UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2023 or ☐ Transition Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 for the Transition Period From ________To _______ Commission file number 0-31164 Preformed Line Products Company (Exact name of registrant as specified in its charter) | Ohio | 34-0676895 | | -- ...

Exhibit 99.1 PREFORMED LINE PRODUCTS ANNOUNCES FOURTH QUARTER AND FULL YEAR 2023 FINANCIAL RESULTS CLEVELAND, OHIO – MARCH 7, 2024 - Preformed Line Products Company (NASDAQ: PLPC) today reported financial results for its fourth quarter and full year ended December 31, 2023. Full Year 2023 Highlights: Net sales in the fourth quarter of 2023 were $145.6 million compared to $169.9 million in the fourth quarter of 2022, a 14% decrease due primarily to a reduction in communication product sales as the market rem ...

Financial Performance - Net sales for Q3 2023 were $160.4 million, a decrease of $5.0 million or 3% year-over-year, while net sales for the nine months ended September 30, 2023, increased by $57.0 million to $524.1 million[97]. - Gross profit for Q3 2023 was $54.1 million, a decrease of $4.2 million or 7% compared to Q3 2022, with a gross profit margin of 33.7%[101]. - Net income for Q3 2023 was $15.1 million, an increase of $3.2 million or 28% compared to $11.9 million in Q3 2022, with a $3.4 million increase when excluding currency translation effects[110]. - Net sales for the nine months ended September 30, 2023, were $524.1 million, an increase of $57.0 million or 12% compared to the same period in 2022, with a 13% increase when excluding currency translation effects[112]. - Gross profit for the nine months ended September 30, 2023, was $186.7 million, an increase of $33.8 million or 22% compared to 2022, with a 23% increase when excluding currency translation effects[115]. - Net income for the nine months ended September 30, 2023 was $57.0 million, a 52% increase from $37.9 million in 2022[119]. Sales Performance by Segment - PLP-USA segment experienced a net sales decrease of $7.2 million or 8% due to lower communication sales volumes, partially offset by previous price increases[103]. - The Americas segment reported a net sales decrease of $1.1 million or 4%, primarily due to lower communication and energy product sales[103]. - EMEA segment net sales decreased by $4.2 million or 14%, mainly due to lower communication sales volumes[103]. - Asia-Pacific segment net sales increased by $6.1 million or 28%, driven by higher sales volumes in energy products[103]. - PLP-USA net sales increased by $27.6 million or 11% for the nine months ended September 30, 2023, primarily due to volume increases in energy products and previous price increases[113]. - EMEA net sales increased by $14.0 million or 15% for the nine months ended September 30, 2023, driven by volume increases in communication and energy product sales[114]. - Asia-Pacific net sales increased by $17.0 million or 27% for the nine months ended September 30, 2023, primarily due to volume increases in energy products and special industries sales[114]. Costs and Expenses - Costs and expenses for Q3 2023 were $34.1 million, a decrease of $7.0 million or 17% compared to Q3 2022, with an 18% decrease when excluding currency translation effects[105]. - Costs and expenses in the Asia-Pacific region decreased by $8.3 million, primarily due to a one-time $6.5 million goodwill impairment charge recorded in 2022 that did not recur[105]. - Costs and expenses for the nine months ended September 30, 2023 were $109.5 million, an increase of $1.4 million or 1% compared to 2022[116]. - PLP-USA costs and expenses increased by $6.0 million or 11% year-over-year, primarily due to increased salary-related and insurance costs[116]. - Other expense, net for Q3 2023 was $0.5 million, unfavorable by $0.7 million compared to other income of $0.2 million in Q3 2022, primarily due to increased interest expense[106]. - Other expense, net for the nine months ended September 30, 2023 was $1.8 million, unfavorable by $6.6 million compared to the prior year[117]. Liquidity and Capital Expenditures - The company’s liquidity remains strong with a bank debt to equity ratio of 15.7%[99]. - Net cash provided by operating activities for the nine months ended September 30, 2023 was $88.4 million, compared to $9.2 million in the prior year[127]. - Total debt at September 30, 2023 was $62.8 million, with unused availability under the credit facility at $60.0 million[123]. - The Company used $27.1 million for capital expenditures and $12.1 million for a business acquisition during the first nine months of 2023[122]. - The Company expects future operating cash flows to cover debt repayments and capital expenditures for the next 12 months[126]. - The Company has long-term borrowings of $31.9 million as of September 30, 2023, with a potential interest expense increase of approximately $0.2 million for a 100-basis point rise in interest rates[140]. Market and Operational Strategy - The company continues to invest in expanding into new markets, improving efficiency, and developing new products[99]. - The company is assessing global market opportunities and manufacturing capacity to enhance service to U.S. customers[99]. - The Company aims to develop proprietary technology and maintain high-quality products to meet new industry performance standards[139]. - The Company is focused on strengthening customer relationships and expanding sales in targeted accounts and geographically[139]. - The Company is committed to identifying and integrating acquisitions for profitable growth[139]. Risks and Challenges - The Company is exposed to market risks including fluctuations in interest rates and foreign exchange rates due to operations in various foreign currencies[139]. - The Company faces risks related to the cost, availability, and quality of raw materials, which may be affected by tariffs and supply chain disruptions due to the COVID-19 pandemic[139]. - The Company is evaluating the effects of currency exchange rate fluctuations on its foreign subsidiaries' operations and reported results[139]. - The Company is monitoring the impact of competitive price pressure on its products[139]. - The Company is addressing potential disruptions to its information technology structure and the implications of significant government regulations[139]. - The Company is assessing the impact of the U.S. Inflation Reduction Act on its federal corporate income tax rate and potential tax credits from foreign income[139].

