Simpson Manufacturing Co., Inc. — fact timeline

Simpson Manufacturing Co., Inc. shareholders approved Ratification of the selection of Grant Thornton LLP as independent registered public accounting firm for 2026 at the 2026-05-06 meeting.

“Proposal 3: Ratification of the selection of Grant Thornton LLP as the Company’s independent registered public accounting firm for 2026. FOR AGAINST ABSTAIN BROKER NON-VOTES 38,577,835 116,705 58,240 0 As a result, the selection of Grant Thornton LLP by the Company's board of directors as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026 was ratified by the stockholders.”

Simpson Manufacturing Co., Inc. shareholders approved Advisory approval of the compensation of the Company’s named executive officers at the 2026-05-06 meeting.

“Proposal 2: Approval, on an advisory basis, of the compensation of the Company’s named executive officers. FOR AGAINST ABSTAIN BROKER NON-VOTES 36,669,378 644,944 30,793 1,407,665 As a result, the compensation paid to the Company's named executive officers as disclosed in the Company’s proxy statement for the Annual Meeting was approved by the stockholders.”

Simpson Manufacturing Co., Inc. shareholders approved Election of eight directors at the 2026-05-06 meeting.

“Proposal 1 : Election of Directors. Broker For Against Abstain Non-Votes James Andrasick 36,731,368 576,424 37,323 1,407,665 Chau Banks 36,967,419 356,164 21,532 1,407,665 Felica Coney 37,281,551 30,150 33,414 1,407,665 Philip Donaldson 37,206,780 117,141 21,194 1,407,665 Angela Drake 37,177,599 145,503 22,013 1,407,665 Celeste Volz Ford 36,700,436 621,885 22,794 1,407,665 Kenneth Knight 37,295,980 15,608 33,527 1,407,665 Michael Olosky 37,018,648 287,307 39,160 1,407,665 As a result, the eight individuals were elected by the stockholders as directors of the Company, each to hold office until the Company's 2027 annual meeting of stockholders or until his or her successor has been duly qualified and elected.”

Simpson Manufacturing Co., Inc. reported first quarter of 2026 results: revenue $587,964, net income $88,216, EPS $2.13. Guidance reaffirmed.

“Consolidated 2026 First Quarter Highlights Three Months Ended Year-Over- March 31, Year 2026 2025 Change (In thousands, except per share data and percentages) Net sales $ 587,964 $ 538,895 9.1 % Gross profit 265,891 250,566 6.1 % Gross profit margin 45.2 % 46.5 % Total operating expenses 150,656 148,195 1.7 % Income from operations 114,617 102,319 12.0 %”

Simpson Manufacturing Co., Inc. entered into Second Amended and Restated Credit Agreement with Wells Fargo Bank, National Association, as administrative agent, and the other parties party thereto valued at 5-year revolving credit facility of $600,000,000, 5-year term loan facility of $300,000,000 (effective 2025-12-16).

“On December 16, 2025, Simpson Manufacturing Co., Inc. (the “Company”) entered into that certain Second Amended and Restated Credit Agreement (the “Second Amended and Restated Credit Agreement”), among the Company, the subsidiaries of the Company party thereto as guarantors, the lenders party thereto, Wells Fargo Bank, National Association (“Wells Fargo”), as administrative agent, and the other parties party thereto.”

Simpson Manufacturing Co., Inc. incurred term loan of $300,000,000 with Wells Fargo Bank, National Association maturing 5-year.

“(the “Company”) entered into that certain Second Amended and Restated Credit Agreement (the “Second Amended and Restated Credit Agreement”), among the Company, the subsidiaries of the Company party thereto as guarantors, the lenders party thereto, Wells Fargo Bank, National Association (“Wells Fargo”), as administrative agent, and the other parties party thereto.”

Simpson Manufacturing Co., Inc. incurred revolving credit of $600,000,000 with Wells Fargo Bank, National Association maturing 5-year.

“The Second Amended and Restated Credit Agreement provides for a 5-year revolving credit facility of $600,000,000”

Angela Drake was appointed as independent, non-employee director at Simpson Manufacturing Co., Inc..

