Richard H Walker

Insider

First SEC filing: Feb. 1, 2008 · Latest: Feb. 1, 2008

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 16 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

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Jan. 30, 2008	MBI	M	2,609	$13.96	$36,422	0 Direct	-100.00%	Disposed	-66.2% (price as of 2026-08-20)
Jan. 30, 2008	MBI	M	2,609	$13.96	$36,422	2,609 Direct	—	Acquired	-66.2% (price as of 2026-08-20)
Jan. 30, 2008	MBI	D	1,911	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 2, 2008	MBI	A	1,264	$18.98	$23,991	2,609 Direct	+93.98%	Acquired	-75.1% (price as of 2026-08-20)
Dec. 21, 2007	MBI	A	22	$20.03	$441	1,345 Direct	+1.66%	Acquired	-76.4% (price as of 2026-08-20)
Oct. 1, 2007	MBI	A	252	$63.40	$15,977	1,322 Direct	+23.55%	Acquired	-92.5% (price as of 2026-08-20)
Sept. 21, 2007	MBI	A	6	$60.81	$365	1,070 Direct	+0.56%	Acquired	-92.2% (price as of 2026-08-20)
July 2, 2007	MBI	A	274	$62.07	$17,007	1,064 Direct	+34.68%	Acquired	-92.4% (price as of 2026-08-20)
June 22, 2007	MBI	A	5	$57.47	$287	790 Direct	+0.64%	Acquired	-91.8% (price as of 2026-08-20)
May 3, 2007	MBI	A	707	$70.78	$50,041	1,911 Direct	+58.72%	Acquired	-93.3% (price as of 2026-08-20)
April 2, 2007	MBI	A	385	$64.88	$24,979	786 Direct	+96.01%	Acquired	-92.7% (price as of 2026-08-20)
March 23, 2007	MBI	A	2	$66.25	$132	400 Direct	+0.50%	Acquired	-92.9% (price as of 2026-08-20)
Jan. 3, 2007	MBI	A	234	$72.52	$16,970	398 Direct	+142.68%	Acquired	-93.5% (price as of 2026-08-20)
Dec. 22, 2006	MBI	A	1	$72.20	$72	164 Direct	+0.61%	Acquired	-93.5% (price as of 2026-08-20)
Oct. 2, 2006	MBI	A	163	$61.31	$9,994	163 Direct	—	Acquired	-92.3% (price as of 2026-08-20)
Sept. 18, 2006	MBI	A	1,204	$62.32	$75,033	1,204 Direct	—	Acquired	-92.4% (price as of 2026-08-20)

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.

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Jan. 30, 2008	MBI	Hypothetical Share Units	Common Stock (2,609)	$13.96	Jan. 30, 2008	2,609	Disposed
Jan. 2, 2008	MBI	Hypothetical Stock Unit	Common Stock (1,264)	$18.98	—	1,264	Acquired
Dec. 21, 2007	MBI	Hypothetical Stock Units	Common Stock (22)	$20.03	—	22	Acquired
Oct. 1, 2007	MBI	Hypothetical Stock Units	Common Stock (252)	$63.40	—	252	Acquired
Sept. 21, 2007	MBI	Hypothetical Stock Units	Common Stock (6)	$60.81	—	6	Acquired
July 2, 2007	MBI	Hypothetical Stock Units	Common Stock (274)	$62.07	—	274	Acquired
June 22, 2007	MBI	Hypothetical Stock Units	Common Stock (5)	$57.47	—	5	Acquired
April 2, 2007	MBI	Hypothetical Stock Units	Common Stock (385)	$64.88	—	385	Acquired
March 23, 2007	MBI	Hypothetical Stock Units	Common Stock (2)	$66.25	—	2	Acquired
Jan. 3, 2007	MBI	Hypothetical Stock Units	Common Stock (234)	$72.52	—	234	Acquired
Dec. 22, 2006	MBI	Hypothetical Stock Units	Common Stock (1)	$72.20	—	1	Acquired
Oct. 2, 2006	MBI	Hypothetical Stock Units	Hypothet. Stock Units (163)	$61.31	—	163	Acquired

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

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

Date	Ticker	Security	Shares	Ownership
Sept. 20, 2006	MBI	No securities owned	0	Direct