
| Other assets                                | 159 |  |
| Property, plant, and equipment              | 702 |  |
| Intangible assets                           | 3,509 |  |
| Current liabilities                         | (877 | ) |
|     Net assets acquired | 5,710 |  |
| Goodwill                                    | 4,358 |  |
| Total purchase price                        | $ | 10,068 |  |

|                        |
|------------------------|
|                        |  |  |  |  |
| (In thousands)         | Amount | Life (in years) |
| Customer relationships | $ | 2,810 |  | 20 |
| Trade name             | 699 |  | 4 |
|                   | $ | 3,509 |  |   |

----

|                           |
|---------------------------|
|                           |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Description               |   | March 29, 2015 |   | Level 1 |   | Level 2 |   | Level 3 |
| (In thousands)            |   |
| Assets:                   |   |   |   |   |   |   |   |   |
| Cash and cash equivalents |   | $ | 18,639 |  |   | $ | 18,639 |  |   | $ | — |  |   | $ | — |  |
| Certificates of deposit   |   | 29,136 |  |   | — |  |   | 29,136 |  |   | — |  |
| Municipal Bonds           |   | 2,598 |  |   | — |  |   | 2,598 |  |   | — |  |
|                      |   |   |   |   |   |   |   |   |
| Description               |   | March 30, 2014 |   | Level 1 |   | Level 2 |   | Level 3 |
| (In thousands)            |   |
| Assets:                   |   |   |   |   |   |   |   |   |
| Cash and cash equivalents |   | $ | 33,486 |  |   | $ | 33,486 |  |   | $ | — |  |   | $ | — |  |
| Certificates of deposit   |   | 24,437 |  |   | — |  |   | 24,437 |  |   | — |  |
| Municipal Bonds           |   | 5,258 |  |   | — |  |   | 5,258 |  |   | — |  |

|                                     |
|-------------------------------------|
|                                     |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|                                | March 29, 2015 |   | March 30, 2014 |
| (In thousands)                      |   | AmortizedCost |   | Fair Value |   | UnrealizedGain/(loss) |   | AmortizedCost |   | Fair Value |   | UnrealizedGain/(loss) |
| Within one year                     |   | $ | 14,491 |  |   | $ | 14,485 |  |   | $ | (6 | ) |   | $ | 13,864 |  |   | $ | 13,843 |  |   | $ | (21 | ) |
| Between one and three years         |   | 17,285 |  |   | 17,249 |  |   | (36 | ) |   | 15,890 |  |   | 15,852 |  |   | (38 | ) |
| Total available-for-sale securities |   | $ | 31,776 |  |   | $ | 31,734 |  |   | $ | (42 | ) |   | $ | 29,754 |  |   | $ | 29,695 |  |   | $ | (59 | ) |

|                        |
|------------------------|
|                        |  |  |  |  |  |  |  |  |
|                   |   | 2015 |   | 2014 |
| (In thousands)         |   |   |   |   |
| Inventory (FIFO basis) |   | $ | 42,567 |  |   | $ | 31,344 |  |
| LIFO reserve           |   | (5,539 | ) |   | (5,152 | ) |
| Net inventory          |   | $ | 37,028 |  |   | $ | 26,192 |  |

----

|                              |
|------------------------------|
|                              |  |  |  |
| (In thousands)               | Amount |
| Balance as of March 31, 2013 | $ | 6,495 |  |
| ACS Acquisition              | 897 |  |
| Balance as of March 30, 2014 | 7,392 |  |
| Dumont Acquisition           | 4,358 |  |
| Balance as of March 29, 2015 | $ | 11,750 |  |
|                         |   |

