X0202 SCHEDULE 13G/A 0001291206 XXXXXXXX LIVE 1 Common Stock, $0.0001 par value per share 06/30/2026 0001097149 Align Technology, Inc. 016255101 410 North Scottsdale Road Suite 1300 Tempe AZ 85288 Rule 13d-1(c) G. Zachary Gund, as trustee, sole manager or co-manager b X1 1175000.00 700147.00 1175000.00 700147.00 1875147.00 N 2.6 IN G. Zachary Gund as trustee for the Gordon Gund - G. Zachary Gund #2 Trust, the Z Coppermine Trust, the Zachary and Lindsey Gund Foundation, the Gordon Gund - G. Zachary Gund GST Article III Trust, the Gordon Gund - G. Zachary Gund GST Article III-A Trust, the G. Zachary Gund Descendants' Trust, the Georgia Swift Gund Gift Trust and the Grant Gund 2017 Remainder Trust, as sole manager of GCG Investments LLC and as co-manager of Gund CLAT Investments LLC Grant Gund, as trustee, sole manager or co-manager b X1 640065.00 795916.00 640065.00 795916.00 1435981.00 N 2.0 IN Grant Gund, as trustee for the Gordon Gund - Grant Gund #2 Trust, the Grant Gund 1999 Trust, the Gordon Gund - Grant Gund GST Article III Trust, the Gordon Gund - Grant Gund GST Article III-A Trust, the Llura Blair Gund Gift Trust, the Grant Owen Gund Gift Trust, the Kelsey Laidlaw Gund Gift Trust and the 2011 Grant Gund Descendants' Trust, as sole manager of OLK Brookfield LLC and as co-manager of Gund CLAT Investments LLC Alison I. Glover, as trustee b X1 0.00 103269.00 0.00 103269.00 103269.00 N 0.1 IN Alison I. Glover, as trustee for the Llura Blair Gund Gift Trust, the Grant Owen Gund Gift Trust, the Kelsey Laidlaw Gund Gift Trust and the Georgia Swift Gund Gift Trust Lindsey Gund, as trustee for the Zach and Lindsey Gund Foundation b X1 0.00 1500.00 0.00 1500.00 1500.00 N 0.0 IN Dionis Trust b OH 0.00 348730.00 0.00 348730.00 348730.00 N 0.5 OO Marital Trust for Gordon Gund b OH 0.00 574550.00 0.00 574550.00 574550.00 N 0.8 OO Gordon & Llura Gund Foundation b NJ 0.00 274220.00 0.00 274220.00 274220.00 N 0.4 OO Align Technology, Inc. 410 North Scottsdale Road, Suite 1300, Tempe, Arizona 85288 This Amendment No. 1 ("Amendment No. 1") amends and supplements the Schedule 13G as originally filed on January 27, 2025 (as so amended, the "Schedule 13G"), by and on behalf of: G. Zachary Gund, as trustee for the Gordon Gund - G. Zachary Gund #2 Trust, the Z Coppermine Trust, the Zachary and Lindsey Gund Foundation, the Gordon Gund - G. Zachary Gund GST Article III Trust, the Gordon Gund - G. Zachary Gund GST Article III-A Trust, the G. Zachary Gund Descendants' Trust, the Georgia Swift Gund Gift Trust and the Grant Gund 2017 Remainder Trust, as sole manager of GCG Investments LLC and as co-manager of Gund CLAT Investments LLC Grant Gund, as trustee for the Gordon Gund - Grant Gund #2 Trust, the Grant Gund 1999 Trust, the Gordon Gund - Grant Gund GST Article III Trust, the Gordon Gund - Grant Gund GST Article III-A Trust, the Llura Blair Gund Gift Trust, the Grant Owen Gund Gift Trust, the Kelsey Laidlaw Gund Gift Trust and the 2011 Grant Gund Descendants' Trust, as sole manager of OLK Brookfield LLC and as co-manager of Gund CLAT Investments LLC Alison I. Glover, as trustee for the Llura Blair Gund Gift Trust, the Grant Owen Gund Gift Trust, the Kelsey Laidlaw Gund Gift Trust and the Georgia Swift Gund Gift Trust Lindsey Gund, as trustee for the Zachary and Lindsey Gund Foundation Dionis Trust Marital Trust for Gordon Gund Gordon & Llura Gund Foundation (each, a "Reporting Person" and together, the "Reporting Persons"). The Reporting Persons, in the aggregate, beneficially own 3,812,981 shares of Common Stock or 5.4% of the outstanding Common Stock of the Issuer based on 71,039,852 shares outstanding as of July 31, 2026 as reported in the Quarterly Report on Form 10-Q of the Issuer for the period ended June 30, 2026. Neither the fact of this filing nor anything contained herein shall be deemed to be an admission by any of the Reporting Persons that a group exists within the meaning of the Exchange Act. The business address for each of the Reporting Persons is: 14 Nassau Street Princeton, NJ 08542 Except as noted below, all Reporting Persons are citizens of the United States. The Dionis Trust and Marital Trust for Gordon Gund are formed under the laws of the State of Ohio. The Gordon & Llura Gund Foundation is formed under the laws of New Jersey. N The Reporting Persons may be deemed to have beneficial ownership of 3,812,981 shares of Common Stock of the Issuer. G. Zachary Gund may be deemed to have beneficial ownership in the aggregate of 1,875,147 shares of Common Stock of the Issuer.