“On December 31, 2024 the Board of Directors (the “Board”) of Simpson Manufacturing Co., Inc. (the “Company”), upon recommendation of the Nominating and CSR Committee of the Board, appointed Angela Drake as an independent, non-employee director of the Company, effective on January 1, 2025.”

Matt Dunn was appointed as Chief Financial Officer and Treasurer at Simpson Manufacturing Co., Inc..

“the Company announced that Matt Dunn, currently the Company's Senior Vice President, Finance, will succeed Mr. Magstadt as Chief Financial Officer and Treasurer, effective January 1, 2025.”

Brian Magstadt retired as Chief Financial Officer and Treasurer at Simpson Manufacturing Co., Inc..

“Brian Magstadt, notified Simpson Manufacturing Co, Inc. (the "Company") on July 25, 2024, that he will retire as Chief Financial Officer and Treasurer, effective December 31, 2024.”

Brian Magstadt departed as Chief Financial Officer and Treasurer at Simpson Manufacturing Co., Inc..

“On July 31, 2024, Simpson Manufacturing Co, Inc. (the “Company”) issued a press release announcing that on July 25, 2024, Brian Magstadt, Chief Financial Officer and Treasurer, notified the Company that he will retire from the Company effective December 31, 2024.”

Simpson Manufacturing Co., Inc.: Approved and filed an amendment to the Certificate of Incorporation to adopt officer exculpation provisions limiting liability of officers for monetary damages for breach of fiduciary duty (effective 2024-05-02).

“The Officer Exculpation Amendment amends the Company’s Certificate of Incorporation to provide that no officer of the Company shall be liable to the Company or it stockholders for monetary damages for breach of fiduciary duty as an officer”

Simpson Manufacturing Co., Inc. shareholders approved Ratification of the selection of Grant Thornton LLP as the Company’s independent registered public accounting firm for 2024 at the 2024-05-01 meeting.

“Proposal 4: Ratification of the selection of Grant Thornton LLP as the Company’s independent registered public accounting firm for 2024. FOR AGAINST ABSTAIN BROKER NON-VOTES 38,511,501 208,553 23,987 0”

Simpson Manufacturing Co., Inc. shareholders approved Approval of an amendment to the Company’s Certificate of Incorporation to adopt provisions limiting the liability of certain officers as permitted by Delaware law at the 2024-05-01 meeting.

“Proposal 3: Approval of an amendment to the Company’s Certificate of Incorporation to adopt provisions limiting the liability of certain officers as permitted by Delaware law. FOR AGAINST ABSTAIN BROKER NON-VOTES 33,916,622 3,165,168 30,192 1,632,059”

Simpson Manufacturing Co., Inc. shareholders approved Approval, on an advisory basis, of the compensation of the Company’s named executive officers at the 2024-05-01 meeting.

“Proposal 2: Approval, on an advisory basis, of the compensation of the Company’s named executive officers. FOR AGAINST ABSTAIN BROKER NON-VOTES 36,910,868 152,290 48,824 1,632,059”

Simpson Manufacturing Co., Inc. shareholders approved Election of eight directors at the 2024-05-01 meeting.

“Proposal 1: Election of Directors. Broker For Against Abstain Non-Votes James S. Andrasick 36,199,218 872,021 40,743 1,632,059”

Roger Dankel departed as Executive Vice President, North America Sales at Simpson Manufacturing Co., Inc..

“Roger Dankel notified the Company that he will retire from the Company on June 30, 2025.”

Simpson Manufacturing Co., Inc. reported the first quarter of 2024 results: revenue $530.6 million, net income $75.4 million, EPS $1.77 per diluted share.

“Press Release dated April 22, 2024 SIMPSON MANUFACTURING CO., INC. ANNOUNCES 2024 FIRST QUARTER FINANCIAL RESULTS Pleasanton, CA – April 22, 2024 l Net sales of $530.6 million l Income from operations of $96.1 million l Net income per diluted share of $1.77 Simpson Manufacturing Co., Inc. (the “Company”) (NYSE: SSD), an industry leader in engineered structural connectors and building solutions, today announced its financial results for the first quarter of 2024.”

Simpson Manufacturing Co., Inc. reported financial results for the fourth quarter and full year ended December 31, 2023.

“On February 5, 2024 , Simpson Manufacturing Co., Inc. issued a press release announcing financial results for the fourth quarter and full year ended December 31, 2023, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by this reference.”

