James C. Diggs is Sr. VP & Gen. Counsel at PPG INDUSTRIES INC (PPG). They have made 22 open-market trades across 3 companies since 2006, most recently 2026-05-28.
CIK 0001200401
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $99K since 2011, against 21 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ATI | 46,590 | $8.7M |
| PPG | 8,009 | $860K |
| BDN | 166,254 | $437K |
| Total | $9.9M |
Shares reported on the most recent Form 4, priced at the 2026-06-01 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BDN | SELL | 2025-10-30 | 2025-10-31 | $3.47 | $161K | +2.1% | -1.2% | -16.5% |
| ATI | SELL · 10b5-1 | 2023-09-08 | 2023-09-12 | $44.90 | $240K | -4.9% | -10.8% | -7.8% |
| ATI | SELL | 2022-07-19 | 2022-07-21 | $24.00 | $300K | +5.2% | +32.0% | +19.7% |
| ATI | SELL | 2019-06-17 | 2019-06-19 | $23.65 | $95K | -0.2% | -0.4% | -15.6% |
| BDN | SELL | 2019-05-20 | 2019-05-21 | $14.84 | $55K | +0.9% | +3.5% | -2.6% |
| ATI | SELL | 2018-07-26 | 2018-07-30 | $29.15 | $224K | -4.1% | -2.4% | -9.9% |
| BDN | SELL | 2018-07-26 | 2018-07-30 | $16.09 | $168K | +3.0% | +3.7% | -12.6% |
| BDN | BUY | 2011-05-04 | 2011-05-05 | $12.32 | $99K | -4.6% | +1.2% | +1.2% |
| PPG | SELL | 2010-04-29 | 2010-04-30 | $70.27 | $562K | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2010-04-26 | 2010-04-27 | $70.96 | $1.4M | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2010-02-24 | 2010-02-25 | $61.63 | $492K | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2009-09-11 | 2009-09-14 | $57.28 | $206K | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2009-03-17 | 2009-03-19 | $33.77 | $118K | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2008-03-03 | 2008-03-04 | $61.99 | $310K | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2007-06-05 | 2007-06-07 | $76.21 | $2.8M | -4.3% | +0.7% | +0.7% |
| ATI | SELL | 2007-06-04 | 2007-06-06 | $114.92 | $115K | -23.1% | +4.3% | +4.3% |
| PPG | SELL | 2007-02-20 | 2007-02-22 | $67.77 | $481K | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2007-02-20 | 2007-02-22 | $67.27 | $1.5M | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2007-02-16 | 2007-02-20 | $68.10 | $340K | -4.3% | +0.7% | +0.7% |
| ATI | SELL | 2007-02-13 | 2007-02-15 | $99.43 | $298K | -23.1% | +4.3% | +4.3% |
| ATI | SELL | 2006-06-13 | 2006-06-15 | $57.10 | $25K | -23.1% | +4.3% | +4.3% |
| PPG | SELL | 2006-05-23 | 2006-05-24 | $64.65 | $711K | -4.3% | +0.7% | +0.7% |
| PPG | SELL | 2006-05-11 | 2006-05-15 | $68.21 | $530K | -4.3% | +0.7% | +0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.