|                                     |
|-------------------------------------|
|                                     |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|                                |   | 2015 |   | 2014 |
|                                |   | Gross Amount |   | AccumulatedAmortization |   | Net |   | Gross Amount |   | AccumulatedAmortization |   | Net |
| (In thousands)                      |   |   |   |   |   |   |   |   |   |   |   |   |
| Finite-life intangible assets:      |   |   |   |   |   |   |   |   |   |   |   |   |
| Customer relationships              |   | $ | 9,723 |  |   | $ | (1,697 | ) |   | $ | 8,026 |  |   | $ | 6,913 |  |   | $ | (1,292 | ) |   | $ | 5,621 |  |
| Trademarks and trade names          |   | 2,034 |  |   | (667 | ) |   | 1,367 |  |   | 1,335 |  |   | (421 | ) |   | 914 |  |
| Trade secrets                       |   | 962 |  |   | (896 | ) |   | 66 |  |   | 962 |  |   | (768 | ) |   | 194 |  |
| Carrier relationships               |   | 800 |  |   | (337 | ) |   | 463 |  |   | 800 |  |   | (257 | ) |   | 543 |  |
| Other finite-life intangible assets |   | 341 |  |   | (336 | ) |   | 5 |  |   | 341 |  |   | (331 | ) |   | 10 |  |
| Total finite-life intangible assets |   | 13,860 |  |   | (3,933 | ) |   | 9,927 |  |   | 10,351 |  |   | (3,069 | ) |   | 7,282 |  |
| Indefinite-life intangible assets   |   | 1,227 |  |   | — |  |   | 1,227 |  |   | 1,227 |  |   | — |  |   | 1,227 |  |
| Total intangible assets, net        |   | $ | 15,087 |  |   | $ | (3,933 | ) |   | $ | 11,154 |  |   | $ | 11,578 |  |   | $ | (3,069 | ) |   | $ | 8,509 |  |

|                                |
|--------------------------------|
|                                |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| (In thousands)                 |   | 2016 |   | 2017 |   | 2018 |   | 2019 |   | 2020 |
| Estimated amortization expense |   | $ | 932 |  |   | $ | 885 |  |   | $ | 873 |  |   | $ | 791 |  |   | $ | 690 |  |

|                                            |
|--------------------------------------------|
|                                            |  |  |  |  |  |  |  |  |
| (In thousands)                             |   | 2015 |   | 2014 |
| Unrealized gain (loss) on:                 |   |   |   |   |
| Available-for-sale investments             |   | $ | (25 | ) |   | $ | (36 | ) |
| Post-retirement plan liability adjustments |   | (7 | ) |   | (8 | ) |
| Accumulated other comprehensive loss       |   | $ | (32 | ) |   | $ | (44 | ) |

----

|                                  |
|----------------------------------|
|                                  |  |  |  |  |  |  |  |
|                             |   | Shares |   | Weighted-Average GrantDate Fair Value |
| Outstanding at beginning of year |   | 52,104 |  |   | $ | 36.99 |  |
| Granted                          |   | 24,932 |  |   | 34.45 |  |
| Vested                           |   | (23,300 | ) |   | 33.01 |  |
| Forfeited or expired             |   | (156 | ) |   | 33.01 |  |
| Outstanding at end of year       |   | 53,580 |  |   | $ | 37.55 |  |

|                                    |
|------------------------------------|
|                                    |  |  |  |  |  |  |  |
|                               |   | Shares |   | Weighted-Average GrantDate Fair Value |
| Outstanding at beginning of period |   | 6,055 |  |   | $ | 40.42 |  |
| Granted                            |   | 7,077 |  |   | 34.61 |  |
| Vested                             |   | (6,055 | ) |   | 40.42 |  |
| Forfeited or expired               |   | — |  |   | — |  |
| Outstanding at end of period       |   | 7,077 |  |   | $ | 34.61 |  |

----

|                                                 |
|-------------------------------------------------|
|                                                 |  |  |  |  |  |  |  |  |  |  |  |  |
| Benefit Plan                                    |   | 2015 |   | 2014 |   | 2013 |
| (In thousands)                                  |   |   |   |   |   |   |
| Non-bargaining unit employee plans:             |   |   |   |   |   |   |
|    Profit sharing                |   | $ | 1,266 |  |   | $ | 1,231 |  |   | $ | 1,204 |  |
|    401(K) matching contributions |   | 1,216 |  |   | 980 |  |   | 1,206 |  |
|    ESOP                          |   | 1,266 |  |   | 1,231 |  |   | 1,203 |  |
| Bargaining unit employee plans                  |   | 450 |  |   | 500 |  |   | — |  |
| ESPP - all employees                            |   | 253 |  |   | 257 |  |   | 289 |  |
| Total contribution expense                      |   | $ | 4,451 |  |   | $ | 4,199 |  |   | $ | 3,902 |  |

