William C Fallon
First SEC filing: March 5, 2026 · Latest: March 5, 2026
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 4, 2026 | MBI | F | 39,658 | $6.88 | $272,847 | 2,826,660 Direct | -1.38% | Disposed | -36.0% (price as of 2026-10-02) |
| March 3, 2026 | MBI | F | 27,726 | $6.50 | $180,219 | 2,866,318 Direct | -0.96% | Disposed | -32.3% (price as of 2026-10-02) |
| March 3, 2026 | MBI | A | 242,038 | $6.50 | $1,573,247 | 2,894,044 Direct | +9.13% | Acquired | -32.3% (price as of 2026-10-02) |
| March 3, 2026 | MBI | F | 27,726 | $6.50 | $180,219 | 2,866,318 Direct | -0.96% | Disposed | -32.3% (price as of 2026-10-02) |
| March 3, 2026 | MBI | A | 242,308 | $6.50 | $1,575,002 | 2,894,044 Direct | +9.14% | Acquired | -32.3% (price as of 2026-10-02) |
| Dec. 31, 2025 | MBI | A | 14,220 | $7.16 | $101,815 | 2,651,736 Direct | +0.54% | Acquired | -38.5% (price as of 2026-10-02) |
| March 4, 2025 | MBI | A | 286,885 | $5.49 | $1,574,999 | 2,637,516 Direct | +12.20% | Acquired | -19.9% (price as of 2026-10-02) |
| March 4, 2025 | MBI | F | 39,658 | $5.49 | $217,722 | 2,350,631 Direct | -1.66% | Disposed | -19.9% (price as of 2026-10-02) |
| March 3, 2025 | MBI | F | 556,019 | $5.53 | $3,074,785 | 2,390,289 Direct | -18.87% | Disposed | -20.4% (price as of 2026-10-02) |
| March 5, 2024 | MBI | F | 31,576 | $6.58 | $207,770 | 3,022,069 Direct | -1.03% | Disposed | -33.1% (price as of 2026-10-02) |
| March 4, 2024 | MBI | A | 243,431 | $6.47 | $1,574,999 | 3,053,645 Direct | +8.66% | Acquired | -32.0% (price as of 2026-10-02) |
| March 4, 2024 | MBI | F | 39,659 | $6.47 | $256,594 | 2,810,214 Direct | -1.39% | Disposed | -32.0% (price as of 2026-10-02) |
| March 3, 2024 | MBI | F | 38,812 | $6.71 | $260,429 | 2,849,873 Direct | -1.34% | Disposed | -34.4% (price as of 2026-10-02) |
| Feb. 20, 2024 | MBI | A | 24,917 | $6.77 | $168,688 | 2,888,685 Direct | +0.87% | Acquired | -35.0% (price as of 2026-10-02) |
| Dec. 29, 2023 | MBI | A | 21,086 | $6.12 | $129,046 | 2,863,768 Direct | +0.74% | Acquired | -28.1% (price as of 2026-10-02) |
| Dec. 26, 2023 | MBI | A | 225,882 | $7.16 | $1,617,315 | 2,842,682 Direct | +8.63% | Acquired | -38.5% (price as of 2026-10-02) |
| March 6, 2023 | MBI | F | 8,832 | $12.28 | $108,457 | 2,616,800 Direct | -0.34% | Disposed | -64.2% (price as of 2026-10-02) |
| March 6, 2023 | MBI | F | 8,832 | $12.28 | $108,457 | 2,692,829 Direct | -0.33% | Disposed | -64.2% (price as of 2026-10-02) |
| March 5, 2023 | MBI | F | 31,576 | $12.46 | $393,437 | 2,625,632 Direct | -1.19% | Disposed | -64.7% (price as of 2026-10-02) |
| March 5, 2023 | MBI | F | 31,576 | $12.46 | $393,437 | 2,701,661 Direct | -1.16% | Disposed | -64.7% (price as of 2026-10-02) |
| March 3, 2023 | MBI | F | 38,813 | $12.46 | $483,610 | 2,657,208 Direct | -1.44% | Disposed | -64.7% (price as of 2026-10-02) |
| March 3, 2023 | MBI | F | 38,813 | $12.46 | $483,610 | 1,780,620 Direct | -2.13% | Disposed | -64.7% (price as of 2026-10-02) |
| March 3, 2023 | MBI | A | 67,163 | $12.46 | $836,851 | 2,696,021 Direct | +2.55% | Acquired | -64.7% (price as of 2026-10-02) |
