Judge Mark G. Mastroianni — Federal Sentencing Patterns

U.S. District Judge Mark G. Mastroianni sits in the District of Massachusetts (DMA) and granted a downward variance in 117 of 173 federal sentencings (67.6%) from FY2012–FY2025. This page shows aggregate sentencing patterns for Judge Mark G. Mastroianni, including the most common reasons cited on the Statement of Reasons (SOR) for granting a downward variance.

Top reasons Judge Mark G. Mastroianni grants downward variances

Reasons included across all guideline chapters (117 below-guideline cases out of 173 cases identified)

ReasonCasesAvg % Below Min
  1. 1.(5H1.6) Family ties and responsibilities50-58.6%
  2. 2.Reduce Disparity (aggregated reason)28-60.6%
  3. 3.Rehabilitation23-55.6%
  4. 4.(5H1.6) Community ties22-70.5%
  5. 5.Criminal History Issues (aggregated reason)21-56.4%
  6. 6.Lack of Youthful Guidance21-40.4%
  7. 7.Mental and Emotional Conditions (aggregated reason)20-44.6%
  8. 8.(5H1.1) Age (Defendant's youth or old age)16-43.0%
  9. 9.(5H1.4) Drug dependence and alcohol abuse14-48.4%
  10. 10.(5H1.5) Previous employment record11-82.7%

Zone D sentencing variance — Judge Mark G. Mastroianni

Imprisonment-only recommended sentencing zone (offense level 14+ at any criminal history). Of Judge Mark G. Mastroianni's 143 Zone D sentencings, 106 (74.1%) fell below range.

Zone D · imprisonment recommended143 cases
  • Within range
    28(19.6%)
  • Below range
    106(74.1%)
    avg −46.2% below min
  • Above range
    9(6.3%)
    avg +40.0% above max

Need case-level analysis for Judge Mark G. Mastroianni?

Want to see what those 117 below-guideline cases actually looked like? Just Metrics shows you the actual matched cases — same judge, same guideline chapter, same guideline range — and tells you what they did.

Just Metrics also surfaces Judge Mark G. Mastroianni's trial tax (sentences after trial vs. plea) and the average §5K1.1 cooperation discount.

EXPLORE JUST METRICS →