----

|                       |
|-----------------------|
|                       |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| (In thousands)        |   | 2016 |   | 2017 |   | 2018 |   | 2019 |   | 2020 |   | Thereafter |
| Minimum lease payment |   | $ | 2,139 |  |   | $ | 1,916 |  |   | $ | 1,740 |  |   | $ | 1,555 |  |   | $ | 1,388 |  |   | $ | 4,198 |  |

|                      |
|----------------------|
|                      |  |  |  |  |  |  |  |  |  |  |  |  |
|                 |   | 2015 |   | 2014 |   | 2013 |
| (In thousands)       |   |   |   |   |   |   |
| Minimum rentals      |   | $ | 1,665 |  |   | $ | 1,223 |  |   | $ | 818 |  |
| Contingent rentals   |   | 103 |  |   | 110 |  |   | 110 |  |
| Total rental expense |   | $ | 1,768 |  |   | $ | 1,333 |  |   | $ | 928 |  |

----

|                          |
|--------------------------|
|                          |  |  |  |  |  |  |  |  |  |  |  |  |
|                     |   | 2015 |   | 2014 |   | 2013 |
| (In thousands)           |   |   |   |   |   |   |
| Federal — current  |   | $ | 9,574 |  |   | $ | 7,612 |  |   | $ | 8,967 |  |
| State — current    |   | 2,133 |  |   | 1,255 |  |   | 2,417 |  |
| Total current            |   | 11,707 |  |   | 8,867 |  |   | 11,384 |  |
|                     |   |   |   |   |   |   |
| Federal — deferred |   | (517 | ) |   | 676 |  |   | (2,466 | ) |
| State — deferred   |   | 50 |  |   | 424 |  |   | (600 | ) |
| Total deferred           |   | (467 | ) |   | 1,100 |  |   | (3,066 | ) |
| Total provision          |   | $ | 11,240 |  |   | $ | 9,967 |  |   | $ | 8,318 |  |

|                                              |
|----------------------------------------------|
|                                              |  |  |  |  |  |  |  |  |  |
|                                         |   | 2015 |   | 2014 |   | 2013 |
| Statutory federal income tax                 |   | 35.0 |  % |   | 35.0 |  % |   | 35.0 |  % |
| State income taxes, net of federal deduction |   | 4.7 |  % |   | 3.2 |  % |   | 4.9 |  % |
| ESOP dividend deduction on allocated shares  |   | (0.7 | )% |   | (0.8 | )% |   | (1.0 | )% |
| Domestic production deduction                |   | (2.4 | )% |   | (2.1 | )% |   | (2.7 | )% |
| Impact of amended tax returns                |   | — |  % |   | — |  % |   | (3.3 | )% |
| Other — net                            |   | 0.3 |  % |   | 0.2 |  % |   | (0.2 | )% |
| Total                                        |   | 36.9 |  % |   | 35.5 |  % |   | 32.7 |  % |

|                                      |
|--------------------------------------|
|                                      |  |  |  |  |  |  |  |  |
| (In thousands)                       |   | 2015 |   | 2014 |
| Deferred tax assets:                 |   |   |   |   |
| Trade receivables                    |   | $ | 178 |  |   | $ | 191 |  |
| Stock compensation accruals          |   | 949 |  |   | 1,031 |  |
| Pension withdrawal liability         |   | 2,755 |  |   | 2,872 |  |
| Other                                |   | 811 |  |   | 842 |  |
| Total deferred tax assets            |   | $ | 4,693 |  |   | $ | 4,936 |  |
| Deferred tax liabilities:            |   |   |   |   |
| Inventories                          |   | $ | (3,307 | ) |   | $ | (3,618 | ) |
| Prepaid                              |   | (689 | ) |   | (727 | ) |
| Excess of tax over book depreciation |   | (12,699 | ) |   | (13,221 | ) |
| Amortization of intangibles          |   | (674 | ) |   | (456 | ) |
| Total deferred tax liabilities       |   | $ | (17,369 | ) |   | $ | (18,022 | ) |
| Net deferred tax liabilities         |   | $ | (12,676 | ) |   | $ | (13,086 | ) |