* Grant Gund may be deemed to have beneficial ownership in the aggregate of 1,435,981 shares of Common Stock of the Issuer.** Alison I. Glover may be deemed to have beneficial ownership in the aggregate of 103,269 shares of Common Stock of the Issuer.*** Lindsey Gund may be deemed to have beneficial ownership in the aggregate of 1,500 shares of Common Stock of the Issuer.**** The Dionis Trust may be deemed to have beneficial ownership of 348,730 shares of Common Stock of the Issuer. The Marital Trust for Gordon Gund may be deemed to have beneficial ownership of 574,550 shares of Common Stock of the Issuer. The Gordon & Llura Gund Foundation may be deemed to have beneficial ownership of 274,220 shares of Common Stock of the Issuer. *Mr. G. Zachary Gund's beneficial ownership is by virtue of his position as trustee, sole manager or co-manager of the following entities: Gordon Gund - G. Zachary Gund #2 Trust (Mr. G. Zachary Gund serves as investment trustee): 328,887 shares of Common Stock Z Coppermine Trust (Mr. G. Zachary Gund serves as sole trustee): 118,069 shares of Common Stock The Zachary and Lindsey Gund Foundation (Mr. G. Zachary Gund serves as co-trustee with Lindsey Gund): 1,500 shares of Common Stock GCG Investments LLC (Mr. G. Zachary Gund serves as sole manager): 14,875 shares of Common Stock Gordon Gund - G. Zachary Gund GST Article III Trust (Mr. G. Zachary Gund serves as investment trustee): 322,998 shares of Common Stock Grant Gund 2017 Remainder Trust (Mr. G. Zachary Gund serves as trustee): 11,450 shares of Common Stock Gordon Gund - G. Zachary Gund GST Article III-A Trust (Mr. G. Zachary Gund serves as investment trustee): 107,000 shares of Common Stock G. Zachary Gund Descendants' Trust (Mr. G. Zachary Gund serves as investment trustee): 271,721 shares of Common Stock Georgia Swift Gund Gift Trust (Mr. G. Zachary Gund serves as co-trustee with Alison I. Glover): 3,000 shares of Common Stock Gund CLAT Investments LLC (Mr. G. Zachary Gund serves as co-manager with Grant Gund): 695,647 shares of Common Stock ** Mr. Grant Gund's beneficial ownership is by virtue of his position as trustee, sole manager or co-manager of the following entities: Gordon Gund - Grant Gund #2 Trust (Mr. Grant Gund serves as investment trustee): 270,379 shares of Common Stock Grant Gund 1999 Trust (Mr. Grant Gund serves as sole trustee): 77,240 shares of Common Stock OLK Brookfield LLC (Mr. Grant Gund serves as sole manager): 8,532 shares of Common Stock Gordon Gund - Grant Gund GST Article III Trust (Mr. Grant Gund serves as investment trustee): 168,614 shares of Common Stock Gordon Gund - Grant Gund GST Article III-A Trust (Mr. Grant Gund serves as investment trustee): 107,000 shares of Common Stock 2011 Grant Gund Descendants' Trust (Mr. Grant Gund serves as investment trustee): 8,300 shares of Common Stock Llura Blair Gund Gift Trust (Mr. Grant Gund serves as co-trustee with Alison I. Glover): 14,949 shares of Common Stock Grant Owen Gund Gift Trust (Mr. Grant Gund serves as co-trustee with Alison I. Glover): 14,650 shares of Common Stock Kelsey Laidlaw Gund Gift Trust (Mr. Grant Gund serves as co-trustee with Alison I. Glover): 70,670 shares of Common Stock Gund CLAT Investments LLC (Mr. Grant Gund serves as co-manager with G. Zachary Gund): 695,647 shares of Common Stock ***Ms. Glover's beneficial ownership is by virtue of her position as co-trustee of the following trusts: Llura Blair Gund Gift Trust (Ms. Glover serves as co-trustee with Grant Gund): 14,949 shares of Common Stock Grant Owen Gund Gift Trust (Ms. Glover serves as co-trustee with Grant Gund): 14,650 shares of Common Stock Kelsey Laidlaw Gund Gift Trust (Ms. Glover serves as co-trustee with Grant Gund): 70,670 shares of Common Stock Georgia Swift Gund Gift Trust (Ms. Glover serves as co-trustee with G. Zachary Gund): 3,000 shares of Common Stock ****Ms. Gund's beneficial ownership is by virtue of her position as co-trustee of the Zachary and Lindsey Gund Foundation (Ms. Gund serves as co-trustee with G. Zachary Gund): 1,500 shares of Common Stock Pursuant to the Exchange Act and regulations thereunder, the Reporting Persons may be deemed as a group to have beneficial ownership of 5.4%. G. Zachary Gund may be deemed to have beneficial ownership in the aggregate of 2.6%.