Arun Das

CIK: 0001903997

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)7 (58.3%)

Compensation grants

Other (G, F, J, C, D, …)5 (41.7%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CABA

Cabaletta Bio, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (12 total)

CABA
Cabaletta Bio, Inc.
Mar 2, 2026
Award(A)
Stock Option (Right to Buy)
Direct
175K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
18.4K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
18.4K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
35K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
35K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
100K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
100K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
150K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
150K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
100K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
100K shares-
CABA
Cabaletta Bio, Inc.
Mar 3, 2025
Award(A)
Stock Option (Right to Buy)
Direct
115K shares-

		Type	Shares	Price		Ownership
Mar 2, 2026	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	175,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	18,416	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	18,416	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	35,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	35,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	100,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	100,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	150,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	150,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	100,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	100,000	-	-	Direct
Mar 3, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	115,000	-	-	Direct

1-12 of 12 transactions

About Das Arun

Das Arun (SEC CIK 0001903997) files insider reports with the SEC as Chief Business Officer of Cabaletta Bio, Inc. (CABA).

Signal8 holds 3 ownership filings by Das Arun, all Form 4s, filed between Mar 4, 2025 and Mar 2, 2026. Those filings report 12 transactions, from Mar 3, 2025 to Mar 2, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Das Arun's filings is in PHILADELPHIA, PA.

Recent filings by Das Arun

Mar 2, 2026: Grant or award of CABA derivative securities (Form 4, code A).
May 19, 2025: Disposition to issuer transaction of CABA derivative securities (Form 4, code D).
May 19, 2025: Grant or award of CABA derivative securities (Form 4, code A).
May 19, 2025: Disposition to issuer transaction of CABA derivative securities (Form 4, code D).
May 19, 2025: Grant or award of CABA derivative securities (Form 4, code A).

Other insiders filing for Cabaletta Bio, Inc. (CABA)

Tomasello Shawn, Director
Simon Mark, Director
HENRIQUES RICHARD C JR, Director
Bollard Catherine, Director
Brun Scott C., Director
Gerard Michael, General Counsel

How to read Form 4 transaction codes