Constellation Energy Corporation (CEG) has 20 known insider and institutional holders on record. The largest holder is SHATTUCK MAYO A III with 559,723 shares. Other notable holders include Dominguez Joseph and LAWLESS ROBERT J.
Over the last 12 months, insiders have made 39 transactions in CEG stock — 26 buys (valued at $2.47M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
CEG Insider Ownership
Top Holder
SHATTUCK MAYO A III
559,723 shares
Buys (12 mo)
26
$2.47M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Shattuck Mayo A Iii |
Chairman, Pres. & CEO |
559,723 |
2012-02-28 |
|
| 2 |
Dominguez Joseph |
Officer |
75,610 |
2023-02-08 |
|
| 3 |
Lawless Robert J |
Director |
54,328 |
2026-01-05 |
|
| 4 |
De Balmann Yves C |
Director |
50,522 |
2025-05-01 |
|
| 5 |
Hrabowski Freeman A Iii |
Director |
33,369 |
2012-01-04 |
|
| 6 |
Barron Henry B Jr |
Executive Vice President |
29,937 |
2012-02-28 |
|
| 7 |
Lampton Nancy |
Director |
28,626 |
2012-01-04 |
|
| 8 |
Brady Thomas F |
Executive Vice President |
22,121 |
2009-02-27 |
|
| 9 |
Defontes Kenneth William Jr. |
Pres. & CEO, Bge; Sr. VP, Ceg |
21,140 |
2012-02-28 |
|
| 10 |
Mchugh James |
Officer |
19,249 |
2023-02-08 |
|
| 11 |
Brady James T |
Director |
18,386 |
2012-01-04 |
|
| 12 |
Brlas Laurie |
Director |
18,367 |
2025-01-03 |
|
| 13 |
Richardson John M |
Director |
15,762 |
2025-05-01 |
|
| 14 |
Barron Kathleen |
Officer |
13,883 |
2023-02-08 |
|
| 15 |
Koehler Michael |
Officer |
13,149 |
2023-02-08 |
|
| 16 |
Dardis David O. |
Officer |
12,464 |
2023-02-08 |
|
| 17 |
Bauer Matthew N |
SVP & Controller |
8,759 |
2026-01-13 |
|
| 18 |
Novotny Andrew R. |
See Remarks |
6,791 |
2026-02-11 |
|
| 19 |
Eggers Daniel L. |
Sevp, Finance and Data Economy |
5,840 |
2026-01-13 |
|
| 20 |
Hanson Bryan Craig |
EVP & Chief Generation Officer |
5,840 |
2026-01-13 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-31 |
Harrington Charles L. |
Director |
RSU Award |
130 |
- |
- |
| 2026-03-01 |
Koehler Michael |
EVP & Chief Admin Officer |
Option Exercise (Sell) |
19,405 |
- |
- |
| 2026-02-09 |
Koehler Michael |
EVP & Chief Admin Officer |
Option Exercise (Sell) |
21,274 |
- |
- |
| 2026-02-09 |
Smith Shane Patrick |
EVP & Chief Financial Officer |
Option Exercise (Sell) |
4,535 |
- |
- |
| 2026-02-09 |
Bauer Matthew N |
SVP & Controller |
Option Exercise (Sell) |
6,927 |
- |
- |
| 2026-02-09 |
Dardis David O. |
EVP & General Counsel |
Option Exercise (Sell) |
26,387 |
- |
- |
| 2026-02-09 |
Eggers Daniel L. |
EVP & CFO |
Option Exercise (Sell) |
37,931 |
- |
- |
| 2026-02-09 |
Mchugh James |
EVP & Chief Commercial Officer |
Option Exercise (Sell) |
29,439 |
- |
- |
| 2026-02-09 |
Hanson Bryan Craig |
EVP & Chief Generation Officer |
Option Exercise (Sell) |
46,176 |
- |
- |
| 2026-02-09 |
Novotny Andrew R. |
See Remarks |
RSU Award |
6,791 |
- |
- |
| 2026-02-09 |
Dominguez Joseph |
President & CEO |
Option Exercise (Sell) |
164,913 |
- |
- |
| 2026-01-07 |
Smith Shane Patrick |
EVP & Chief Financial Officer |
Unknown |
1,138 |
- |
- |
| 2026-01-09 |
Bauer Matthew N |
SVP & Controller |
RSU Award |
8,759 |
- |
- |
| 2026-01-09 |
Eggers Daniel L. |
Sevp, Finance and Data Economy |
RSU Award |
5,840 |
- |
- |
| 2026-01-09 |
Hanson Bryan Craig |
EVP & Chief Generation Officer |
RSU Award |
5,840 |
- |
- |
| 2026-01-07 |
Novotny Andrew R. |
See Remarks |
RSU Award |
298,853 |
- |
- |
| 2026-01-07 |
Novotny Andrew R. |
Officer |
Unknown |
- |
- |
- |
| 2025-12-31 |
Harrington Charles L. |
Director |
RSU Award |
103 |
- |
- |
| 2025-12-31 |
Oppenheimer Peter |
Director |
RSU Award |
44 |
- |
- |
| 2026-01-01 |
Armstrong Alan S |
Officer |
Unknown |
- |
- |
- |
| 2025-12-31 |
Lawless Robert J |
Director |
RSU Award |
230 |
- |
- |
| 2025-10-29 |
Barron Kathleen |
EVP & Chief Strategy Officer |
Option Exercise (Sell) |
23,084 |
- |
- |
| 2025-09-30 |
Harrington Charles L. |
Director |
RSU Award |
110 |
- |
- |
| 2025-09-30 |
Oppenheimer Peter |
Director |
RSU Award |
47 |
- |
- |
| 2025-09-30 |
Lawless Robert J |
Director |
RSU Award |
247 |
- |
- |
