| 2019-12-11 | Catlett Janet Anne | VP, CHRO | Buy | 1 | $97.96 | $96.49 | - | → |
| 2019-11-26 | Mergner Arthur W | VP, Supply Chain | Sale+OE | 3,803 | $100.00 | $380,280.99 | -24.9% | → |
| 2019-11-13 | Kabbes David | VP GC & Secretary | Buy | 821 | $97.50 | $80,047.50 | New | → |
| 2019-11-07 | LAWTON GREGORY E | Director | Sell | 1,290 | $99.75 | $128,677.50 | -7.5% | → |
| 2019-09-13 | Moriarty Sean Thomas | VP & GM Polymers | Sale+OE | 1,961 | $99.30 | $194,722.56 | -18.1% | → |
| 2019-09-13 | Catlett Janet Anne | VP, CHRO | Buy | 1 | $98.32 | $87.50 | - | → |
| 2019-09-10 | PACHOLEC FRANK | Vice President, Strategy | Sell | 2,383 | $97.23 | $231,689.56 | -6.4% | → |
| 2019-09-04 | Mergner Arthur W | VP, Supply Chain | Sell | 3,232 | $96.16 | $310,827.01 | -50.0% | → |
| 2019-08-28 | Stefaniak Debra | VP, Business Enablement | Sell | 500 | $94.75 | $47,375.00 | -5.8% | → |
| 2019-08-09 | Moriarty Sean Thomas | VP & GM Polymers | Sale+OE | 1,092 | $95.11 | $103,864.36 | -10.8% | → |
| 2019-07-31 | Moriarty Sean Thomas | VP & GM Polymers | Sale+OE | 3,418 | $98.97 | $338,292.15 | -17.1% | → |
| 2019-07-30 | Behrens Scott R. | VP/GM Surfactants | Sale+OE | 7,710 | $98.60 | $760,209.02 | -16.6% | → |
| 2019-07-26 | Behrens Scott R. | VP/GM Surfactants | Sale+OE | 2,004 | $97.39 | $195,163.55 | -15.3% | → |
| 2019-06-11 | PACHOLEC FRANK | Vice President, Strategy | Sell | 1,931 | $91.94 | $177,545.22 | -5.0% | → |
| 2019-06-11 | Stefaniak Debra | VP, Business Enablement | Sell | 300 | $92.63 | $27,789.90 | -3.3% | → |
| 2019-06-10 | WEHMER EDWARD J | Director | Sell | 1,200 | $90.52 | $108,619.50 | -9.6% | → |
| 2019-05-23 | Rojo Luis | VP & Chief Financial Officer | Buy | 500 | $85.54 | $42,770.00 | +26.3% | → |
| 2019-05-22 | Rojo Luis | VP & Chief Financial Officer | Buy | 300 | $86.64 | $25,992.00 | +18.8% | → |
| 2019-05-14 | Rojo Luis | VP & Chief Financial Officer | Buy | 200 | $87.19 | $17,438.00 | +14.3% | → |
| 2019-05-07 | Rojo Luis | VP & Chief Financial Officer | Buy | 250 | $88.23 | $22,058.50 | +21.7% | → |
| 2019-05-03 | LAWTON GREGORY E | Director | Sell | 2,201 | $91.14 | $200,592.54 | -11.3% | → |
| 2019-05-03 | Rojo Luis | VP & Chief Financial Officer | Buy | 250 | $89.57 | $22,392.50 | +27.8% | → |
| 2019-03-15 | Behrens Scott R. | VP/GM Surfactants | Sell | 2,000 | $89.78 | $179,569.00 | -14.5% | → |
| 2019-03-15 | Stefaniak Debra | VP, Business Enablement | Sell | 200 | $90.10 | $18,020.00 | -2.2% | → |
| 2019-03-15 | Rojo Luis | VP & Chief Financial Officer | Buy | 200 | $89.75 | $17,950.00 | +28.6% | → |
| 2019-03-13 | Rojo Luis | VP & Chief Financial Officer | Buy | 200 | $90.87 | $18,174.00 | +40.0% | → |
| 2019-03-11 | Behrens Scott R. | VP/GM Surfactants | Sell | 2,000 | $91.24 | $182,484.00 | -12.7% | → |
| 2019-03-07 | Mergner Arthur W | VP, Supply Chain | Sale+OE | 1,038 | $90.01 | $93,427.68 | -6.8% | → |
| 2019-03-07 | Rojo Luis | VP & Chief Financial Officer | Buy | 100 | $90.17 | $9,017.00 | +25.0% | → |
| 2019-03-01 | STEPAN F QUINN JR | Chairman, President & CEO | Sale+OE | 12,889 | $93.83 | $1,209,342.65 | -6.4% | → |
| 2019-01-07 | Slone Robert Victor | VP Chief Tech & Sustainability | Sale+OE | 517 | $75.17 | $38,862.89 | -6.8% | → |
| 2018-12-14 | Rojo Luis | VP & Chief Financial Officer | Buy | 400 | $78.72 | $31,488.00 | New | → |
| 2018-12-12 | Stefaniak Debra | VP, Business Enablement | Sell | 200 | $79.88 | $15,975.40 | -2.9% | → |
| 2018-11-29 | Slone Robert Victor | VP Chief Tech & Sustainability | Sale+OE | 3,741 | $80.32 | $300,473.38 | -45.8% | → |
| 2018-11-07 | LAWTON GREGORY E | Director | Sell | 2,114 | $87.75 | $185,503.50 | -10.3% | → |
| 2018-11-02 | Mergner Arthur W | VP, Supply Chain | Sell | 1,500 | $83.75 | $125,627.89 | -7.9% | → |
| 2018-10-29 | WEHMER EDWARD J | Director | Sell | 1,400 | $84.91 | $118,869.80 | -13.9% | → |
| 2018-09-13 | PACHOLEC FRANK | Vice President, Strategy | Sell | 500 | $89.49 | $44,745.20 | -0.7% | → |
| 2018-09-06 | PACHOLEC FRANK | Vice President, Strategy | Sell | 699 | $87.59 | $61,226.81 | -1.9% | → |
| 2018-08-10 | PACHOLEC FRANK | Vice President, Strategy | Sell | 25 | $87.10 | $2,137.43 | - | → |