----

|                                               |
|-----------------------------------------------|
|                                               |  |  |  |  |  |  |  |  |  |  |  |  |
| Reportable Segments                           |   | Industrial |   | WaterTreatment |   | Total |
| (In thousands)                                |   |   |   |   |   |   |
| Fiscal Year Ended March 29, 2015:             |   |   |   |   |   |   |
| Sales                                         |   | $ | 249,066 |  |   | $ | 114,957 |  |   | $ | 364,023 |  |
| Gross profit                                  |   | 33,619 |  |   | 32,172 |  |   | 65,791 |  |
| Selling, general, and administrative expenses |   | 19,793 |  |   | 15,582 |  |   | 35,375 |  |
| Operating income                              |   | 13,826 |  |   | 16,590 |  |   | 30,416 |  |
| Identifiable assets*                          |   | $ | 151,157 |  |   | $ | 42,860 |  |   | $ | 194,017 |  |
| Fiscal Year Ended March 30, 2014:             |   |   |   |   |   |   |
| Sales                                         |   | $ | 244,888 |  |   | $ | 103,375 |  |   | $ | 348,263 |  |
| Gross profit                                  |   | 32,041 |  |   | 29,559 |  |   | 61,600 |  |
| Selling, general, and administrative expenses |   | 19,781 |  |   | 13,729 |  |   | 33,510 |  |
| Operating income                              |   | 12,260 |  |   | 15,830 |  |   | 28,090 |  |
| Identifiable assets*                          |   | $ | 141,506 |  |   | $ | 29,001 |  |   | $ | 170,507 |  |
| Fiscal Year Ended March 31, 2013:             |   |   |   |   |   |   |
| Sales                                         |   | $ | 248,556 |  |   | $ | 101,831 |  |   | $ | 350,387 |  |
| Gross profit                                  |   | 28,878 |  |   | 28,058 |  |   | 56,936 |  |
| Selling, general, and administrative expenses |   | 19,923 |  |   | 11,683 |  |   | 31,606 |  |
| Operating income                              |   | 8,955 |  |   | 16,375 |  |   | 25,330 |  |
| Identifiable assets*                          |   | $ | 143,827 |  |   | $ | 25,448 |  |   | $ | 169,275 |  |

----

|                                               |
|-----------------------------------------------|
|                                               |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| (In thousands, except per share data)         |   | Fiscal 2015 |
|                                          |   | First |   | Second |   | Third |   | Fourth |
| Sales                                         |   | $ | 98,036 |  |   | $ | 88,881 |  |   | $ | 83,825 |  |   | $ | 93,281 |  |
| Gross profit                                  |   | 18,496 |  |   | 18,122 |  |   | 13,642 |  |   | 15,531 |  |
| Selling, general, and administrative expenses |   | 8,875 |  |   | 8,271 |  |   | 8,697 |  |   | 9,532 |  |
| Operating income                              |   | 9,621 |  |   | 9,851 |  |   | 4,945 |  |   | 5,999 |  |
| Net income                                    |   | $ | 6,021 |  |   | $ | 6,147 |  |   | $ | 3,146 |  |   | $ | 3,900 |  |
| Basic net income per share                    |   | $ | 0.57 |  |   | $ | 0.58 |  |   | $ | 0.30 |  |   | $ | 0.37 |  |
| Diluted net income per share                  |   | $ | 0.57 |  |   | $ | 0.58 |  |   | $ | 0.30 |  |   | $ | 0.37 |  |
|                                          |   |   |   |   |   |   |   |   |
|                                          |   | Fiscal 2014 |
|                                          |   | First |   | Second |   | Third |   | Fourth |
| Sales                                         |   | $ | 94,744 |  |   | $ | 86,599 |  |   | $ | 81,697 |  |   | $ | 85,223 |  |
| Gross profit                                  |   | 17,231 |  |   | 16,570 |  |   | 13,550 |  |   | 14,249 |  |
| Selling, general, and administrative expenses |   | 8,970 |  |   | 8,293 |  |   | 8,167 |  |   | 8,080 |  |
| Operating income                              |   | 8,261 |  |   | 8,277 |  |   | 5,383 |  |   | 6,169 |  |
| Net income                                    |   | $ | 5,112 |  |   | $ | 5,207 |  |   | $ | 3,480 |  |   | $ | 4,295 |  |
| Basic net income per share                    |   | $ | 0.49 |  |   | $ | 0.49 |  |   | $ | 0.33 |  |   | $ | 0.41 |  |
| Diluted net income per share                  |   | $ | 0.48 |  |   | $ | 0.49 |  |   | $ | 0.33 |  |   | $ | 0.40 |  |

----

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|                                       |
|---------------------------------------|
|                                       |  |  |  |  |
|                                  |   |   |
| /s/  Patrick H. Hawkins     |   |   |   | /s/  Kathleen P. Pepski |
| Patrick H. Hawkins                    |   |   |   | Kathleen P. Pepski |
| Chief Executive Officer and President |   |   |   | Vice President, Chief Financial Officer,and Treasurer |
| May 28, 2015                     |   |   |   | May 28, 2015 |

