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Filing Details

Accession Number:: 0001104659-15-051730
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2015-07-17 17:28:28
Reporting Period:: 2015-07-15

Filing Date:: 2015-07-17
Accepted Time:: 2015-07-17 17:28:28
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1492674	T2 Biosystems Inc.	TTOO	Surgical & Medical Instruments & Apparatus (3841)	204827488

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1439586	Polaris Venture Partners Special Founders' Fund V, L.p.	1000 Winter Street, Suite 3350 Waltham MA 02451	No	No	Yes	No
1439587	Polaris Venture Partners Entrepreneurs' Fund V, L.p.	1000 Winter Street, Suite 3350 Waltham MA 02451	No	No	Yes	No
1439588	Polaris Venture Partners Founders' Fund V, L.p.	1000 Winter Street, Suite 3350 Waltham MA 02451	No	No	Yes	No
1439589	Polaris Venture Management Co. V, L.l.c.	1000 Winter Street, Suite 3350 Waltham MA 02451	No	No	Yes	No
1439590	Polaris Venture Partners V, L.p.	1000 Winter Street, Suite 3350 Waltham MA 02451	No	No	Yes	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2015-07-15	282	$16.14	39,863	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-15	99	$16.14	58,669	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-15	144	$16.14	80,816	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-15	14,474	$16.14	2,128,513	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-16	282	$16.33	39,581	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-16	99	$16.33	58,570	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-16	144	$16.33	80,672	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-16	14,474	$16.33	2,114,039	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-17	282	$16.30	39,299	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-17	99	$16.30	58,471	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-17	144	$16.30	80,528	No	4	S	Indirect	See Footnotes
Common Stock	Disposition	2015-07-17	14,474	$16.30	2,099,565	No	4	S	Indirect	See Footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes
No	4	S	Indirect	See Footnotes

Footnotes

The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting persons on May 22, 2015.
By Polaris Venture Partners Entrepreneurs' Fund V, L.P.
By Polaris Venture Partners Founders' Fund V, L.P.
By Polaris Venture Partners Special Founders' Fund V, L.P.
By Polaris Venture Partners V, L.P.
The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $15.86 to $16.58. The reporting persons undertake to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Each of Polaris Venture Partners V, L.P., Polaris Venture Partners Special Founder's Fund V, L.P., Polaris Venture Partners Founders' Fund V, L.P. and Polaris Venture Partners Entrepreneurs' Fund V, L.P. (collectively, the "Funds") has the sole voting and investment power with respect to the shares directly held by it. The general partner of each of the Funds is Polaris Venture Management Co. V, LLC, or Polaris Management. Polaris Management may be deemed to have sole voting and investment power with respect to the shares held by the Funds and disclaims beneficial ownership of all the shares held by the Funds except to the extent of its proportionate pecuniary interest therein.
The members of North Star Venture Management 2000, LLC, Terrence McGuire and Jonathan Flint, collectively the Management Members, are also members of Polaris Management, and as members of the general partner, they may be deemed to share voting and investment power over the shares held by the Funds. The Management Members disclaim beneficial ownership of such shares, except to the extent of their proportionate pecuniary interest therein.
The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $15.96 to $16.75. The reporting persons undertake to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $15.90 to $16.61. The reporting persons undertake to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.