Walter Gregory Baker

Insider

First SEC filing: Aug. 11, 2014 · Latest: Aug. 11, 2014

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

MTSI selling Sept. 16, 2016

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 12 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

12 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Sept. 16, 2016	MTSI	S 10b5-1	3,341	$42.34	$141,458	17,550 Direct	-15.99%	Disposed	537.4% (price as of 2026-08-21)
May 18, 2016	MTSI	S 10b5-1	6,149	$36.65	$225,361	20,891 Direct	-22.74%	Disposed	636.3% (price as of 2026-08-21)
March 21, 2016	MTSI	M	5,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 21, 2016	MTSI	S 10b5-1	2,401	$42.96	$103,147	26,634 Direct	-8.27%	Disposed	528.2% (price as of 2026-08-21)
March 21, 2016	MTSI	S 10b5-1	2,599	$42.50	$110,458	29,035 Direct	-8.22%	Disposed	535.0% (price as of 2026-08-21)
March 21, 2016	MTSI	M	5,000	$17.50	$87,500	31,634 Direct	+18.77%	Acquired	1442.1% (price as of 2026-08-21)
Dec. 21, 2015	MTSI	M	5,000	—	—	5,000 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Dec. 21, 2015	MTSI	S 10b5-1	5,000	$39.75	$198,750	28,679 Direct	-14.85%	Disposed	578.9% (price as of 2026-08-21)
Dec. 21, 2015	MTSI	M	5,000	$17.50	$87,500	33,679 Direct	+17.43%	Acquired	1442.1% (price as of 2026-08-21)
Nov. 19, 2015	MTSI	S 10b5-1	486	$35.00	$17,010	28,679 Direct	-1.67%	Disposed	671.1% (price as of 2026-08-21)
Nov. 13, 2015	MTSI	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 13, 2015	MTSI	A	3,973	—	—	28,679 Direct	+16.08%	Acquired	(price as of 2026-08-21)
Nov. 9, 2015	MTSI	A	4,041	—	—	24,706 Direct	+19.55%	Acquired	(price as of 2026-08-21)
Oct. 23, 2015	MTSI	S 10b5-1	16,664	$35.00	$583,240	32,788 Direct	-33.70%	Disposed	671.1% (price as of 2026-08-21)
Oct. 23, 2015	MTSI	M	10,000	$17.50	$175,000	49,452 Direct	+25.35%	Acquired	1442.1% (price as of 2026-08-21)
Oct. 22, 2015	MTSI	M	10,000	—	—	10,000 Direct	-50.00%	Disposed	(price as of 2026-08-21)
May 15, 2015	MTSI	F	2,045	$35.14	$71,861	26,634 Direct	-7.13%	Disposed	668.0% (price as of 2026-08-21)
April 22, 2015	MTSI	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-21)
April 22, 2015	MTSI	A	16,164	—	—	38,781 Direct	+71.47%	Acquired	(price as of 2026-08-21)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
March 21, 2016	MTSI	Employee Stock Option (Right to Buy)	Common Stock (5,000)	$17.50	April 29, 2024	5,000	Disposed
Dec. 21, 2015	MTSI	Employee Stock Option (Right to Buy)	Common Stock (5,000)	$17.50	April 29, 2024	5,000	Disposed
Nov. 13, 2015	MTSI	Employee Stock Option (Right to Buy)	Common Stock (10,000)	$32.10	Nov. 12, 2022	10,000	Acquired
Oct. 22, 2015	MTSI	Employee Stock Option (Right to Buy)	Common Stock (10,000)	$17.50	April 29, 2024	10,000	Disposed
April 22, 2015	MTSI	Employee Stock Option (Right to Buy)	Common Stock (10,000)	$34.46	April 22, 2022	10,000	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Aug. 11, 2014	MTSI	Common Stock	22,617	Direct
Aug. 11, 2014	MTSI	Employee Stock Option (Right to Buy)→ Common Stock (20,000)	20,000	Direct