Statement of Changes in Beneficial Ownership (4)

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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * Davis Jordan	2. Issuer Name and Ticker or Trading Symbol TACTILE SYSTEMS TECHNOLOGY INC [ TCMD ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __ X __ Director                      _____ 10% Owner _____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle) 1331 TYLER STREET NE, SUITE 200	3. Date of Earliest Transaction (MM/DD/YYYY) 12/13/2017
(Street) MINNEAPOLIS, MN 55413 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	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. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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	12/13/2017		S		3095	D	$29.5224   (1)	100160	I	By Radius Venture Partners III (Ohio), LP   (2)
Common Stock	12/13/2017		S		24645	D	$29.5224   (1)	797502	I	By Radius Venture Partners III QP, LP   (3)
Common Stock	12/13/2017		S		2260	D	$29.5224   (1)	73136	I	By Radius Venture Partners III LP   (4)
Common Stock	12/14/2017		S		1032	D	$29.5321   (5)	99128	I	By Radius Venture Partners III (Ohio), LP   (2)
Common Stock	12/14/2017		S		8215	D	$29.5321   (5)	789287	I	By Radius Venture Partners III QP, LP   (3)
Common Stock	12/14/2017		S		753	D	$29.5321   (5)	72383	I	By Radius Venture Partners III LP   (4)
Common Stock								5006	D

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		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 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

Explanation of Responses:
(1)	Reflects the weighted average price of 30,000 shares of common stock of Tactile Systems Technology, Inc. sold by the reporting person in multiple transactions on December 13, 2017 with sale prices ranging from $29.36 to $29.675 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
(2)	These securities are held directly by Radius Venture Partners III (Ohio), L.P. and indirectly by Radius Venture Partners III, LLC, the general partner of Radius Venture Partners III (Ohio), L.P., Jordan S. Davis, a director of Issuer, and managing member of Radius Venture Partners III, LLC and Daniel C. Lubin, managing member of Radius Venture Partners III, LLC. Each of Radius Venture Partners III, LLC, Mr. Davis and Mr. Lubin may be deemed to beneficially own such securities, and disclaims such beneficial ownership except to the extent of its or his pecuniary interest therein.
(3)	These securities are held directly by Radius Venture Partners III QP, L.P. and indirectly by Radius Venture Partners III, LLC, the general partner of Radius Venture Partners III QP, L.P., Jordan S. Davis, a director of Issuer and managing member of Radius Venture Partners III, LLC, and Daniel C. Lubin, managing member of Radius Venture Partners III, LLC. Each of Radius Venture Partners III, LLC, Mr. Davis and Mr. Lubin may be deemed to beneficially own such securities, and disclaims such beneficial ownership except to the extent of its or his pecuniary interest therein.
(4)	These securities are held directly by Radius Venture Partners III, L.P. and indirectly by Radius Venture Partners III, LLC, the general partner of Radius Venture Partners III, L.P., Jordan S. Davis, a director of Issuer, and managing member of Radius Venture Partners III, LLC and Daniel C. Lubin, managing member of Radius Venture Partners III, LLC. Each of Radius Venture Partners III, LLC, Mr. Davis and Mr. Lubin may be deemed to beneficially own such securities, and disclaims such beneficial ownership except to the extent of its or his pecuniary interest therein.
(5)	Reflects the weighted average price of 10,000 shares of common stock of Tactile Systems Technology, Inc. sold by the reporting person in multiple transactions on December 14, 2017 with sale prices ranging from $29.50 to $29.62 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Davis Jordan 1331 TYLER STREET NE, SUITE 200 MINNEAPOLIS, MN 55413	X

Signatures
/s/ Jonathan R. Zimmerman, Attorney-in-Fact		12/15/2017
** 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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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