Exhibit 99.1.

NORTHWEST INDIANA BANCORP

ANNOUNCES EARNINGS FOR THE TWELVE AND THREE MONTHS ENDED DECEMBER 31, 2017

Munster, Indiana - NorthWest Indiana Bancorp (the “Bancorp”), the financial holding company for Peoples Bank (the “Bank”), reported earnings of $9.0 million for twelve months ended December 31, 2017, compared to $9.1 million for the twelve months ended December 31, 2016. The earnings of $9.0 million for 2017 represent a 2.0% decrease compared to the earnings for 2016. The Bancorp’s earnings for 2017 were negatively impacted by newly enacted corporate tax legislation. During December 2017, the Bancorp was required to revalue its net deferred tax asset, resulting in a one-time write down of $517 thousand that was recorded as additional income tax expense. Without the one-time write down of the net deferred tax asset the Bancorp’s net income for the twelve months ended December 31, 2017 would have totaled $9.5 million, an increase of 3.7%. The Bancorp’s net income, as adjusted for the net deferred tax asset, is a non-GAAP financial measure. See the table at the end of this document for a reconciliation to the most directly comparable GAAP measure.

The earnings of $9.0 million for the twelve months ended December 31, 2017, represent $3.13 earnings per basic and diluted share. For 2017, the return on average assets (ROA) was 0.98% and the return on average equity (ROE) was 9.90%. Without the one-time write down of the net deferred tax asset, the 2017 earnings per basic and diluted share was $3.31, return on average assets (ROA) was 1.04% and the return on average equity (ROE) was 10.47%.

“Notwithstanding the one-time write down of our net deferred tax asset, Peoples Bank would have again delivered another year of record earnings. Our consistent performance was the product of good results from organic business development in all of the Bank’s business lines. Strong loan growth in the fourth quarter and anticipated savings related to lower corporate tax rates position the Bank for a solid 2018,” said Benjamin Bochnowski, president & chief executive officer.

“The result this year is the culmination of the Bank’s five-year strategic vision,” continued Bochnowski. “As a result, the Board also approved a one-time bonus to all Bank employees as a way to reward the individuals who worked so hard to bring this plan to fruition. Based on service in 2017, full time employees will receive a one-time bonus of up to $500, and part-time employees will receive a bonus of up to $250. This one-time bonus is on top of incentives and profit sharing earned by the employees of Peoples Bank through their hard work and dedication.”

“The Bancorp’s 2017 earnings were supported by its ability to generate $30.8 million in net interest income, which increased by $712 thousand during the year. Even as the Federal Reserve continued to increase short-term interest rates, the Bancorp’s net interest margin remained stable at 3.84%. During the year, loan and investment security balances increased by $47.4 million, which generated additional interest income to offset increased funding costs. In addition, the Bancorp’s earnings have been enhanced by increased noninterest income and well managed operating expenses,” said Robert Lowry, chief financial officer.

“During 2017, the Bancorp’s asset quality and capital position remained strong. Nonperforming loans to total loans was 0.84% at the end of 2017. While the allowance for loan losses (ALL) as a percentage of non-performing loans, or coverage ratio, was 143.3% at year-end. The Bancorp’s tier 1 leverage capital to adjusted average assets increased to 9.6%. The Bancorp is well positioned for continued growth,” said Robert Lowry, chief financial officer.

For the three months ended December 31, 2017, the Bancorp’s net income totaled $1.9 million, compared to $2.3 million for the three months ended December 31, 2016, a decrease of 19.0%. The net income of $1.9 million for the three months ended December 31, 2017 represents $0.66 earnings per basic and diluted share. For the three months ended December 31, 2017, the ROA was 0.82% and the ROE was 8.11%. The earnings for the three months ended December 31, 2017 was also negatively impacted by the newly enacted corporate tax legislation by the one-time $517,000 net deferred tax asset write down that was realized in December 2017.

