Commission file number 1-10526 UNITED-GUARDIAN, INC. (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K For the transition period from _______________________ to ___________________________________________ Securities registered pursuant to Secti ...

EXHIBIT 99.1 United-Guardian Reports 2023 Financial Results HAUPPAUGE, N.Y., March 22, 2024 (GLOBE NEWSWIRE) -- United-Guardian, Inc. (NASDAQ:UG) reported that net income for FY 2023 remained relatively flat compared to FY 2022. Net sales for the year decreased by 14% from $12,698,503 in 2022 to $10,885,154 in 2023, generating net income of $2,581,370 ($0.56 per share) in 2023 compared to $2,569,512 ($0.56 per share) in 2022. Donna Vigilante, President of United-Guardian, stated, "While net income remained ...

(Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☐ TRANSITION REPORT PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ COMMISSION FILE NUMBER: 1-10526 UNITED-GUARDIAN, INC. (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Delaware 11- ...

U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ COMMISSION FILE NUMBER: 1-10526 UNITED-GUARDIAN, INC.. (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Delaware 11-1719 ...

U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ COMMISSION FILE NUMBER: 1-10526 UNITED-GUARDIAN, INC. (Exact Name of Registrant as Specified in Its Charter) Incorporation or Organization) Delaware 11-17197 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to ____________ Commission file number 1-10526 UNITED-GUARDIAN, INC. (Exact name of Registrant as specified in its charter) Delaware 11-1719724 (State ...

U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 . ☐ TRANSITION REPORT PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ COMMISSION FILE NUMBER: 1-10526 UNITED-GUARDIAN, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 11-1719724 (State or Other Jurisd ...

U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 ☐ TRANSITION REPORT PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ COMMISSION FILE NUMBER: 1-10526 UNITED-GUARDIAN, INC.. (Exact Name of Registrant as Specified in Its Charter) Delaware 11-1719724 (State or Other Jurisdiction ...

FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 ☐ TRANSITION REPORT PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 COMMISSION FILE NUMBER: 1-10526 UNITED-GUARDIAN, INC.. (Exact Name of Registrant as Specified in Its Charter) Delaware 11-1719724 (State or Other Jurisdictio ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to ____________ Commission file number 1-10526 UNITED-GUARDIAN, INC. (Exact name of Registrant as specified in its charter) (State or other jurisdictio ...