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 ...

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, 2021 . ☐ 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, 2021 ☐ TRANSITION REPORT PURSUANT TO 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 UNITED-GUARDIAN, INC. (Exact Name of Registrant as Specified in Its Charter) Incorporation or Organization) Delaware 11-1719724 (State or Other Jurisdiction of (I.R.S. Employer Identification No.) 230 Marcus Bo ...

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, 2021 ☐ 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 Jurisdictio ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 1O-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, 2020 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 ...

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, 2020 . ☐ 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) Delawar ...

U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) Commission File Number: 1-10526 UNITED-GUARDIAN, INC.. (Exact name of registrant as specified in its charter) Delaware 11-1719724 incorporation or organization) (State or other jurisdiction of (I.R.S. Employer Identification No.) 230 Marcus Boulevard, Hauppauge, New York 11788 (Address of principal executive offices) (631) 273-0900 (Registrant's telephone number, including area code) N/A (Former name, former address and form ...