X0508 4 2023-08-24 0 0000883107 NANOPHASE TECHNOLOGIES Corp NANX 0001184478 JANKOWSKI JESS 1319 MARQUETTE DRIVE ROMEOVILLE IL 60446 1 1 0 0 President, CEO 0 Common Stock 1000 I Spouse's IRA Common Stock 59000 D Common Stock 2023-08-24 4 M 0 2500 0.52 A 61500 D Common Stock 2023-08-24 4 S 0 2500 1.005 D 59000 D Common Stock 2023-08-25 4 M 0 1050 0.52 A 60050 D Common Stock 2023-08-25 4 S 0 1050 1.015 D 59000 D Common Stock 2023-08-28 4 M 0 500 1.00 A 59500 D Common Stock 2023-08-28 4 S 0 500 1.00 D 59000 D Common Stock (right to purchase) 0.52 2023-08-24 4 M 0 2500 0.52 D 2015-02-13 2024-02-13 Common Stock 90000 87500 D Common Stock (right to purchase) 0.52 2023-08-25 4 M 0 1050 0.52 D 2015-02-13 2024-02-13 Common Stock 87500 86450 D Common Stock (right to purchase) 0.52 2023-08-28 4 M 0 500 0.52 D 2015-02-13 2024-02-13 Common Stock 86450 85950 D Common Stock (right to purchase) 0.44 2016-02-18 2025-02-18 Common Stock 81000 81000 D Common Stock (right to purchase) 0.42 2017-02-23 2026-02-23 Common Stock 69000 69000 D Common Stock (right to purchase) 0.68 2018-02-21 2027-02-21 Common Stock 81000 81000 D Common Stock (right to purchase) 0.82 2019-05-23 2028-05-23 Common Stock 90000 90000 D Common Stock (right to purchase) 0.51 2020-05-22 2029-05-22 Common Stock 16500 16500 D Common Stock (right to purchase) 0.45 2021-06-18 2027-06-18 Common Stock 90000 90000 D Common Stock (right to purchase) 4.17 2022-12-28 2028-12-28 Common Stock 90000 90000 D Common Stock (right to purchase) 1.165 2023-12-20 2029-12-20 Common Stock 72000 72000 D These stock options are set to expire on 02/13/2024. Mr. Jankowski converted and sold these shares through a 10b5-1 Plan that has been established with an independent broker to avoid the loss of these stock option rights. His goal is to have this broker sell shares from this grant, under fixed guidelines, in a regular and measured manner designed to avoid both forfeiture of shares due to expiration, and impacting the stock price due to excessive trading volume. His Plan was approved in advance by the Compensation & Governance Committee of the Nanophase Board of Directors. If not sold through a 10b5-1 Plan, Nanophase trading blackout periods run from the 25th of the last day of any given quarter until 3 days after earnings are released. In example, for options expiring during the 1st quarter of any given year, trading would be prohibited from December 25th of the prior year, through the release of annual earnings plus 3 business days. Typically, this would reopen trading in early-to-mid March, through March 24th. The next blackout period would begin on March 25th, etc. Given the quantity of shares involved relative to daily trading volume, the limited amount of open trading days available due to trading blackout periods, and looming stock option expirations, Mr. Jankowski established a 10b5-1 Plan to avoid the loss of these rights in a way intended to minimize the impact on Nanophase shareholders. These stock options are set to expire on 02/13/2024. Mr. Jankowski established a 10b5-1 Plan with an independent broker with a goal of having his broker sell shares from this grant, under fixed guidelines, in a regular and measured manner designed to avoid both forfeiture of shares due to expiration, and impacting the stock price due to excessive trading volume. His Plan was approved in advance by the Compensation & Governance Committee of the Nanophase Board of Directors. Subject to certain restrictions, beginning on this date, options vest in three equal installments. Subject to certain restrictions, beginning on this date, the options vest in three equal annual installments. Subject to certain restrictions, beginning on this date, options vest in three equal annual installments. Mr. Jankowski converted and sold these shares through a 10b5-1 Plan that has been established with an independent broker to avoid the loss of these stock option rights. His goal is to have this broker sell shares from this grant, under fixed guidelines, in a regular and measured manner designed to avoid both forfeiture of shares due to expiration, and impacting the stock price due to excessive trading volume. His Plan was approved in advance by the Compensation & Governance Committee of the Nanophase Board of Directors. Given the quantity of shares involved relative to daily trading volume, the limited amount of open trading days available due to trading blackout periods, and looming stock option expirations, Mr. Jankowski established a 10b5-1 Plan to avoid the loss of these rights in a way intended to minimize the impact on Nanophase shareholders. Jess A. Jankowski 2023-08-28