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal quarter ended June 30, 2023 or ☐ Transition Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 for the Transition Period From ________To _______ Commission file number 0-31164 Preformed Line Products Company (Exact name of registrant as specified in its charter) | Ohio | | 34-0676895 | ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal quarter ended March 31, 2023 or ☐ Transition Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 for the Transition Period From ________To _______ Commission file number 0-31164 Preformed Line Products Company (Exact name of registrant as specified in its charter) | Ohio | | 34-0676895 | ...

Financial Performance - Record net sales revenue of $637.0 million for the year ended December 31, 2022, an increase of $119.6 million or 23.1% compared to 2021 [114][120]. - Operating income increased to $69.4 million, representing a margin of 10.9%, up from 9.2% in 2021 [120]. - In 2022, net sales reached $637.0 million, an increase of $119.6 million, or 23%, compared to 2021, with a 28% increase excluding currency translation effects [121]. - Gross profit for 2022 was $215.2 million, up $48.9 million, or 29%, compared to 2021, with a 33% increase when excluding currency translation [122]. - Costs and expenses totaled $145.8 million for 2022, an increase of $27.1 million, or 23%, compared to 2021, with a 28% increase excluding currency translation [123]. - Net income for 2022 was $54.4 million, compared to $35.7 million in 2021, reflecting an increase of $18.7 million, or 52.3% [127]. - PLP-USA's net income increased by $20.3 million, or 83.1%, to $44.7 million in 2022, driven by higher operating income [127]. Sales and Market Performance - The Americas net sales increased by $16.8 million, or 24%, primarily due to contributions from the 2022 Maxxweld and Delta acquisitions [121]. - EMEA net sales rose by $41.9 million, or 44%, mainly due to volume increases in communication product sales [121]. - Asia-Pacific net sales increased by $2.4 million, or 3%, despite flat volume due to COVID-19 mitigation strategies [121]. Costs and Expenses - The impact of inflation on raw materials and transportation costs increased cost of sales by approximately $23.2 million for the year ended December 31, 2022 [114]. - Costs and expenses totaled $145.8 million for 2022, an increase of $27.1 million, or 23%, compared to 2021, with a 28% increase excluding currency translation [123]. Debt and Liquidity - A consolidated increase in debt of $30.0 million as of December 31, 2022, primarily for capital expenditures and business acquisitions [117]. - The company has a bank debt to equity percentage of 25.0%, indicating strong liquidity [114]. - As of December 31, 2022, the company's total debt was $89.5 million, with a bank debt to equity percentage of 25.0% [132]. - The current ratio improved from 2.6 to 1 in 2021 to 2.8 to 1 in 2022 [132]. Cash Flow - Net cash provided by operating activities decreased to $26.2 million in 2022 from $33.6 million in 2021, primarily due to increased working capital funding [137]. - Cash used in investing activities increased to $46.8 million in 2022, up by $28.5 million compared to 2021, driven by higher capital expenditures and business acquisitions [138]. - Net cash provided by financing activities was $22.5 million in 2022, a turnaround from a cash use of $23.2 million in 2021, mainly due to proceeds from long-term debt [139]. - The company expects future operating cash flows to cover debt repayments, capital expenditures, and dividends for the next 12 months and beyond [135]. Strategic Initiatives - The company plans to invest in operational capacity and warehouse space to enhance service for U.S. customers in 2023 [114]. - The company is focused on strategic mergers and acquisitions, new product development, and market expansion [114]. - The company expects growth in communications business from low deployment areas of fixed line and wireless telecommunications services [111]. Tax and Inventory - The effective tax rate for 2022 was 26.2%, slightly lower than 26.9% in 2021, influenced by varying tax rates in foreign jurisdictions [125]. - The allowance for credit losses represented approximately 3.8% of trade receivables at December 31, 2022, compared to 3.0% in 2021 [145]. - The reserve for excess and obsolete inventory was 6.3% of gross inventory for the year ended December 31, 2022, down from 6.6% in 2021 [146]. Interest Rates and Financial Obligations - A 100 basis point increase in interest rates would have resulted in an increase in interest expense of approximately $0.6 million for the year ended December 31, 2022 [158]. - The discount rate used to determine the future benefit obligation was 5.55% at December 31, 2022, compared to 2.92% at December 31, 2021 [160]. Impairments - The company recorded a goodwill impairment charge of $6.5 million in the Asia-Pacific segment due to COVID-19 related project postponements [118].

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0-31164 Preformed Line Products Company (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0-31164 Preformed Line Products Company (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Incor ...

For the transition period from to UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 0-31164 Preformed Line Products Company (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Inco ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2021 or ☐ Transition Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 for the Transition Period From ________To _______ Commission file number 0-31164 Preformed Line Products Company (Exact name of registrant as specified in its charter) | Ohio | 34-0676895 | | -- ...