WASH

wash-202601280000737468FALSE00007374682026-01-282026-01-28

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 28, 2026

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401)348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

COMMON STOCK, $.0625 PAR VALUE PER SHARE

WASH

The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On January 28, 2026, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to fourth quarter 2025 consolidated earnings. A copy of the press release relating to such announcement, dated January 28, 2026, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated January 28, 2026* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:January 28, 2026By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202510200000737468FALSE00007374682025-10-202025-10-20

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 20, 2025

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401)348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

COMMON STOCK, $.0625 PAR VALUE PER SHARE

WASH

The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 20, 2025, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to third quarter 2025 consolidated earnings. A copy of the press release relating to such announcement, dated October 20, 2025, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated October 20, 2025* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:October 20, 2025By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202507210000737468FALSE00007374682025-07-212025-07-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 21, 2025

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401)348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

COMMON STOCK, $.0625 PAR VALUE PER SHARE

WASH

The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 21, 2025, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to second quarter 2025 consolidated earnings. A copy of the press release relating to such announcement, dated July 21, 2025, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated July 21, 2025* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:July 21, 2025By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202504210000737468FALSE00007374682025-04-212025-04-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 21, 2025

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401)348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

COMMON STOCK, $.0625 PAR VALUE PER SHARE

WASH

The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 21, 2025, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to first quarter 2025 consolidated earnings. A copy of the press release relating to such announcement, dated April 21, 2025, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated April 21, 2025* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:April 21, 2025By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202501290000737468FALSE00007374682025-01-292025-01-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 29, 2025

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401)348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

COMMON STOCK, $.0625 PAR VALUE PER SHARE

WASH

The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On January 29, 2025, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to fourth quarter 2024 consolidated earnings. A copy of the press release relating to such announcement, dated January 29, 2025, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated January 29, 2025* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:January 29, 2025By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202410210000737468FALSE00007374682024-10-212024-10-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 21, 2024

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 21, 2024, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to third quarter 2024 consolidated earnings. A copy of the press release relating to such announcement, dated October 21, 2024, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated October 21, 2024* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:October 21, 2024By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202407220000737468FALSE00007374682024-07-222024-07-22

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 22, 2024

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 22, 2024, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to second quarter 2024 consolidated earnings. A copy of the press release relating to such announcement, dated July 22, 2024, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated July 22, 2024* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:July 22, 2024By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202404220000737468FALSE00007374682024-04-222024-04-22

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 22, 2024

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 22, 2024, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to first quarter 2024 consolidated earnings. A copy of the press release relating to such announcement, dated April 22, 2024, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated April 22, 2024* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Furnished herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:April 22, 2024By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202401240000737468FALSE00007374682024-01-242024-01-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 24, 2024

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On January 24, 2024, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to fourth quarter 2023 consolidated earnings. A copy of the press release relating to such announcement, dated January 24, 2024, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated January 24, 2024* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:January 24, 2024By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202310230000737468FALSE00007374682023-10-232023-10-23

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 23, 2023

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 23, 2023, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to third quarter 2023 consolidated earnings. A copy of the press release relating to such announcement, dated October 23, 2023, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated October 23, 2023* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:October 23, 2023By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202307240000737468FALSE00007374682023-07-242023-07-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 24, 2023

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 24, 2023, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to second quarter 2023 consolidated earnings. A copy of the press release relating to such announcement, dated July 24, 2023, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated July 24, 2023* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:July 24, 2023By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202304240000737468FALSE00007374682023-04-242023-04-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 24, 2023

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 24, 2023, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to first quarter 2023 consolidated earnings. A copy of the press release relating to such announcement, dated April 24, 2023, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated April 24, 2023* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:April 24, 2023By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202301250000737468FALSE00007374682023-01-252023-01-25

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 25, 2023

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On January 25, 2023, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to fourth quarter 2022 consolidated earnings. A copy of the press release relating to such announcement, dated January 25, 2023, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated January 25, 2023* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:January 25, 2023By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202210240000737468FALSE00007374682022-10-242022-10-24

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 24, 2022

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 24, 2022, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to third quarter 2022 consolidated earnings. A copy of the press release relating to such announcement, dated October 24, 2022, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated October 24, 2022* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:October 24, 2022By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202207250000737468FALSE00007374682022-07-252022-07-25

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 25, 2022

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 25, 2022, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to second quarter 2022 consolidated earnings. A copy of the press release relating to such announcement, dated July 25, 2022, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated July 25, 2022* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:July 25, 2022By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202204250000737468FALSE00007374682022-04-252022-04-25

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 25, 2022

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 25, 2022, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to first quarter 2022 consolidated earnings. A copy of the press release relating to such announcement, dated April 25, 2022, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated April 25, 2022* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:April 25, 2022By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202201260000737468FALSE00007374682022-01-262022-01-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 26, 2022

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On January 26, 2022, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to fourth quarter 2021 consolidated earnings. A copy of the press release relating to such announcement, dated January 26, 2022, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated January 26, 2022* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:January 26, 2022By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202110250000737468FALSE00007374682021-10-252021-10-25

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 25, 2021

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 25, 2021, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to third quarter 2021 consolidated earnings. A copy of the press release relating to such announcement, dated October 25, 2021, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated October 25, 2021* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:October 25, 2021By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202107210000737468FALSE00007374682021-07-212021-07-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 21, 2021

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On July 21, 2021, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to second quarter 2021 consolidated earnings. A copy of the press release relating to such announcement, dated July 21, 2021, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated July 21, 2021* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:July 21, 2021By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer

wash-202104210000737468FALSE00007374682021-04-212021-04-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 21, 2021

WASHINGTON TRUST BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)

Rhode Island001-3299105-0404671 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

23 Broad Street Westerly,Rhode Island02891 (Address of principal executive offices)(Zip Code)

(401) 348-1200 (Registrant's telephone number, including area code)

N/A (Former name or address, if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 21, 2021, Washington Trust Bancorp, Inc. issued a press release in which it disclosed unaudited financial information related to first quarter 2021 consolidated earnings. A copy of the press release relating to such announcement, dated April 21, 2021, is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to General Instructions B.2 of Form 8-K, this information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits.

Exhibit No.Exhibit

99.1 Press release dated April 21, 2021* 104Cover Page Interactive Data File (embedded within the Inline XBRL document)

*Filed herewith

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

WASHINGTON TRUST BANCORP, INC.

Date:April 21, 2021By:/s/ Ronald S. Ohsberg Ronald S. Ohsberg Senior Executive Vice President, Chief Financial Officer and Treasurer