| March 3, 2023 | MBI | A | 42,135 | $12.46 | $525,002 | 2,628,858 Direct | +1.63% | Acquired | -64.7% (price as of 2026-10-02) |
| March 6, 2022 | MBI | F | 16,159 | $14.10 | $227,842 | 2,600,800 Direct | -0.62% | Disposed | -68.8% (price as of 2026-10-02) |
| March 5, 2022 | MBI | F | 31,576 | $14.10 | $445,222 | 2,616,959 Direct | -1.19% | Disposed | -68.8% (price as of 2026-10-02) |
| March 3, 2022 | MBI | A | 75,761 | · | · | 2,648,535 Direct | +2.94% | Acquired | (price as of 2026-10-02) |
| March 3, 2022 | MBI | A | 39,414 | · | · | 2,572,774 Direct | +1.56% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2021 | MBI | A | 58,842 | $15.79 | $929,115 | 2,533,360 Direct | +2.38% | Acquired | -72.1% (price as of 2026-10-02) |
| March 6, 2021 | MBI | F | 15,501 | $7.68 | $119,048 | 2,474,518 Direct | -0.62% | Disposed | -42.7% (price as of 2026-10-02) |
| March 4, 2021 | MBI | A | 117,146 | · | · | 2,490,019 Direct | +4.94% | Acquired | (price as of 2026-10-02) |
| March 4, 2021 | MBI | A | 69,907 | · | · | 2,372,873 Direct | +3.04% | Acquired | (price as of 2026-10-02) |
| March 3, 2021 | MBI | F | 14,505 | $7.10 | $102,986 | 2,302,966 Direct | -0.63% | Disposed | -38.0% (price as of 2026-10-02) |
| Nov. 18, 2020 | MBI | P | 100,000 | $6.17 | $617,000 | 2,397,108 Direct | +4.35% | Acquired | -28.7% (price as of 2026-10-02) |
| March 6, 2020 | MBI | F | 7,029 | $8.13 | $57,146 | 2,297,108 Direct | -0.31% | Disposed | -45.9% (price as of 2026-10-02) |
| March 3, 2020 | MBI | F | 14,505 | $7.93 | $115,025 | 2,061,975 Direct | -0.70% | Disposed | -44.5% (price as of 2026-10-02) |
| March 3, 2020 | MBI | A | 175,958 | · | · | 2,304,137 Direct | +8.27% | Acquired | (price as of 2026-10-02) |
| March 3, 2020 | MBI | A | 66,204 | · | · | 2,128,179 Direct | +3.21% | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2020 | MBI | D | 28,706 | · | · | 2,076,480 Direct | -1.36% | Disposed | (price as of 2026-10-02) |
| Dec. 31, 2019 | MBI | D | 58,220 | · | · | 2,105,186 Direct | -2.69% | Disposed | (price as of 2026-10-02) |
| March 5, 2019 | MBI | A | 77,424 | · | · | 2,163,406 Direct | +3.71% | Acquired | (price as of 2026-10-02) |
| March 5, 2019 | MBI | A | 49,296 | · | · | 2,085,982 Direct | +2.42% | Acquired | (price as of 2026-10-02) |
| March 3, 2019 | MBI | F | 14,505 | $10.61 | $153,898 | 2,036,686 Direct | -0.71% | Disposed | -58.5% (price as of 2026-10-02) |
| Nov. 8, 2018 | MBI | A | 1,000,000 | · | · | 2,051,191 Direct | +95.13% | Acquired | (price as of 2026-10-02) |
| March 6, 2018 | MBI | A | 79,637 | · | · | 1,051,191 Direct | +8.20% | Acquired | (price as of 2026-10-02) |
| March 6, 2018 | MBI | A | 51,904 | · | · | 971,554 Direct | +5.64% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2017 | MBI | D | 150,000 | · | · | 919,650 Direct | -14.02% | Disposed | (price as of 2026-10-02) |
| March 6, 2017 | MBI | A | 86,926 | · | · | 1,069,646 Direct | +8.85% | Acquired | (price as of 2026-10-02) |
