FORGE NANO, INC.

Exhibit 4.9 THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS SET FORTH IN SECTIONS 6.3 AND 6.4 BELOW, MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR IN FORM AND SUBSTANCE SATISFACTORY TO THE COMPANY, SUCH OFFER, SALE, PLEDGE OR OTHER TRANSFER IS EXEMPT FROM SUCH REGISTRATION. WARRANT TO PURCHASE CO…

S-4/A · 2026-09-02 · 0001104659-26-104734

Exhibit 99.1 ARCHIMEDES TECH SPAC PARTNERS II CO. 2093 Philadelphia Pike #1968 Claymont, DE 19703 EXTRAORDINARY GENERAL MEETING OF SHAREHOLDERS THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF ARCHIMEDES TECH SPAC PARTNERS II CO. The undersigned hereby appoints Long Long as proxy (the “Proxy”), with full power to act to appoint a substitute, and hereby authorizes the Proxy to represent and to vote, as designated on the reverse side, all ordinary shares (“ATII Ordinary Shares…

S-4/A · 2026-09-02 · 0001104659-26-104734

EX-4.3 2 none-20260724xex4d3.htm EX-4.3 Exhibit 4.3 WARRANT AGREEMENT This WARRANT AGREEMENT (this “Agreement”) is made as of [ ], 2026 between ATII Holdings Inc., a Delaware corporation (the “Company”), and Ascent Funds International Management LLC (the “Holder”). WHEREAS, the Holder previously had the option or other right to acquire securities of Forge Nano, Inc., a Delaware corporation (“Old Forge Nano”), and/or its affiliates (the “Options”), including those specified in the Amended …

S-4/A · 2026-07-24 · 0001104659-26-086700

EX-4.4 3 none-20260724xex4d4.htm EX-4.4 Exhibit 4.4 THIS WARRANT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE “ACT”), AS AMENDED, OR ANY STATE SECURITIES LAWS. NO SALE OR DISPOSITION MAY BE EFFECTED WITHOUT (i) EFFECTIVE REGISTRATION STATEMENTS RELATED THERETO, (ii) AN OPINION OF COUNSEL FOR THE HOLDER, REASONABLY SATISFACTORY TO THE COMPANY, THAT SUCH REGISTRATIONS ARE NOT REQUIRED, (iii) RECEIPT OF NO-ACTION LETTERS FROM THE APPROPRIATE GOVERNMENTAL AUTHORITIES, OR (iv) O…

S-4/A · 2026-07-24 · 0001104659-26-086700

EX-4.5 4 none-20260724xex4d5.htm EX-4.5 Exhibit 4.5 THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS SET FORTH IN SECTIONS 6.3 AND 6.4 BELOW, MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR, IN THE OPINION OF LEGAL COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE COMPANY, SUCH OFFER, SALE, PLEDG…

S-4/A · 2026-07-24 · 0001104659-26-086700

EX-4.6 5 none-20260724xex4d6.htm EX-4.6 Exhibit 4.6 THE SECURITIES REPRESENTED BY THIS WARRANT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF. NO SUCH SALE OR DISTRIBUTION MAY BE EFFECTED EXCEPT IN COMPLIANCE WITH APPLICABLE SECURITIES LAWS. Date of Issuance: April [ ], 2023 FORGE NANO, INC. STOCK PURCHASE WARRANT This certi…

S-4/A · 2026-07-24 · 0001104659-26-086700