X0609 4 2026-10-22 0 0002101833 Forge Nano Holdings, Inc. NANO 0002141348 Zimmermann Curtis J. false C/O FORGE NANO HOLDINGS, INC. 12300 GRANT STREET, SUITE 110 THORNTON CO 80241 0 1 0 0 Chief Legal Counsel 0 Stock Option (right to buy) 0.56 2026-10-22 4 A 0 308608 A 2026-10-22 2032-01-11 Common Stock 308608 308608 D Stock Option (right to buy) 0.56 2026-10-22 4 A 0 26358 A 2026-10-22 2032-04-25 Common Stock 26358 26358 D Stock Option (right to buy) 1.03 2026-10-22 4 A 0 19946 A 2034-03-31 Common Stock 19946 19946 D Stock Option (right to buy) 1.33 2026-10-22 4 A 0 170603 A 2034-12-11 Common Stock 170603 170603 D Stock Option (right to buy) 2.94 2026-10-22 4 A 0 12823 A 2035-10-23 Common Stock 12823 12823 D Stock Option (right to buy) 2.94 2026-10-22 4 A 0 25361 A 2036-03-29 Common Stock 25361 25361 D Performance Stock Units 2026-10-22 4 A 0 321601 A 2031-10-22 Common Stock 321601 321601 D Performance Stock Units 2026-10-22 4 A 0 101176 A 2031-10-22 Common Stock 101176 101176 D Consists of stock options granted under the 2017 Equity Incentive Plan of Forge Nano, Inc. ("Forge Nano") that were converted into stock options exercisable for shares of the Issuer's common stock in connection with the Issuer's business combination (the "Business Combination") pursuant to the Agreement and Plan of Merger dated April 20, 2026, by and among Archimedes Tech SPAC Partners II Co., the Issuer (f/k/a ATII Holdings Inc.), ATII Merger Sub Inc., ATII Merger Sub II, LLC and Forge Nano (the "Merger Agreement"), and are exercisable following the closing of the Business Combination. 25% of these stock options vested on April 1, 2025, and the remaining 75% vested and will vest in 36 substantially equal monthly installments thereafter, subject to the Reporting Person's continued service with the Issuer. 25% of these stock options vested on December 12, 2025, and the remaining 75% vested and will vest in 36 substantially equal monthly installments thereafter, subject to the Reporting Person's continued service with the Issuer. 25% of these stock options vested on October 1, 2026, and the remaining 75% will vest in 36 substantially equal monthly installments thereafter, subject to the Reporting Person's continued service with the Issuer. 25% of these stock options will vest on March 31, 2027, and the remaining 75% will vest in 36 substantially equal monthly installments thereafter, subject to the Reporting Person's continued service with the Issuer. Represents performance stock units, each representing a right to receive one share of common stock of the Issuer, granted to holders of Forge Nano stock options in connection with the Business Combination. The performance stock units will vest as follows: (i) one third of the performance stock units will vest if the VWAP of the Common Stock equals or exceeds $15.00 per share over any 30 trading day period or the revenue of the Issuer for the preceding twelve months equals or exceeds $400,000,000, (ii) one third of the performance stock units will vest if the VWAP of the Common Stock equals or exceeds $20.00 per share over any 30 trading day period or the revenue of the Issuer for the preceding twelve months equals or exceeds $600,000,000 and (iii) one third of the performance stock units will vest if the VWAP of the Common Stock equals or exceeds $25.00 per share over any 30 trading day period or the revenue of the Issuer for the preceding twelve months equals or exceeds $800,000,000. Represents performance stock units, each representing a right to receive one share of common stock of the Issuer, granted to holders of Forge Nano stock options in connection with the Business Combination. The performance stock units will vest as follows, subject to the Reporting Person's continued service with the Issuer through each applicable vesting event: (i) one third of the performance stock units will vest if the VWAP of the Common Stock equals or exceeds $15.00 per share over any 30 trading day period or the revenue of the Issuer for the preceding twelve months equals or exceeds $400,000,000, (ii) one third of the performance stock units will vest if the VWAP of the Common Stock equals or exceeds $20.00 per share over any 30 trading day period or the revenue of the Issuer (Cont'd in FN9) (Cont'd from FN8) for the preceding twelve months equals or exceeds $600,000,000 and (iii) one third of the performance stock units will vest if the VWAP of the Common Stock equals or exceeds $25.00 per share over any 30 trading day period or the revenue of the Issuer for the preceding twelve months equals or exceeds $800,000,000. /s/ Michael Kleinberg, as Attorney-in-fact for Curtis Zimmermann 2026-10-26