Net Interest Income

Net interest income, the difference between interest income from loans and investments and interest expense paid to fund providers, totaled $30.8 million for the twelve months ended December 31, 2017, compared to $30.1 million for the twelve months ended December 31, 2016, an increase of $712 thousand or 2.4%. The Bancorp’s net interest margin on a tax-adjusted basis was 3.84% for the twelve months ended December 31, 2017, compared to 3.85% for the twelve months ended December 31, 2016. For the three months ended December 31, 2017, net interest income totaled $7.8 million, compared to $7.6 million for the three months ended December 31, 2016 for an increase of $243 thousand or 3.2%. The Bancorp’s net interest margin on a tax-adjusted basis was 3.86% for the three months ended December 31, 2017, compared to 3.82% for the three months ended December 31, 2016.

Noninterest Income

Noninterest income from banking activities totaled $7.8 million for the twelve months ended December 31, 2017, compared to $7.6 million for the twelve months ended December 31, 2016, an increase of $139 thousand or 1.8%. For the three months ended December 31, 2017, noninterest income from banking activities totaled $1.93 million, compared to $1.92 million for the three months ended December 31, 2016, an increase of $15 thousand or 0.8%. During 2017, the Bancorp has seen increases in its noninterest income from banking services and wealth management operations. Also during 2017, noninterest income from mortgage loan sales decreased due to lower market origination volume.

Noninterest Expense

Noninterest expense totaled $25.5 million for the twelve months ended December 31, 2017, compared to $24.7 million for the twelve months ended December 31, 2016, an increase of $779 thousand or 3.2%. For the three months ended December 31, 2017, noninterest expense totaled $6.2 million, compared to $6.1 million for the three months ended December 31, 2016, an increase of $121 thousand or 2.0%. During 2017, the Bancorp has seen increases in its noninterest expense from costs related to third-party services, foreclosure and collection activity, marketing of brand and financial services, and increased compensation related to annual salary adjustments. Decreases in noninterest expense for 2017 were realized for occupancy costs and deposit insurance premiums.

Lending

The Bancorp’s loan portfolio totaled $620.2 million at December 31, 2017, compared to $583.7 million at December 31, 2016, an increase of $36.6 million or 6.3%. During 2017, the Bancorp originated $337.8 million in new loans. During the twelve months ended December 31, 2017, the Bancorp saw its commercial real estate, construction and land development, multifamily, HELOCs and junior lien loan balances increase. During the twelve months ended December 31, 2017, $44.0 million in newly originated fixed rate mortgage loans were sold into the secondary market resulting in gains of $1.2 million. The loan portfolio represents 71.2% of earning assets and is comprised of 66.2% commercial related credits.

Investing

The Bancorp’s securities portfolio totaled $244.5 million at December 31, 2017, compared to $233.6 million at December 31, 2016, an increase of $10.9 million or 4.7%. The securities portfolio represents 28.1% of earning assets and provides a consistent source of liquidity and earnings to the Bancorp. Cash and cash equivalents totaled $12.7 million at December 31, 2017, compared to $45.1 million at December 31, 2016, a decrease of $32.4 million. During 2017, cash and cash equivalents were used fund loan and securities growth.

Funding

At December 31, 2017, core deposits totaled $609.1 million, compared to $594.1 million at December 31, 2016, an increase of $15.0 million or 2.5%. Core deposits include checking, savings, and money market accounts and represented 76.8% of the Bancorp’s total deposits at December 31, 2017. During the 2017, balances for consumer, business, not for profit, and public funds all increased. The increase in these core deposits is a result of management’s sales efforts along with customer preferences for competitively priced short-term liquid investments. At December 31, 2017, balances for certificates of deposit totaled $183.9 million, compared to $185.7 million at December 31, 2016, a decrease of $1.7 million or 0.9%. In addition, at December 31, 2017, borrowings and repurchase agreements totaled $32.2 million, compared to $39.8 million at December 31, 2016, a decrease of $7.6 million or 19.2%. During 2017, management has replaced high cost borrowings with core accounts.

Asset Quality

At December 31, 2017, non-performing loans totaled $5.2 million, compared to $6.1 million at December 31, 2016, a decrease of $882 thousand or 14.44%. The Bancorp’s ratio of non-performing loans to total loans was 0.84% at December 31, 2017, compared to 1.05% at December 31, 2016. The decrease in the ratio of non-performing loans for 2017 is primarily the result of charge-offs to non-accruing residential real estate loans totaling $912 thousand. In addition, the Bancorp’s ratio of non-performing assets to total assets was 1.00% at December 31, 2017, compared to 1.10% at December 31, 2016.