Simpson Manufacturing Co., Inc. reported third quarter of 2023 results: revenue $580.1 million, net income $104.0 million, EPS $2.43 per diluted share. Guidance reaffirmed.

“--- Press Release dated October 23, 2023 SIMPSON MANUFACTURING CO., INC. ANNOUNCES 2023 THIRD QUARTER FINANCIAL RESULTS Pleasanton, CA – October 23, 2023 l Net sales of $580.1 million increased 4.8% year-over-year l Income from operations of $140.2 million increased 14.2% year-over-year l Diluted earnings per share of $2.43 increased 18.0% year-over-year l”

Kevin Swartzendruber retired as Senior Vice President of Finance at Simpson Manufacturing Co., Inc..

“On October 6, 2023, Kevin Swartzendruber, Senior Vice President of Finance of Simpson Manufacturing Co., Inc. (the "Company") provided notice of his intent to retire effective March 1, 2024.”

Simpson Manufacturing Co., Inc. reported the second quarter of 2023 results: revenue $597.6 million, net income $107.2 million, EPS $2.50 per diluted share.

“(EX-99.1) --- Press Release dated July 24, 2023 SIMPSON MANUFACTURING CO., INC. ANNOUNCES 2023 SECOND QUARTER FINANCIAL RESULTS Pleasanton, CA – July 24, 2023 l Net sales of $597.6 million increased 0.7% year-over-year l Income from operations of $145.0 million increased 9.0% year-over-year l Diluted earnings per share of $2.50 increased 15.7% year-over-year”

Felica Coney was appointed as Director at Simpson Manufacturing Co., Inc..

“appointed Chau Banks and Felica Coney as independent, non-employee directors of the Company, effective on June 1, 2023.”

Chau Banks was appointed as Director at Simpson Manufacturing Co., Inc..

“appointed Chau Banks and Felica Coney as independent, non-employee directors of the Company, effective on June 1, 2023.”

Simpson Manufacturing Co., Inc. shareholders approved To ratify the selection of Grant Thornton LLP as the Company’s independent registered public accounting firm for the 2023 fiscal year. at the 2023-04-26 meeting.

“Proposal 4: Ratification of the selection of Grant Thornton LLP as the Company’s independent registered public accounting firm for 2023. FOR AGAINST ABSTAIN BROKER NON-VOTES 40,210,141 173,081 30,888 0 As a result, the selection of Grant Thornton LLP by the Company's board of directors as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2023 was ratified by the stockholders.”

Simpson Manufacturing Co., Inc. shareholders approved To approve, on an advisory basis, the frequency of future advisory votes to approve compensation of the Company’s named executive officers. at the 2023-04-26 meeting.

“Proposal 3: Approval, on an advisory basis, of the frequency of future advisory votes to approve named executive officer compensation. 1 YEAR 2 YEARS 3 YEARS ABSTAIN BROKER NON-VOTES 37,475,997 2,736 1,124,214 33,714 1,777,449 As a result, the Company will include a stockholder vote on the compensation of its named executive officers in its proxy materials and hold such a vote every year until the occurrence of the next vote on the frequency of stockholder votes on the compensation of the Company’s named executive officers pursuant to section 14A(a)(2) of the Securities Exchange Act of 1934 (15 U.S.C. 78n-1(a)(2)).”

Simpson Manufacturing Co., Inc. shareholders approved To approve, on an advisory basis, the compensation of the Company’s named executive officers. at the 2023-04-26 meeting.

“Proposal 2: Approval, on an advisory basis, of the compensation of the Company’s named executive officers. FOR AGAINST ABSTAIN BROKER NON-VOTES 38,411,194 158,667 66,800 1,777,449 As a result, the compensation paid to the Company's named executive officers as disclosed in the Company’s proxy statement for the Annual Meeting was approved by the stockholders.”

Simpson Manufacturing Co., Inc. shareholders approved To elect eight directors, each to hold office until the Company's 2024 annual meeting of stockholders or until their successors are duly qualified and elected. at the 2023-04-26 meeting.

