Axsome Therapeutics, Inc. (AXSM) has 15 known insider and institutional holders on record. The largest holder is Antecip Capital LLC with 7,344,500 shares. Other notable holders include Golubieski John and JEFFS ROGER.
Over the last 12 months, insiders have made 53 transactions in AXSM stock — 9 buys (valued at $101.76K) and 36 sells (valued at $109.54M). Insider selling has exceeded buying during this period.
AXSM Insider Ownership
Top Holder
Antecip Capital LLC
7,344,500 shares
Buys (12 mo)
9
$101.76K value
Sells (12 mo)
36
$109.54M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Antecip Capital Llc |
10 Percent Owner |
7,344,500 |
2015-11-19 |
|
| 2 |
Golubieski John |
Chief Financial Officer |
132,000 |
2017-08-08 |
|
| 3 |
Jeffs Roger |
Director |
57,510 |
2025-09-02 |
|
| 4 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
54,623 |
2026-02-27 |
|
| 5 |
Coleman Mark |
Director |
47,140 |
2026-02-27 |
|
| 6 |
Ames Constance |
Vice President, Finance |
25,000 |
2017-03-17 |
|
| 7 |
Pizzie Nick |
Chief Financial Officer |
18,570 |
2026-02-27 |
|
| 8 |
Marek David C |
Chief Commercial Officer |
16,533 |
2020-03-19 |
|
| 9 |
Maizel Ari |
Chief Commercial Officer |
16,385 |
2026-02-27 |
|
| 10 |
Murdock Hunter R. |
General Counsel |
16,385 |
2026-02-27 |
|
| 11 |
Potter Myrtle S |
Director |
13,000 |
2019-06-10 |
|
| 12 |
Kaye Randall |
Chief Medical Officer |
6,022 |
2015-12-24 |
|
| 13 |
Jacobson Mark L. |
Chief Operating Officer |
5,783 |
2025-05-28 |
|
| 14 |
Saad Mark E |
Director |
1,429 |
2025-06-10 |
|
| 15 |
Mahony Susan |
Director |
1,429 |
2025-06-10 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-02-26 |
Maizel Ari |
Chief Commercial Officer |
RSU Award |
16,385 |
- |
- |
| 2026-02-26 |
Murdock Hunter R. |
General Counsel |
RSU Award |
16,385 |
- |
- |
| 2026-02-26 |
Jacobson Mark L. |
Chief Operating Officer |
Informative Sell |
35,378 |
$161.88 |
$5.73M |
| 2026-02-26 |
Pizzie Nick |
Chief Financial Officer |
RSU Award |
18,570 |
- |
- |
| 2026-02-26 |
Coleman Mark |
Director |
Informative Sell |
25,000 |
$161.11 |
$4.03M |
| 2026-02-26 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
RSU Award |
54,623 |
- |
- |
| 2026-02-23 |
Coleman Mark |
Director |
Option Exercise (Sell) |
6,250 |
$4.95 |
$30.94K |
| 2026-02-20 |
Coleman Mark |
Director |
Option Exercise (Sell) |
12,485 |
$4.95 |
$61.8K |
| 2026-02-10 |
Coleman Mark |
Director |
Option Exercise (Sell) |
5,193 |
$8.02 |
$41.65K |
| 2026-02-02 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Option Exercise (Sell) |
32,410 |
$185.60 |
$6.02M |
| 2026-01-21 |
Maizel Ari |
Chief Commercial Officer |
Informative Sell |
7,500 |
$184.44 |
$1.38M |
| 2026-01-22 |
Pizzie Nick |
Chief Financial Officer |
Informative Sell |
12,000 |
$187.92 |
$2.26M |
| 2026-01-07 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
31,261 |
$170.38 |
$5.33M |
| 2026-01-06 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
29,450 |
$172.33 |
$5.08M |
| 2026-01-05 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
78,703 |
$171.28 |
$13.48M |
| 2025-12-31 |
Saad Mark E |
Director |
Option Exercise (Sell) |
6,231 |
$8.02 |
$49.97K |
| 2025-12-04 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
10,558 |
$148.18 |
$1.56M |
| 2025-12-03 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
20,163 |
$146.94 |
$2.96M |
| 2025-12-02 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
49,252 |
$144.59 |
$7.12M |
| 2025-11-05 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
21,775 |
$134.49 |
$2.93M |
| 2025-11-04 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
50,459 |
$133.79 |
$6.75M |
| 2025-11-03 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
91,705 |
$132.34 |
$12.14M |
| 2025-10-08 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
12,774 |
$118.84 |
$1.52M |
| 2025-10-07 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
13,390 |
$118.77 |
$1.59M |
| 2025-10-06 |
Tabuteau Herriot |
10 Percent Owner, Officer: Chief Executive Officer |
Informative Sell |
19,220 |
$120.17 |
$2.31M |
