Stocks
NTIC NORTHERN TECHNOLOGIES INTERNATIONAL CORP

NTIC

NORTHERN TECHNOLOGIES INTERNATIONAL CORP

Company with tickers: NTIC

CIK

875582

Shares Outstanding

9,492,001

Price Holdings Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trading Congress Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2025-09-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Award	32,559	—	—	32,559
2025-09-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Other	168,256	—	—	168,256
2025-09-01	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Award	44,051	—	—	44,051
2025-09-01	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Other	105,284	—	—	105,284
2025-09-01	von Falkenhausen Konstantin	Director	Other	18,219	—	—	18,219
2025-09-01	von Falkenhausen Konstantin	Director	Award	16,287	—	—	16,287
2025-09-01	Lee Sunggyu	Director	Award	16,287	—	—	16,287
2025-09-01	Lee Sunggyu	Director	Other	3,319	—	—	3,319
2025-09-01	Narayan Ramani	Director	Award	16,287	—	—	16,287
2025-09-01	Narayan Ramani	Director	Other	106,763	—	—	106,763
2025-09-01	NIGON RICHARD	Director	Award	8,086	—	—	47,148
2025-09-01	Kemp Sarah E.	Director	Award	6,739	—	—	16,270
2025-09-01	Pinho Cristina Lucia Duarte	Director	Award	6,739	—	—	10,510
2025-09-01	Calderon Nancy E.	Director	Award	6,739	—	—	14,741
2025-08-13	Calderon Nancy E.	Director	Other	2	$7.72	$15	7,999
2025-07-24	NIGON RICHARD	Director	Convert	12,000	$7.43	$89,160	49,935
2025-07-24	NIGON RICHARD	Director	Convert	12,000	—	—	0
2025-07-24	NIGON RICHARD	Director	Tax	10,873	$8.20	$89,159	39,062
2025-05-14	Calderon Nancy E.	Director	Other	2	$7.35	$15	7,993
2025-05-06	von Falkenhausen Konstantin	Director	Buy	1,100	$7.23	$7,953	18,219
2025-04-25	Calderon Nancy E.	Director	Buy	1,000	$7.45	$7,452	7,954
2025-02-12	Calderon Nancy E.	Director	Other	6	$11.26	$68	7,977
2024-11-13	Calderon Nancy E.	Director	Other	5	$13.29	$66	7,959
2024-09-01	von Falkenhausen Konstantin	Director	Other	17,119	—	—	17,119
2024-09-01	von Falkenhausen Konstantin	Director	Award	9,843	—	—	9,843
2024-09-01	Pinho Cristina Lucia Duarte	Director	Award	3,771	—	—	3,771
2024-09-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Award	33,156	—	—	33,156
2024-09-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Other	168,176	—	—	168,176
2024-09-01	Calderon Nancy E.	Director	Award	3,771	—	—	6,954
2024-09-01	NIGON RICHARD	Director	Other	37,935	—	—	37,935
2024-09-01	NIGON RICHARD	Director	Award	11,811	—	—	11,811
2024-09-01	Lee Sunggyu	Director	Other	3,319	—	—	3,319
2024-09-01	Lee Sunggyu	Director	Award	9,843	—	—	9,843
2024-09-01	Narayan Ramani	Director	Other	106,763	—	—	106,763
2024-09-01	Narayan Ramani	Director	Award	9,843	—	—	9,843
2024-09-01	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Other	105,284	—	—	105,284
2024-09-01	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Award	44,858	—	—	44,858
2024-09-01	Kemp Sarah E.	Director	Award	3,771	—	—	9,531
2024-08-26	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Convert	10,488	$10.05	$105,404	112,994
2024-08-26	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Other	1,203,334	—	—	1,203,334
2024-08-26	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Tax	7,710	$13.67	$105,396	105,284
2024-08-26	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Convert	10,488	—	—	0
2024-08-14	Calderon Nancy E.	Director	Other	5	$11.99	$60	3,172
2024-08-01	NIGON RICHARD	Director	Convert	12,000	$10.05	$120,600	45,600
2024-08-01	NIGON RICHARD	Director	Tax	7,665	$13.11	$100,488	37,935
2024-08-01	NIGON RICHARD	Director	Convert	12,000	—	—	0
2024-07-31	von Falkenhausen Konstantin	Director	Convert	8,000	—	—	0
2024-07-31	von Falkenhausen Konstantin	Director	Convert	8,000	$10.05	$80,400	23,200