----

|                       |
|-----------------------|
|                       |  |  |  |  |
| Name                  |   | Age |   | Office |
| Patrick H. Hawkins    |   | 44 |   | Chief Executive Officer and President |
| Kathleen P. Pepski    |   | 60 |   | Vice President, Chief Financial Officer, and Treasurer |
| Richard G. Erstad     |   | 51 |   | Vice President, General Counsel and Secretary |
| Thomas J. Keller      |   | 55 |   | Vice President — Water Treatment Group |
| Steven D. Matthews II |   | 44 |   | Vice President — Operations |
| Theresa R. Moran      |   | 52 |   | Vice President — Quality and Support |
| John R. Sevenich      |   | 57 |   | Vice President — Industrial Group |

----

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|        |
|--------|
|        |  |  |
| (a)(1) |    | FINANCIAL STATEMENTS OF THE COMPANY |
|   |   |
|   |    | The following financial statements of Hawkins, Inc. are filed as part of this Annual Report on Form 10-K: |
|   |   |
|   |    | Report of Independent Registered Public Accounting Firm. |
|   |   |
|   |    | Consolidated Balance Sheets at March 29, 2015 and March 30, 2014. |
|   |   |
|   |    | Consolidated Statements of Income for the fiscal years ended March 29, 2015, March 30, 2014 and March 31, 2013. |
|   |   |
|   |    | Consolidated Statements of Comprehensive Income for the fiscal years ended March 29, 2015, March 30, 2014 and March 31, 2013. |
|   |   |
|   |    | Consolidated Statements of Shareholders’ Equity for the fiscal years ended March 29, 2015, March 30, 2014  and March 31, 2013. |
|   |   |
|   |    | Consolidated Statements of Cash Flows for the fiscal years ended March 29, 2015, March 30, 2014 and March 31, 2013. |
|   |   |   |
|   |    | Notes to Consolidated Financial Statements. |
|   |   |
| (a)(2) |    | FINANCIAL STATEMENT SCHEDULES OF THE COMPANY |
|   |   |
|   |    | The additional financial data listed below is included as a schedule to this Annual Report on Form 10-K and should be read in conjunction with the financial statements presented in Part II, Item 8. Schedules not included with this additional financial data have been omitted because they are not required or the required information is included in the financial statements or the notes. |
|   |   |
|   |    | The following financial statement schedule for the fiscal years 2015, 2014 and 2013. |
|   |   |
|   |    | Schedule II — Valuation and Qualifying Accounts. |
|   |   |
| (a)(3) |    | EXHIBITS |
|   |   |
|   |    | The exhibits of this Annual Report on Form 10-K included herein are set forth on the attached Exhibit Index. |

----

|        |
|--------|
|        |  |  |  |  |  |
|   |   |   | HAWKINS, INC. |
|   |   |   |   |
| Date:  | June 19, 2015 |   | By |   | /s/  Patrick H. Hawkins |
|   |   |   |   |   | Patrick H. Hawkins,Chief Executive Officer and President |

----

|                                                  |
|--------------------------------------------------|
|                                                  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|                                             |   |   |   | Additions |   |   |   |   |
| Description                                      |   | Balance atBeginningof Year |   | Charged toCosts andExpenses |   | Charged toOtherAccounts |   | DeductionsWrite-Offs |   | Balance atEnd of  Year |
|                                             |   | (In thousands) |
| Reserve deducted from asset to which it applies: |   |   |   |   |   |   |   |   |   |   |
| Year Ended March 29, 2015:                       |   |   |   |   |   |   |   |   |   |   |
| Allowance for doubtful accounts                  |   | $ | 477 |  |   | $ | (32 | ) |   | $ | — |  |   | $ | — |  |   | $ | 445 |  |
| Year Ended March 30, 2014:                       |   |   |   |   |   |   |   |   |   |   |
| Allowance for doubtful accounts                  |   | $ | 469 |  |   | $ | 44 |  |   | $ | — |  |   | $ | 36 |  |   | $ | 477 |  |
| Year Ended March 31, 2013:                       |   |   |   |   |   |   |   |   |   |   |
| Allowance for doubtful accounts                  |   | $ | 460 |  |   | $ | 201 |  |   | $ | — |  |   | $ | 192 |  |   | $ | 469 |  |

