Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
GUND GORDON
  2. Issuer Name and Ticker or Trading Symbol
ALIGN TECHNOLOGY INC [ALGN]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
See Remark Section
(Last)
(First)
(Middle)
14 NASSAU STREET
3. Date of Earliest Transaction (Month/Day/Year)
05/31/2006
(Street)

PRINCETON, NJ 08542
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 05/31/2006   P   100,000 A $ 7.41 700,000 I See Footnote (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
GUND GORDON
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
Gund Grant
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
Gund Llura L
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
Gund G Zachary
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
Watson Richard
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
Dent Rebecca H
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
Barrows Gail
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
GUND GEORGE III
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section
Gund CLAT Investments, LLC
14 NASSAU STREET
PRINCETON, NJ 08542
      See Remark Section

Signatures

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact for Gordon Gund - Manager   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

 Theodore W. Baker as Attorney in Fact   06/01/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These securities are owned by the G. Zachary Gund Descendants Trust and by G. Zachary Gund and Rebecca H. Dent, as Trustees.
 
Remarks:
The Reporting Persons include Llura L. Gund, Grant Gund, G. Zachary Gund, Gordon Gund, Richard L. Watson, Rebecca H. Dent, George Gund III, Gail Barrows and Gund CLAT Investments, LLC. The Reporting Persons, in the aggregate, beneficially own 7,267,450 shares of Common Stock of the Issuer or 11.55% of the outstanding shares of the Issuer's Common Stock.  Neither the fact of this filing nor anything contained herein shall be deemed an admission by any of the Reporting Persons that a group exists within the meaning of the Securities Exchange Act of 1934, as amended.

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