Cabaletta Bio, Inc. (CABA) has 15 known insider and institutional holders on record. The largest holder is Nichtberger Steven with 674,000 shares. Other notable holders include 5AM Ventures V, L.P. and Chang David J..
Over the last 12 months, insiders have made 32 transactions in CABA stock — 20 buys (valued at $6.85M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
CABA Insider Ownership
Top Holder
Nichtberger Steven
674,000 shares
Buys (12 mo)
20
$6.85M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Nichtberger Steven |
President & CEO |
674,000 |
2026-03-02 |
|
| 2 |
5am Ventures V, L.p. |
10 Percent Owner |
333,144 |
2021-11-03 |
|
| 3 |
Chang David J. |
Chief Medical Officer |
225,000 |
2026-03-02 |
|
| 4 |
Binder Gwendolyn |
President, Science & Tech. |
225,000 |
2026-03-02 |
|
| 5 |
Marda Anup |
Chief Financial Officer |
225,000 |
2026-03-02 |
|
| 6 |
Das Arun |
Chief Business Officer |
175,000 |
2026-03-02 |
|
| 7 |
Gerard Michael |
General Counsel |
175,000 |
2026-03-02 |
|
| 8 |
Simon Mark |
Director |
147,205 |
2026-01-21 |
|
| 9 |
Stalter John Brian |
General Counsel |
64,500 |
2021-03-02 |
|
| 10 |
Tomasello Shawn |
Director |
22,725 |
2026-01-21 |
|
| 11 |
Gavel Steve |
Chief Commercial Officer |
22,170 |
2026-01-21 |
|
| 12 |
Henriques Richard C Jr |
Director |
22,000 |
2025-06-09 |
|
| 13 |
Brun Scott C. |
Director |
22,000 |
2025-06-09 |
|
| 14 |
Daniels Brian |
Director |
22,000 |
2021-06-03 |
|
| 15 |
Bollard Catherine |
Director |
5,405 |
2026-01-21 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-02 |
Das Arun |
Chief Business Officer |
RSU Award |
175,000 |
$3.30 |
$577.5K |
| 2026-03-02 |
Gerard Michael |
General Counsel |
RSU Award |
175,000 |
$3.30 |
$577.5K |
| 2026-03-02 |
Binder Gwendolyn |
President, Science & Tech. |
RSU Award |
225,000 |
$3.30 |
$742.5K |
| 2026-03-02 |
Chang David J. |
Chief Medical Officer |
RSU Award |
225,000 |
$3.30 |
$742.5K |
| 2026-03-02 |
Marda Anup |
Chief Financial Officer |
RSU Award |
225,000 |
$3.30 |
$742.5K |
| 2026-03-02 |
Nichtberger Steven |
President & CEO |
RSU Award |
674,000 |
$3.30 |
$2.22M |
| 2026-01-21 |
Gavel Steve |
Chief Commercial Officer |
Informative Buy |
22,170 |
$2.27 |
$50.22K |
| 2026-01-21 |
Gerard Michael |
General Counsel |
Informative Buy |
6,600 |
$2.27 |
$14.98K |
| 2026-01-21 |
Binder Gwendolyn |
President, Science & Tech. |
Informative Buy |
11,312 |
$2.19 |
$24.76K |
| 2026-01-21 |
Chang David J. |
Chief Medical Officer |
Informative Buy |
8,800 |
$2.26 |
$19.89K |
| 2026-01-21 |
Bollard Catherine |
Director |
Informative Buy |
4,405 |
$2.27 |
$9.98K |
| 2026-01-21 |
Tomasello Shawn |
Director |
Informative Buy |
22,725 |
$2.21 |
$50.32K |
| 2026-01-21 |
Nichtberger Steven |
President & CEO |
Informative Buy |
45,000 |
$2.24 |
$100.78K |
| 2026-01-21 |
Simon Mark |
Director |
Informative Buy |
11,061 |
$2.28 |
$25.26K |
| 2025-10-13 |
Gavel Steve |
Chief Commercial Officer |
RSU Award |
275,000 |
$2.49 |
$684.75K |
| 2025-10-13 |
Gavel Steve |
Officer |
Unknown |
- |
- |
- |
| 2025-06-09 |
Brun Scott C. |
Director |
RSU Award |
22,000 |
$2.37 |
$52.14K |
| 2025-06-09 |
Bollard Catherine |
Director |
RSU Award |
22,000 |
$2.37 |
$52.14K |
| 2025-06-09 |
Tomasello Shawn |
Director |
RSU Award |
22,000 |
$2.37 |
$52.14K |
| 2025-06-09 |
Simon Mark |
Director |
RSU Award |
22,000 |
$2.37 |
$52.14K |
| 2025-06-09 |
Henriques Richard C Jr |
Director |
RSU Award |
22,000 |
$2.37 |
$52.14K |
| 2025-05-19 |
Das Arun |
Chief Business Officer |
Return of Shares |
150,000 |
$11.09 |
$1.66M |
| 2025-05-19 |
Gerard Michael |
General Counsel |
Return of Shares |
75,000 |
$3.21 |
$240.75K |
| 2025-05-19 |
Brun Scott C. |
Director |
Return of Shares |
22,000 |
$10.01 |
$220.22K |
| 2025-05-19 |
Binder Gwendolyn |
President, Science & Tech. |
Return of Shares |
130,000 |
$23.97 |
$3.12M |