| March 6, 2017 | MBI | A | 43,058 | · | · | 982,720 Direct | +4.58% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2016 | MBI | D | 150,000 | · | · | 939,658 Direct | -13.77% | Disposed | (price as of 2026-10-02) |
| Nov. 29, 2016 | MBI | M | 200,000 | · | · | 0 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 29, 2016 | MBI | F | 150,676 | $10.29 | $1,550,456 | 1,089,658 Direct | -12.15% | Disposed | -57.2% (price as of 2026-10-02) |
| Nov. 29, 2016 | MBI | M | 200,000 | $5.05 | $1,010,000 | 1,240,334 Direct | +19.22% | Acquired | -12.9% (price as of 2026-10-02) |
| March 3, 2016 | MBI | A | 88,863 | $8.44 | $750,004 | 1,040,312 Direct | +9.34% | Acquired | -47.9% (price as of 2026-10-02) |
| Feb. 10, 2016 | MBI | F | 312,945 | $6.15 | $1,924,612 | 951,449 Direct | -24.75% | Disposed | -28.5% (price as of 2026-10-02) |
| Feb. 10, 2016 | MBI | M | 400,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 10, 2016 | MBI | F | 312,930 | $6.15 | $1,924,520 | 951,464 Direct | -24.75% | Disposed | -28.5% (price as of 2026-10-02) |
| Feb. 10, 2016 | MBI | M | 400,000 | $4.02 | $1,608,000 | 1,264,394 Direct | +46.28% | Acquired | 9.5% (price as of 2026-10-02) |
| Dec. 31, 2015 | MBI | F | 154,710 | $6.48 | $1,002,521 | 864,371 Direct | -15.18% | Disposed | -32.1% (price as of 2026-10-02) |
| Aug. 7, 2015 | MBI | P | 150,000 | $6.30 | $945,000 | 1,019,081 Direct | +17.26% | Acquired | -30.2% (price as of 2026-10-02) |
| March 4, 2015 | MBI | F | 39,136 | $9.37 | $366,704 | 869,079 Direct | -4.31% | Disposed | -53.0% (price as of 2026-10-02) |
| March 4, 2014 | MBI | F | 51,570 | $14.84 | $765,299 | 908,206 Direct | -5.37% | Disposed | -70.4% (price as of 2026-10-02) |
| March 4, 2013 | MBI | F | 45,530 | $12.78 | $581,873 | 959,751 Direct | -4.53% | Disposed | -65.6% (price as of 2026-10-02) |
| Dec. 21, 2012 | MBI | A | 600,000 | $7.84 | $4,704,000 | 1,005,281 Direct | +148.05% | Acquired | -43.9% (price as of 2026-10-02) |
| May 19, 2011 | MBI | P | 3,900 | $8.97 | $34,983 | 405,281 Direct | +0.97% | Acquired | -50.9% (price as of 2026-10-02) |
| May 19, 2011 | MBI | P | 6,700 | $8.96 | $60,032 | 401,381 Direct | +1.70% | Acquired | -50.9% (price as of 2026-10-02) |
| May 19, 2011 | MBI | P | 4,500 | $8.95 | $40,275 | 394,681 Direct | +1.15% | Acquired | -50.8% (price as of 2026-10-02) |
| May 19, 2011 | MBI | P | 4,800 | $8.94 | $42,912 | 390,181 Direct | +1.25% | Acquired | -50.8% (price as of 2026-10-02) |
| May 19, 2011 | MBI | P | 100 | $8.94 | $894 | 385,381 Direct | +0.03% | Acquired | -50.8% (price as of 2026-10-02) |
| Aug. 25, 2010 | MBI | P | 25,000 | $8.72 | $218,000 | 385,281 Direct | +6.94% | Acquired | -49.5% (price as of 2026-10-02) |
| March 4, 2010 | MBI | A | 200,000 | $5.05 | $1,010,000 | 200,000 Direct | · | Acquired | -12.9% (price as of 2026-10-02) |
| March 4, 2010 | MBI | A | 300,000 | $5.05 | $1,515,000 | 360,281 Direct | +497.67% | Acquired | -12.9% (price as of 2026-10-02) |
| Feb. 9, 2010 | MBI | D | 12,631 | · | · | 60,281 Direct | -17.32% | Disposed | (price as of 2026-10-02) |
| March 5, 2009 | MBI | P | 32,992 | $2.40 | $79,181 | 72,912 Direct | +82.65% | Acquired | 83.3% (price as of 2026-10-02) |
