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CONSOLIDATED AND CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenues: |  |  |  |  |
Revenues |  | $ 168,717 | $ 170,934 | $ 541,936 | $ 536,295
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold |  | 75,743 | 70,977 | 243,823 | 225,435
Expenses: |  |  |  |  |
Operating expenses | [1] | 64,882 | 62,363 | 193,718 | 191,655
Selling, general and administrative | [1] | 9,257 | 12,494 | 31,913 | 32,108
Depreciation and amortization |  | 12,336 | 12,608 | 37,790 | 37,944
Total costs and expenses |  | 162,218 | 158,442 | 507,244 | 487,142
Gain on disposition or sale of property, plant and equipment |  | 395 | 159 | 1,487 | 1,320
Operating income |  | 6,894 | 12,651 | 36,179 | 50,473
Other income (expense): |  |  |  |  |
Interest expense, net |  | (14,614) | (14,592) | (43,329) | (42,811)
Equity in earnings (loss) of DSM Semichem LLC |  | 20 | (314) | (805) | (314)
Other, net |  | 3 | 2 | 19 | 20
Total other expense |  | (14,591) | (14,904) | (44,115) | (43,105)
Net income before taxes |  | (7,697) | (2,253) | (7,936) | 7,368
Income tax expense |  | (715) | (1,066) | (3,916) | (3,634)
Net income (loss) |  | (8,412) | (3,319) | (11,852) | 3,734
Less general partner's interest in net income (loss) |  | (168) | (66) | (237) | 75
Less income (loss) allocable to unvested restricted units |  | (35) | (14) | (49) | 14
Limited partners' interest in net income (loss) |  | $ (8,209) | $ (3,239) | $ (11,566) | $ 3,645
Net income (loss) per unit attributable to limited partners - basic (in dollars per share) |  | $ (0.21) | $ (0.08) | $ (0.30) | $ 0.09
Net income (loss) per unit attributable to limited partners - diluted (in dollars per share) |  | $ (0.21) | $ (0.08) | $ (0.30) | $ 0.09
Weighted average limited partner units - basic (in shares) |  | 38,892,348 | 38,832,222 | 38,889,260 | 38,831,064
Weighted average limited partner units - diluted (in shares) |  | 38,892,348 | 38,832,222 | 38,889,260 | 38,909,976
Transportation |  |  |  |  |
Revenues: |  |  |  |  |
Revenues | [1] | $ 49,709 | $ 56,506 | $ 156,520 | $ 172,489
Sulfur services |  |  |  |  |
Revenues: |  |  |  |  |
Revenues |  | 4,073 | 3,477 | 12,369 | 10,431
Product sales |  |  |  |  |
Revenues: |  |  |  |  |
Revenues | [1] | 91,005 | 88,389 | 305,164 | 285,921
Specialty products |  |  |  |  |
Revenues: |  |  |  |  |
Revenues | [1] | 62,443 | 67,206 | 192,066 | 200,819
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold | [1] | 54,844 | 58,409 | 167,608 | 173,192
Sulfur services |  |  |  |  |
Revenues: |  |  |  |  |
Revenues | [1] | 28,562 | 21,183 | 113,098 | 85,102
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold | [1] | 20,899 | 12,545 | 76,215 | 52,178
Terminalling and storage |  |  |  |  |
Revenues: |  |  |  |  |
Revenues | [1] | 23,930 | 22,562 | 67,883 | 67,454
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |
Cost of products sold | [1] | $ 0 | $ 23 | $ 0 | $ 65
[1] | Related Party Transactions Included Above
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Revenues:* |  |  |  |  |  |  |
Terminalling and storage | $ | 18,622 |  |  | $ | 17,785 |  |  | $ | 54,105 |  |  | $ | 54,412 |
Transportation | 6,521 |  |  | 7,975 |  |  | 21,811 |  |  | 24,894 |
Product Sales | 947 |  |  | 91 |  |  | 3,287 |  |  | 343 |
Costs and expenses:* |  |  |  |  |  |  |
Cost of products sold: (excluding depreciation and amortization) |  |  |  |  |  |  |
Specialty products | 7,973 |  |  | 8,401 |  |  | 21,260 |  |  | 23,342 |
Sulfur services | 3,303 |  |  | 3,014 |  |  | 9,611 |  |  | 8,926 |
Terminalling and storage | — |  |  | 23 |  |  | — |  |  | 65 |
Expenses: |  |  |  |  |  |  |
Operating expenses | 27,857 |  |  | 26,153 |  |  | 83,245 |  |  | 79,077 |
Selling, general and administrative | 7,133 |  |  | 12,215 |  |  | 23,160 |  |  | 27,716 |

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