| 2020-03-13 | Snell E Bryan | President, Titanium Tech | Buy | 11,000 | $10.15 | $111,650.00 | +8.4% | → |
| 2020-03-02 | BROWN RICHARD H | Director | Buy | 7,500 | $14.06 | $105,450.00 | +9.2% | → |
| 2020-01-23 | VERGNANO MARK P | President and CEO | Sale+OE | 220,759 | $16.00 | $3,532,673.82 | -55.3% | → |
| 2019-09-11 | Newman Mark | Senior VP & COO | Buy | 20,000 | $16.42 | $328,340.00 | +21.2% | → |
| 2019-08-07 | CRANSTON MARY B | Director | Buy | 1,790 | $13.99 | $25,042.10 | +5.2% | → |
| 2019-08-06 | Snell E Bryan | President - Titanium Tech | Buy | 12,000 | $13.77 | $165,240.00 | +11.3% | → |
| 2019-08-05 | Shelton David C | SVP, GC & Corp. Secretary | Buy | 15,000 | $13.82 | $207,256.50 | +18.0% | → |
| 2019-08-05 | BELL BRADLEY J | Director | Buy | 5,000 | $14.67 | $73,350.00 | +32.5% | → |
| 2019-08-05 | ANASTASIO CURT | Director | Buy | 3,500 | $14.15 | $49,525.00 | New | → |
| 2019-06-10 | VERGNANO MARK P | President and CEO | Buy | 44,000 | $23.17 | $1,019,466.80 | +60.6% | → |
| 2019-05-17 | Kelliher Susan M. | SVP, People & Health Services | Buy | 6,500 | $23.06 | $149,878.30 | +296.4% | → |
| 2019-05-16 | CRANSTON MARY B | Director | Buy | 1,044 | $23.91 | $24,965.90 | +3.2% | → |
| 2019-05-16 | BELL BRADLEY J | Director | Buy | 5,000 | $24.06 | $120,300.00 | +48.1% | → |
| 2019-03-15 | Trojanowski Amy | VP and Controller | Sale+OE | 10,129 | $39.10 | $396,043.90 | -10.1% | → |
| 2019-03-11 | Newman Mark | Senior VP and CFO | Sell | 59,210 | $38.26 | $2,265,374.60 | -38.6% | → |
| 2019-03-01 | Trojanowski Amy | VP and Controller | Sale+OE | 13,536 | $38.63 | $522,884.85 | -13.1% | → |
| 2019-02-25 | Kirsch Paul | President - Fluoroproducts | Sell | 10,000 | $38.66 | $386,600.00 | -12.0% | → |
| 2018-12-03 | BROWN RICHARD H | Director | Buy | 10,000 | $28.60 | $286,000.00 | +15.8% | → |
| 2018-05-09 | VERGNANO MARK P | President and CEO | Sale+OE | 200,151 | $50.47 | $10,101,600.18 | -28.6% | → |
| 2018-05-08 | Newman Mark | SVP and CFO | Sale+OE | 43,675 | $50.04 | $2,185,403.75 | -20.7% | → |
| 2018-04-17 | Parker Erich | SVP Corp Communications & CBO | Sale+OE | 5,000 | $52.00 | $260,000.00 | -17.0% | → |
| 2018-03-09 | Newman Mark | Senior VP and CFO | Sell | 29,381 | $49.19 | $1,445,262.47 | -13.6% | → |
| 2018-02-20 | Kirsch Paul | President, Fluoroproducts | Sale+OE | 13,770 | $50.01 | $688,637.70 | -21.8% | → |
| 2017-12-13 | Siemer Christian W | President, Chemical Solutions | Sale+OE | 15,088 | $47.37 | $714,718.56 | -15.0% | → |
| 2017-11-06 | Snell E Bryan | President, Titanium Tech | Sale+OE | 11,878 | $53.25 | $632,503.50 | -18.8% | → |
| 2017-10-13 | Shelton David C | SVP, GC & Corp. Secretary | Sale+OE | 5,908 | $56.01 | $330,907.08 | -12.5% | → |
| 2017-10-10 | Shelton David C | SVP, GC & Corp. Secretary | Sale+OE | 13,397 | $55.00 | $736,835.00 | -13.9% | → |
| 2017-10-05 | Shelton David C | SVP, GC & Corp. Secretary | Sale+OE | 19,000 | $53.68 | $1,020,000.00 | -13.3% | → |
| 2017-09-05 | Snell E Bryan | President, Titanium Tech | Sell | 13,000 | $49.35 | $641,550.00 | -20.3% | → |
| 2017-08-31 | Shelton David C | SVP, GC & Corp. Secretary | Sale+OE | 13,337 | $48.48 | $646,577.76 | -24.4% | → |
| 2017-08-11 | Snell E Bryan | President, Titanium Tech | Sell | 10,000 | $46.24 | $462,400.00 | -13.5% | → |
| 2017-08-11 | Trojanowski Amy | VP and Controller | Sell | 2,500 | $46.03 | $115,086.33 | -4.1% | → |
| 2017-06-05 | Kirsch Paul | President - Fluoroproducts | Sell | 19,036 | $41.42 | $788,471.12 | -27.8% | → |
| 2017-05-16 | Parker Erich | VP Corp Comm & CBO | Sale+OE | 4,908 | $45.53 | $223,461.24 | -16.3% | → |
| 2017-05-05 | Newman Mark | Senior VP and CFO | Sell | 22,781 | $39.83 | $907,478.92 | -14.3% | → |
| 2017-05-03 | BROWN RICHARD H | Director | Buy | 2,500 | $39.10 | $97,750.00 | +4.4% | → |
| 2016-05-13 | Newman Mark | Senior VP and CFO | Buy | 2,800 | $9.71 | $27,175.00 | +186.7% | → |