| March 5, 2009 | MBI | P | 3,000 | $2.39 | $7,170 | 39,920 Direct | +8.13% | Acquired | 84.1% (price as of 2026-10-02) |
| March 5, 2009 | MBI | P | 900 | $2.38 | $2,142 | 36,920 Direct | +2.50% | Acquired | 84.9% (price as of 2026-10-02) |
| March 5, 2009 | MBI | P | 13,008 | $2.37 | $30,829 | 36,020 Direct | +56.53% | Acquired | 85.7% (price as of 2026-10-02) |
| March 5, 2009 | MBI | P | 100 | $2.37 | $237 | 23,012 Direct | +0.44% | Acquired | 85.7% (price as of 2026-10-02) |
| Feb. 12, 2009 | MBI | A | 400,000 | $4.02 | $1,608,000 | 400,000 Direct | · | Acquired | 9.5% (price as of 2026-10-02) |
| Feb. 10, 2009 | MBI | D | 13,403 | · | · | 22,912 Direct | -36.91% | Disposed | (price as of 2026-10-02) |
| March 28, 2008 | MBI | A | 400,000 | $12.50 | $5,000,000 | 400,000 Direct | · | Acquired | -64.8% (price as of 2026-10-02) |
| March 5, 2008 | MBI | J | 2,725 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 5, 2008 | MBI | D | 5,000 | · | · | 35,251 Direct | -12.42% | Disposed | (price as of 2026-10-02) |
| March 4, 2008 | MBI | P | 7,000 | $12.43 | $87,010 | 40,251 Direct | +21.05% | Acquired | -64.6% (price as of 2026-10-02) |
| Dec. 20, 2007 | MBI | A | 2,725 | · | · | 2,725 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 7, 2007 | MBI | P | 2,000 | $34.60 | $69,200 | 33,251 Direct | +6.40% | Acquired | -87.3% (price as of 2026-10-02) |
| Feb. 15, 2007 | MBI | A | 12,631 | $70.86 | $895,033 | 31,251 Direct | +67.84% | Acquired | -93.8% (price as of 2026-10-02) |
| March 23, 2006 | MBI | A | 5,000 | $59.20 | $296,000 | 18,436 Direct | +37.21% | Acquired | -92.6% (price as of 2026-10-02) |
| Feb. 27, 2006 | MBI | A | 13,403 | $59.69 | $800,025 | 13,436 Direct | +40615.15% | Acquired | -92.6% (price as of 2026-10-02) |
| July 25, 2005 | MBI | A | 60,000 | $60.22 | $3,613,200 | 60,000 Direct | · | Acquired | -92.7% (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| Nov. 29, 2016 | MBI | Common Stock | Common Stock | $5.05 | March 4, 2017 | 200,000 | Acquired |
| Feb. 10, 2016 | MBI | Common Stock | Common Stock | $4.02 | Feb. 12, 2016 | 400,000 | Disposed |
| March 4, 2010 | MBI | Employee Stock Option (right to buy) | Common Stock | $5.05 | March 4, 2017 | 200,000 | Acquired |
| Feb. 12, 2009 | MBI | Employee Stock Option (right to buy) | Common Stock | $4.02 | Feb. 12, 2016 | 400,000 | Acquired |
| March 28, 2008 | MBI | Employee Stock Option (right to buy) | Common Stock | $12.50 | March 28, 2015 | 400,000 | Acquired |
| March 5, 2008 | MBI | Stock Options (right to purchase) | Common Stock | $31.00 | · | 2,725 | Disposed |
| Dec. 20, 2007 | MBI | Stock Options (right to purchase) | Common Stock | $31.00 | · | 2,725 | Acquired |
| July 25, 2005 | MBI | Employee Stock Option | Common Stock | $60.22 | July 25, 2015 | 60,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 26, 2005 | MBI | No securities beneficially owned | 0 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2010 | · | · | · | · | · | · | · | · |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.