* Grant Gund may be deemed to have beneficial ownership in the aggregate of 2.0%.** Alison I. Glover may be deemed to have beneficial ownership in the aggregate of 0.1%.*** Lindsey Gund may be deemed to have beneficial ownership in the aggregate of 0.0%.**** The Dionis Trust may be deemed to have beneficial ownership of 0.5%. The Marital Trust for Gordon Gund may be deemed to have beneficial ownership of 0.8%. The Gordon & Llura Gund Foundation may be deemed to have beneficial ownership of 0.4% G. Zachary Gund: an aggregate of 1,175,000 shares of Common Stock by virtue of his position as the sole manager or trustee or investment trustee of certain entities.* Grant Gund: an aggregate of 640,065 shares of Common Stock by virtue of his position as the sole manager or trustee or investment trustee of certain entities.** Alison I. Glover: 0 shares of Common Stock. Lindsey Gund: 0 shares of Common Stock. Dionis Trust: 0 shares of Common Stock. Marital Trust for Gordon Gund: 0 shares of Common Stock. Gordon & Llura Gund Foundation: 0 shares of Common Stock. G. Zachary Gund: 700,147 shares of Common Stock by virtue of his position as co-trustee or co-manager of certain entities.* Grant Gund: 795,916 shares of Common Stock by virtue of his position as co-trustee or co-manager of certain entities.** Alison I. Glover: 103,269 shares of Common Stock by virtue of her position as co-trustee for certain trusts.*** Lindsey Gund: 1,500 shares of Common Stock by virtue of her position as co-trustee for certain trusts.**** Dionis Trust: 348,730 shares of Common Stock. Marital Trust for Gordon Gund: 574,550 shares of Common Stock. Gordon & Llura Gund Foundation: 274,220 shares of Common Stock. G. Zachary Gund: 1,175,000 shares of Common Stock by virtue of his position as the sole manager or trustee or investment trustee of certain entities.* Grant Gund: 640,065 shares of Common Stock by virtue of his position as sole manager or trustee or investment trustee of certain entities.** Alison I. Glover: 0 shares of Common Stock. Lindsey Gund: 0 shares of Common Stock. Dionis Trust: 0 shares of Common Stock. Marital Trust for Gordon Gund: 0 shares of Common Stock. Gordon & Llura Gund Foundation: 0 shares of Common Stock. G. Zachary Gund: 700,147 shares of Common Stock by virtue of his position as co-trustee or co-manager of certain entities.* Grant Gund: 795,916 shares of Common Stock by virtue of his position as co-trustee or co-manager of certain entities.** Alison I. Glover: 103,269 shares of Common Stock by virtue of her position as co-trustee for certain trusts.*** Lindsey Gund: 1,500 shares of Common Stock by virtue of her position as co-trustee for certain trusts.**** Dionis Trust: 348,730 shares of Common Stock. Marital Trust for Gordon Gund: 574,550 shares of Common Stock. Gordon & Llura Gund Foundation: 274,220 shares of Common Stock. Y N Other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, these securities. Y N See Exhibit A. Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. G. Zachary Gund, as trustee, sole manager or co-manager /s/ Catherine Bird 08/12/2026 Grant Gund, as trustee, sole manager or co-manager /s/ Catherine Bird 08/12/2026 Alison I. Glover, as trustee /s/ Catherine Bird 08/12/2026 Lindsey Gund, as trustee for the Zach and Lindsey Gund Foundation /s/ Catherine Bird 08/12/2026 Dionis Trust /s/ Catherine Bird 08/12/2026 Marital Trust for Gordon Gund /s/ Catherine Bird 08/12/2026 Gordon & Llura Gund Foundation /s/ Catherine Bird 08/12/2026 *The Power of Attorney authorizing Catherine Bird to act on behalf of the Reporting Persons is attached hereto as Exhibit B.