----

|         |
|---------|
|         |  |  |  |  |  |
| Exhibit |  |    | Description |    | Method of Filing |
|    |   |   |
| 3.1     |  |    | Amended and Second Restated Articles of Incorporation.(1) |    | Incorporated by Reference |
|    |   |   |
| 3.2     |  |    | Amended and Restated By-Laws.(2) |    | Incorporated by Reference |
|    |   |   |
| 10.1*   |  |    | Hawkins, Inc. 2004 Omnibus Stock Plan.(3) |    | Incorporated by Reference |
|    |   |   |
| 10.2*   |  |    | Form of Non-Statutory Stock Option Agreement under the Company’s 2004 Omnibus Stock Plan.(4) |    | Incorporated by Reference |
|    |   |   |
| 10.3*   |  |    | Hawkins, Inc. 2010 Omnibus Incentive Plan.(5) |    | Incorporated by Reference |
|    |   |   |
| 10.4*   |  |    | Form of Performance-Based Unit Award Notice and Restricted Stock Agreement under the Company’s 2010 Omnibus Incentive Plan.(6) |    | Incorporated by Reference |
|    |   |   |
| 10.5*   |  |    | Form of Restricted Stock Agreement under the Company’s 2010 Omnibus Incentive Plan.(7) |    | Incorporated by Reference |
|    |   |   |
| 10.6*   |  |    | Hawkins, Inc. Executive Severance Plan.(8) |    | Incorporated by Reference |
|    |   |   |
| 21      |  |   | Subsidiaries of the registrant (9) |   | Incorporated by Reference |
|    |   |   |   |   |
| 23.1    |  |    | Consent of Independent Registered Public Accounting Firm. |    | Filed Electronically |
|    |   |   |
| 31.1    |  |    | Certification by Chief Executive Officer pursuant to Rule 13a-14(a) of the Exchange Act. |    | Filed Electronically |
|    |   |   |
| 31.2    |  |    | Certification by Chief Financial Officer pursuant to Rule 13a-14(a) of the Exchange Act. |    | Filed Electronically |
|    |   |   |
| 32.1    |  |    | Section 1350 Certification by Chief Executive Officer. |    | Filed Electronically |
|    |   |   |
| 32.2    |  |    | Section 1350 Certification by Chief Financial Officer. |    | Filed Electronically |
|    |   |   |
| 101     |  |    | Financial statements from the Annual Report on Form 10-K of Hawkins, Inc. for the period ended March 29, 2015, filed with the SEC on May 29, 2014, formatted in Extensible Business Reporting Language (XBRL); (i) the Consolidated Balance Sheets at March 29, 2015 and March 30, 2014, (ii) the Consolidated Statements of Income for the fiscal years ended March 29, 2015, March 30, 2014 and March 31, 2013 (iii) the  Consolidated Statements of Comprehensive Income (Loss) for the fiscal years ended  March 29, 2015, March 30, 2014 and  March 31, 2013 (iv) the Consolidated Statements of Shareholders’ Equity for the  fiscal years ended March 29, 2015, March 30, 2014 and March 31, 2013 (v) Consolidated Statements of Cash Flows for the fiscal years ended  March 29, 2015, March 30, 2014 and March 31, 2013 and (iv) Notes to Condensed Consolidated Financial Statements. (10) |    | Previously Filed Electronically |

|   |
|---|
|   |  |
| * | Management contract or compensation plan or arrangement required to be filed as an exhibit to this Annual Report on Form 10-K. |

----

|     |                                                                                                                                                       |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| (1) | Incorporated by reference to Exhibit 3.1 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2010. |

|     |                                                                                                                                                                   |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (2) | Incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K dated October 28, 2009 and filed November 3, 2009. |

|     |                                                                                                                                                           |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------|
| (3) | Incorporated by reference to Appendix B to the Company’s Proxy Statement for the 2004 Annual Meeting of Shareholders filed July 23, 2004. |

|     |                                                                                                                                                             |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (4) | Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2008. |

|     |                                                                                                                                                              |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (5) | Incorporated by reference to Exhibit 10.1 to the Company’s Registration Statement on Form S-8 filed June 6, 2011 (file no. 333-174735). |

|     |                                                                                                                                                             |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (6) | Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2010. |

|     |                                                                                                                                                        |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------|
| (7) | Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2010. |

|     |                                                                                                                                             |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------|
| (8) | Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended July 3, 2011. |

|     |                                                                                                                                       |
|-----|---------------------------------------------------------------------------------------------------------------------------------------|
| (9) | Incorporated by reference to Exhibit 21 to the Company’s Annual Report on Form 10-K for the annual period ended March 30, 2014. |

|      |                                                                                                      |
|------|------------------------------------------------------------------------------------------------------|
| (10) |  Previously filed with our Annual Report on Form 10-K filed with the Commission on May 28, 2015. |