For the twelve months ended December 31, 2017, $1.2 million in provisions to the ALL were required, compared to $1.3 million for the twelve months ended December 31, 2016, a decrease of $68 thousand or 5.4%. The ALL provision decrease is primarily a result of overall non-performing and impaired loans declining for the period. For the twelve months ended December 31, 2017, charge-offs, net of recoveries, totaled $1.4 million, compared to charge-offs, net of recoveries of $522 thousand for the twelve months ended December 31, 2016. The net loan charge-offs for 2017 were comprised of $956 thousand in residential real estate loans, $347 thousand in commercial business loans, $60 thousand in home equity loans, and $53 thousand in consumer loans. At December 31, 2017, the allowance for loan losses totaled $7.5 million and is considered adequate by management. The allowance for loan losses as a percentage of total loans was 1.21% at December 31, 2017, compared to 1.32% at December 31, 2016. The allowance for loan losses as a percentage of non-performing loans, or coverage ratio, was 143.3% at December 31, 2017, compared to 126.1% at December 31, 2016.

Capital Adequacy

At December 31, 2017, shareholders’ equity stood at $92.1 million, and tangible capital represented 9.9% of total assets. The Bancorp’s regulatory capital ratios at December 31, 2017 were 14.0% for total capital to risk-weighted assets, 12.9% for both common equity tier 1 capital to risk-weighted assets and tier 1 capital to risk-weighted assets, and 9.6% for tier 1 leverage capital to adjusted average assets. Under all regulatory capital requirements, the Bancorp is considered well capitalized. The book value of the Bancorp’s stock stood at $32.14 per share at December 31, 2017.

About NorthWest Indiana Bancorp

NorthWest Indiana Bancorp is a locally managed and independent financial holding company headquartered in Munster, Indiana, whose activities are primarily limited to holding the stock of Peoples Bank. Peoples Bank provides a wide range of personal, business, electronic and wealth management financial services from its 16 locations in Lake and Porter Counties in Northwest Indiana. NorthWest Indiana Bancorp’s common stock is traded on the OTC Bulletin Board under the symbol NWIN. The website ibankpeoples.com provides information on Peoples Bank’s products and services, and NorthWest Indiana Bancorp’s investor relations.

Forward Looking Statements

“Forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995 may be included in this release. A variety of factors could cause the Bancorp’s actual results to differ from those expected at the time of this release. These include, but are not limited to, changes in economic conditions in the Bancorp’s market area, changes in policies by regulatory agencies, fluctuation in interest rates, demand for loans in the Bancorp’s market area, economic conditions in the financial services industry, the Bancorp’s ability to successfully integrate the operations of recently acquired institutions, competition and other risks set forth in the Bancorp’s reports filed with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended December 31, 2016. Readers are urged to carefully review and consider the various disclosures made by the Bancorp in its periodic reports filed with the Securities and Exchange Commission. Forward-looking statements speak only as of the date they are made, and the Bancorp undertakes no obligation to update them in light of new information or future events.

Disclosure Regarding Non-GAAP Measures

This report refers to certain financial measures that are identified as non-GAAP. The Bancorp believes that these non-GAAP measures are helpful to investors to better understand the Bancorp’s earnings at the date of this filing. This supplemental information should not be considered in isolation or as a substitute for the related GAAP measures. See the attached table at the end of this press release for a reconciliation of the non-GAAP earnings ratios identified herein and their most comparable GAAP measures.

NorthWest Indiana Bancorp

Financial Report

NorthWest Indiana Bancorp

Financial Report

Balance Sheet Data

(Dollars in thousands)

(1) Effective January 1, 2015, new minimum capital requirements went into effect, which increased the Tier 1 capital to risk-weighted assets ratio to 8.0% to be well capitalized and also introduced a new common equity Tier 1 capital raio of 4.5% (6.5% to be well capitalized).