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Filing Details

Accession Number:: 0001104659-13-049694
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2013-06-17 18:09:59
Reporting Period:: 2013-06-17

Filing Date:: 2013-06-17
Accepted Time:: 2013-06-17 18:09:59
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1484504	Gigamon Inc.	GIMO	Services-Computer Processing & Data Preparation (7374)	263963351

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1343244	P L Vii-B Partners Capital Highland	C/O Highland Capital Partners, One Broadway, 16Th Floor Cambridge MA 02142	No	No	Yes	No
1343673	Highland Capital Partners Vii-C Lp	C/O Highland Capital Partners, One Broadway, 16Th Floor Cambridge MA 02142	No	No	Yes	No
1343678	Highland Capital Partners Vii Lp	C/O Highland Capital Partners, One Broadway, 16Th Floor Cambridge MA 02142	No	No	Yes	No
1357840	Partnership Limited Vii Fund Entrepreneurs Highland	C/O Highland Capital Partners, One Broadway, 16Th Floor Cambridge MA 02142	No	No	Yes	No
1554026	Highland Management Partners Vii, Llc	C/O Highland Capital Partners, One Broadway, 16Th Floor Cambridge MA 02142	No	No	Yes	No
1554027	Partnership Limited Vii Partners Management Highland	C/O Highland Capital Partners, One Broadway, 16Th Floor Cambridge MA 02142	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	Acquisiton	2013-06-17	4,985,927	$0.00	4,985,927	No	4	C	Indirect	See Footnote
Common Stock	Acquisiton	2013-06-17	1,208,187	$0.00	1,208,187	No	4	C	Indirect	See Footnote
Common Stock	Acquisiton	2013-06-17	1,759,502	$0.00	1,759,502	No	4	C	Indirect	See Footnote
Common Stock	Acquisiton	2013-06-17	156,231	$0.00	156,231	No	4	C	Indirect	See Footnote
Common Stock	Disposition	2013-06-17	304,325	$17.67	4,681,602	No	4	S	Indirect	See Footnote
Common Stock	Disposition	2013-06-17	73,744	$17.67	1,134,443	No	4	S	Indirect	See Footnote
Common Stock	Disposition	2013-06-17	107,395	$17.67	1,652,107	No	4	S	Indirect	See Footnote
Common Stock	Disposition	2013-06-17	9,536	$17.67	146,695	No	4	S	Indirect	See Footnote

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

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Series A Preferred Stock	Disposition	2013-06-17	4,985,927	$0.00	4,985,927	$0.00
Common Stock	Series A Preferred Stock	Disposition	2013-06-17	1,208,187	$0.00	1,208,187	$0.00
Common Stock	Series A Preferred Stock	Disposition	2013-06-17	1,759,502	$0.00	1,759,502	$0.00
Common Stock	Series A Preferred Stock	Disposition	2013-06-17	156,231	$0.00	156,231	$0.00

Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect

Footnotes

The securities are held by Highland Capital Partners VII Limited Partnership ("HCP VII"). Highland Management Partners VII, LLC ("HMP VII LLC") is the general partner of Highland Management Partnership VII Limited Partnership ("HMP VII LP"), which is the general partner of HCP VII. Each of HMP VII LP and HMP VII LLC disclaims beneficial ownership of all shares held by HCP VII except to the extent, if any, of such entity's pecuniary interest therein.
The securities are held by Highland Capital Partners VII-B Limited Partnership ("HCP VII-B"). HMP VII LP is the general partner of HCP VII-B. Each of HMP VII LP and HMP VII LLC disclaims beneficial ownership of all shares held by HCP VII-B except to the extent, if any, of such entity's pecuniary interest therein.
The securities are held by Highland Capital Partners VII-C Limited Partnership ("HCP VII-C"). HMP VII LP is the general partner of HCP VII-C. Each of HMP VII LP and HMP VII LLC disclaims beneficial ownership of all shares held by HCP VII-C except to the extent, if any, of such entity's pecuniary interest therein.
The securities are held by Highland Entrepreneurs' Fund VII Limited Partnership ("HEF VII"). HMP VII LP is the general partner of HEF VII. Each of HMP VII LP and HMP VII LLC disclaims beneficial ownership of all shares held by HEF VII except to the extent, if any, of such entity's pecuniary interest therein.
Immediately prior to the closing of the Issuer's initial public offering, each share of Series A preferred stock automatically converted into one share of common stock. The Series A preferred stock had no expiration date.