2024-07-31	von Falkenhausen Konstantin	Director	Tax	6,081	$13.22	$80,391	17,119
2024-07-15	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Convert	7,752	$10.05	$77,908	168,149
2024-07-15	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Convert	7,752	—	—	0
2024-05-15	Calderon Nancy E.	Director	Other	3	$18.04	$54	3,153
2024-04-23	Kemp Sarah E.	Director	Buy	1,275	$15.70	$20,018	5,760
2024-02-14	Calderon Nancy E.	Director	Other	5	$13.63	$68	3,138
2023-11-16	Calderon Nancy E.	Director	Other	5	$12.01	$60	3,122
2023-09-01	Calderon Nancy E.	Director	Award	9,921	—	—	9,921
2023-09-01	NIGON RICHARD	Director	Award	11,905	—	—	11,905
2023-09-01	NIGON RICHARD	Director	Other	33,600	—	—	33,600
2023-09-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Other	160,369	—	—	160,369
2023-09-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Award	33,543	—	—	33,543
2023-09-01	Lee Sunggyu	Director	Other	3,319	—	—	3,319
2023-09-01	Lee Sunggyu	Director	Award	9,921	—	—	9,921
2023-09-01	Kemp Sarah E.	Director	Award	9,921	—	—	9,921
2023-09-01	Kemp Sarah E.	Director	Other	4,485	—	—	4,485
2023-09-01	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Award	45,381	—	—	45,381
2023-09-01	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Other	102,506	—	—	102,506
2023-09-01	von Falkenhausen Konstantin	Director	Other	15,200	—	—	15,200
2023-09-01	von Falkenhausen Konstantin	Director	Award	9,921	—	—	9,921
2023-09-01	Narayan Ramani	Director	Award	9,921	—	—	9,921
2023-09-01	Narayan Ramani	Director	Other	106,763	—	—	106,763
2023-09-01	Pinho Cristina Lucia Duarte	Director	Other	0	—	—	0
2023-09-01	Pinho Cristina Lucia Duarte	Director	Award	9,921	—	—	9,921
2023-08-28	von Falkenhausen Konstantin	Director	Convert	8,000	—	—	8,000
2023-08-28	von Falkenhausen Konstantin	Director	Convert	8,000	$7.35	$58,800	15,200
2023-08-17	Calderon Nancy E.	Director	Other	13	$13.07	$170	3,116
2023-08-17	Lee Sunggyu	Director	Convert	8,000	$7.35	$58,800	8,000
2023-08-17	Lee Sunggyu	Director	Convert	8,000	—	—	0
2023-08-17	Lee Sunggyu	Director	Tax	4,681	$12.56	$58,793	3,319
2023-08-14	Calderon Nancy E.	Director	Buy	500	$13.17	$6,585	3,061
2023-08-08	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Convert	11,610	$7.35	$85,334	108,893
2023-08-08	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Tax	6,387	$13.36	$85,330	102,506
2023-08-08	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Convert	11,610	—	—	0
2023-08-08	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Other	1,203,334	—	—	1,203,334
2023-07-27	NIGON RICHARD	Director	Sell	1,847	$12.17	$22,478	33,600
2023-07-26	NIGON RICHARD	Director	Convert	12,000	$7.35	$88,200	42,600
2023-07-26	NIGON RICHARD	Director	Convert	12,000	—	—	0
2023-07-26	NIGON RICHARD	Director	Tax	7,153	$12.33	$88,196	35,447
2023-07-11	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Convert	8,582	—	—	0
2023-07-11	WOLSFELD MATTHEW C	CFO and Corporate Secretary	Convert	8,582	$7.35	$63,078	160,338
2023-05-18	Calderon Nancy E.	Director	Other	15	$11.56	$173	3,102
2023-04-18	Kemp Sarah E.	Director	Buy	2,473	$12.13	$29,996	4,485
2023-02-21	Calderon Nancy E.	Director	Other	13	$13.17	$171	3,086
2023-01-30	Calderon Nancy E.	Director	Buy	500	$12.92	$6,459	2,561
2023-01-20	Pinho Cristina Lucia Duarte	Director	Other	0	—	—	0
2023-01-20	Pinho Cristina Lucia Duarte	Director	Award	5,511	—	—	5,511
2023-01-20	Pinho Cristina Lucia Duarte	Director	Other	0	—	—	0
2022-11-16	Calderon Nancy E.	Director	Other	11	$12.96	$143	3,072
2022-10-14	von Falkenhausen Konstantin	Director	Convert	6,000	—	—	0
2022-10-14	von Falkenhausen Konstantin	Director	Convert	6,000	$5.13	$30,750	7,200
2022-10-04	LYNCH G PATRICK	Director, President and CEO, 10% Owner	Tax	13,645	$13.83	$188,710	97,283