Chang David J.
Chief Medical Officer
PurchaseAlert
- Shares
- 8,800
- Price
- $2.26
- Value
- $19,888
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•21 filings
CABA
Cabaletta Bio, Inc.
No net buying or selling imbalance over the last 3 months
No net buyers or sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found 1 CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
$0.00
0 buyers · 0 sellers
12-month purchases
$296,189
8 distinct insiders
12-month sales
$0.00
0 distinct insiders
Highlighted alerts
8
0 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
1 executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
20
Raw transactions
Everything returned by the filing
8
Voluntary view
P/S trades after deterministic checks
12
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- A
- Shares
- 22,000
- Price
- $0.00
- Footnotes
- 1
This option shall vest in full upon the earlier of (i) June 9, 2027 or (ii) the date of the next annual meeting of the Corporation's stockholders.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Binder Gwendolyn
President, Science & Tech.
PurchaseAlert
- Shares
- 11,312
- Price
- $2.19
- Value
- $24,763
Tomasello Shawn
Director
PurchaseAlert
- Shares
- 22,725
- Price
- $2.21
- Value
- $50,322
Gavel Steve
Chief Commercial Officer
PurchaseAlert
- Shares
- 22,170
- Price
- $2.27
- Value
- $50,215
Bollard Catherine
Director
PurchaseAlert
- Shares
- 4,405
- Price
- $2.27
- Value
- $9,982
Nichtberger Steven
President & CEO
PurchaseAlert
- Shares
- 45,000
- Price
- $2.24
- Value
- $100,778
Simon Mark
Director
PurchaseAlert
- Shares
- 11,061
- Price
- $2.28
- Value
- $25,261
Gerard Michael
General Counsel
PurchaseAlert
- Shares
- 6,600
- Price
- $2.27
- Value
- $14,979
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Jan 21, 2026 | Chang David J. Chief Medical Officer | Purchase | 8,800 | $2.26 | $19,888 | |
| Jan 21, 2026 | Binder Gwendolyn President, Science & Tech. | Purchase | 11,312 | $2.19 | $24,763 | |
| Jan 21, 2026 | Tomasello Shawn Director | Purchase | 22,725 | $2.21 | $50,322 | |
| Jan 21, 2026 | Gavel Steve Chief Commercial Officer | Purchase | 22,170 | $2.27 | $50,215 | |
| Jan 21, 2026 | Bollard Catherine Director | Purchase | 4,405 | $2.27 | $9,982 | |
| Jan 21, 2026 | Nichtberger Steven President & CEO | Purchase | 45,000 | $2.24 | $100,778 | |
| Jan 21, 2026 | Simon Mark Director | Purchase | 11,061 | $2.28 | $25,261 | |
| Jan 21, 2026 | Gerard Michael General Counsel | Purchase | 6,600 | $2.27 | $14,979 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.