Citizens Financial Services, Inc.

2023 was a year of… GROWTH!

History of Successful Growth Total Asset Growth since 2000

HVB Acquisition

Williamsport Entry

2023 Financial Performance

Efficiency Ratio History Finished in the 93rd percentile compared to the CZFS peer group for 2023 without one-time costs. Finished in the 40th percentile compared to the CZFS peer group for 2023 with one-time costs.

Return on Equity History Finished in the 47th percentile compared to the CZFS peer group for 2023 without one-time costs. Finished in the 20th percentile compared to the CZFS peer group for 2023 with one-time costs.

Return on Assets History Finished in the 80th percentile compared to the CZFS peer group for 2023 without one-time costs. Finished in the 27th percentile compared to the CZFS peer group for 2023 with one-time costs.

Cash Dividends Paid History 1% stock dividend paid in 2019, 2020, 2021, 2022, and 2023

Outperforming the Competition (1) Please see appendix for non-GAAP reconciliations Note: Median values shown for peer groups Note: Financial data shown represents most recent quarter data reported as of December 31, 2023 CZFS is a top performer among its peers, with key metrics above peer medians PA NASDAQ Listed Banks MD, NY & PA NASDAQ Banks $1.0B – $4.0B PA Banks $1.0B - $3.0B MRQ Core ROAA(1): 1.00% 0.78% 0.86% 0.76% MRQ Core ROATCE(1): 16.56% 8.72% 11.15% 10.82% MRQ Efficiency: 61.63% 68.74% 67.10% 71.31% MRQ NIM: 3.13% 3.10% 3.15% 2.92%

Key Financial Highlights Top Tier Consolidated (1) Please see appendix for non-GAAP reconciliations (2) 6/30/2023 profitability shown is core profitability financial data

Liquidity Position and Sources Note: Bank level regulatory data shown Liquidity Well-Managed to Cover Short-Term Needs

Non-GAAP Reconciliation

CZFS Common Stock

Timeline Date Event Stock Price 10/19/2022 HVBC Deal Announced $65.35 02/15/2023 Shareholders Vote to Approve Deal $86.14 04/28/2023 Russell 3000 Rank Day $85.73 06/13/2023 HVBC Shareholder Consideration Election $85.30 06/16/2023 HVBC Deal Closes $86.67 06/23/2023 Russell 3000 Reconstitution $84.15 06/30/2023 End Second Quarter $74.47 09/30/2023 End Third Quarter $47.92 12/31/2023 End Fourth Quarter $64.72

Stock Performance to Peer Peer Group 2023Y Stock Performance (%) 4Q23 Stock Performance (%) 2023Y P/TBV (%) PA Nasdaq Listed Banks -5.6 25.8 121.1 MD, NY, PA Nasdaq Listed Banks $1.0B-$4.0B -1.7 26.5 126.9 PA Banks $1.0B - $3.0B -5.9 12.0 125.7 CZFS Proxy Peer Banks -5.4 23.3 128.9 CZFS -14.8 38.6 174.0

2023 & 2024 Challenges

Challenges Turbulent Economy The Fed managed to bring down inflation without the economy tumbling into a recession in 2023. Economic, political and global uncertainty will cloud 2024.

Challenges Staffing Struggles Staffing shortages were experienced by all businesses throughout 2023. FCCB will continue to focus on our “hire to retire” mentality to retain satisfied employees.

Challenges Cybercrime Our customers continue to be targets of financial crimes and fraud. FCCB is committed to help customers mitigate such risks.

Challenges Regulatory Requirements There is a lot more coming at banks as an industry. Some bills, like ACRE, help to sustain and grow rural and ag communities, while other bills, like 1071, if passed, will have a negative effect on small businesses.

Challenges Customer Preferences & Digital Customers expect more convenience and personalization from both digital banking experiences and traditional banking channels.

2023 Stewardship

Stewardship Helping the Homeless As a result of our partnership with the FHLB and their Home4Good Program, 18 organizations will receive $1.4 million in grants to help those who are homeless.

Stewardship Education In 2023 FCCB donated $345,000 to organizations that support education.

Stewardship Food Insecurity FCCB donated $25,000 to the Central PA Food Bank in 2023, bringing our total donation to $103,000 in just four years.

Stewardship Fighting Cancer Our annual Cancer Classic golf tournament raised $20,000 in 2023 for a cumulative total of $301,000.

Stewardship Sustaining Agriculture In the ag arena, FCCB funds the PA Farm Bureau’s Mobile Ag Lab, supports local 4-H and FFA at community fairs, and grants our annual Ag Scholarships.

Happy Retirement Gene Kosa Served 23 years on the CZFS & FCCB Boards Chairman of the Audit Committee Member of Credit Committee Strong advocate of the ag industry