SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* TRUCHARD JAMES J (Last) (First) (Middle) C/O NATIONAL INSTRUMENTS CORP 11500 N. MOPAC EXPRESSWAY, BLDG. C (Street) AUSTIN TX 78759-3504 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol NATIONAL INSTRUMENTS CORP /DE/ [ NATI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner X Officer (give title below) Other (specify below) President
	3. Date of Earliest Transaction (Month/Day/Year) 09/02/2015
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

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	09/02/2015		J(1)		300,973	D	$0	9,063,124	D
Common Stock	09/02/2015		J(1)		300,973	A	$0	9,364,097	D
Common Stock	09/02/2015		J(1)		300,973	D	$0	0	I	Held by the Trust.
Common Stock	09/02/2015		J(1)		300,973	A	$0	300,973(2)	I	Held by the Trust.
Common Stock								3,281,250	I	Held by Truchard NATI Partners, Ltd., Dr. Truchard is the general partner.
Common Stock								300,972	I	Held by James J. Truchard TTEE James J. Truchard Descendants Trust II, Dr. Truchard is the trustee.
Common Stock								77,243	I	Held by Truchard Foundation, Dr. Truchard is the president.

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. For estate planning purposes, on September 2, 2015 (the "Transfer Date"), Dr. James J. Truchard ("Dr. Truchard") transferred, for no consideration, 300,973 shares of the issuer's common stock to the James J. Truchard TR Truchard Descendants Trusts UA 04-JUN-93 (the "Trust"). Simultaneously on the Transfer Date, the Trust transferred, for no consideration, 300,973 shares of the issuer's common stock with a different cost basis for tax purposes to Dr. Truchard.

2. On February 22, 2011, the common stock of National Instruments Corporation split 3-for-2, resulting in the Trust's ownership of 200,648 additional shares of common stock.

Remarks:

	David G. Hugley as attorney-in-fact for James J. Truchard	09/02/2015
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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