“Proposal 1 : Election of Directors. Broker For Against Abstain Non-Votes James S. Andrasick 37,684,086 890,138 62,437 1,777,449 Jennifer A. Chatman 35,974,148 2,606,126 56,387 1,777,449 Gary M. Cusumano 36,414,568 2,165,298 56,795 1,777,449 Philip E. Donaldson 38,404,683 192,185 39,793 1,777,449 Celeste Volz Ford 38,385,314 194,849 56,498 1,777,449 Kenneth D. Knight 38,201,969 375,516 59,176 1,777,449 Robin G. MacGillivray 37,517,764 1,062,227 56,670 1,777,449 Michael Olosky 38,089,885 507,778 38,998 1,777,449 As a result, the eight individuals were elected by the stockholders as directors of the Company, each to hold office until the Company's 2024 annual meeting of stockholders or until his or her successor has been duly qualified and elected.”

Simpson Manufacturing Co., Inc. reported the quarter ended March 31, 2023 results: revenue $534.4 million, net income $88.0 million, EPS $2.05 per diluted share.

“(EX-99.1) --- Press Release dated April 24, 2023 SIMPSON MANUFACTURING CO., INC. ANNOUNCES 2023 FIRST QUARTER FINANCIAL RESULTS Pleasanton, CA – April 24, 2023 l Net sales of $534.4 million increased 8.3% year-over-year l Income from operations of $118.4 million decreased 4.9% year-over-year l Diluted earnings per share of $2.05 decreased 6.0% year-over-year Simpson”

Simpson Manufacturing Co., Inc.: Amended and restated bylaws to address universal proxy rules and related procedural requirements, effective immediately upon board approval on March 8, 2023 (effective 2023-03-08).

“On March 8, 2023, the Board of Directors (the “Board”) of Simpson Manufacturing Co., Inc. (the “Company”) approved and adopted amended and restated bylaws (the “Amended and Restated Bylaws”) of the Company, which became immediately effective, to address the universal proxy rules recently adopted by the Securities and Exchange Commission.”

Mike Olosky was appointed as President and Chief Executive Officer at Simpson Manufacturing Co., Inc..

“Mike Olosky, currently the President and Chief Operating Officer of Simpson Manufacturing Co, Inc. (the “Company”), will succeed Karen Colonias as President and Chief Executive Officer of the Company effective January 1, 2023.”

Karen Colonias departed as President and Chief Executive Officer at Simpson Manufacturing Co., Inc..

“Mike Olosky, currently the President and Chief Operating Officer of Simpson Manufacturing Co, Inc. (the “Company”), will succeed Karen Colonias as President and Chief Executive Officer of the Company effective January 1, 2023.”

Mike Olosky was appointed as Director at Simpson Manufacturing Co., Inc..

“Mr. Olosky will be appointed to the Board effective January 1, 2023”

Mike Olosky changed role as President and Chief Executive Officer at Simpson Manufacturing Co., Inc..

“Mike Olosky, currently the Company’s President and Chief Operating Officer, will succeed Ms. Colonias as President and Chief Executive Officer effective January 1, 2023.”

Karen Colonias was appointed as Executive Advisor at Simpson Manufacturing Co., Inc..

“Ms. Colonias will remain employed as an Executive Advisor of the Company to assist with the transition until June 30, 2023”

Karen Colonias departed as Chief Executive Officer at Simpson Manufacturing Co., Inc..

“Karen Colonias notified the Company that she will retire from the Company on June 30, 2023 and step down from her position as Chief Executive Officer, effective December 31, 2022.”

Karen W. Colonias changed role as Chief Executive Officer at Simpson Manufacturing Co., Inc..

“As a result of Mr. Olosky’s promotion, Ms. Colonias, who previously served as President and Chief Executive Officer of the Company, will continue to serve as Chief Executive Officer of the Company.”

Michael Olosky changed role as President and Chief Operating Officer at Simpson Manufacturing Co., Inc..

“promoted Michael Olosky, currently the Chief Operating Officer of the Company, to the position of President and Chief Operating Officer of the Company effective immediately.”

Terry Hammons resigned as Senior Vice President, General Counsel and Corporate Secretary at Simpson Manufacturing Co., Inc..

“On September 22, 2021, Mr. Terry Hammons informed Simpson Manufacturing Co., Inc. (the “Company”) of his intention to resign as Senior Vice President, General Counsel and Corporate Secretary of the Company, effective October 20, 2021.”