X0609 4 2026-04-15 0 0000918541 NN INC NNBR 0001858308 Barrett John Frederick false C/O CORRE PARTNERS MANAGEMENT, LLC 12 EAST 49TH STREET, 40TH FLOOR NEW YORK NY 10017 0 0 1 0 0 Common Stock, par value $0.01 per share 2026-04-15 4 S 0 315436 2.0563 D 5890195 I Footnote Common Stock, par value $0.01 per share 2026-04-16 4 S 0 40030 2.0411 D 5850165 I Footnote Common Stock, par value $0.01 per share 2026-04-17 4 S 0 348161 2.2939 D 5502004 I Footnote Common Stock, par value $0.01 per share 2026-04-20 4 S 0 79757 2.2423 D 5422247 I Footnote Common Stock, par value $0.01 per share 2026-04-21 4 S 0 55483 2.2096 D 5366764 I Footnote Common Stock, par value $0.01 per share 2026-04-22 4 S 0 94380 2.2978 D 5272384 I Footnote Common Stock, par value $0.01 per share 2026-04-23 4 S 0 555305 2.6904 D 4717079 I Footnote Common Stock, par value $0.01 per share 2026-04-24 4 S 0 12199 2.5138 D 4704880 I Footnote Common Stock, par value $0.01 per share 2026-04-27 4 S 0 136165 2.6295 D 4568715 I Footnote All trades in this Form 4 were previously reported on Form 4 filings made by Corre Partners Management, LLC ("Corre") on April 17, 2026, April 22, 2026 and April 27, 2026. The Reporting Person is filing this Form 4 as a result of the Reporting Person subsequently receiving CIK codes. The reported securities are directly owned by advisory clients of Corre. The reported securities may be deemed beneficially owned by the Reporting Person, the managing member of Corre. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and this report shall not be deemed to be an admission that the Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.00 to $2.17. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.015 to $2.105. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.04 to $2.445. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.20 to $2.3066. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.17 to $2.29. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.2050 to $2.38. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.49 to $2.88. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.50 to $2.54. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $2.52 to $2.7099. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ John Barrett 2026-04-29