Steven Nichtberger

CIK: 0001487989

Transaction Breakdown

Open Market Buys (P)1 (6.7%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)8 (53.3%)

Compensation grants

Other (G, F, J, C, D, …)6 (40.0%)

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

Companies & Roles (1)

CABA

Cabaletta Bio, Inc.

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (15 total)

CABA
Cabaletta Bio, Inc.
Mar 2, 2026
Award(A)
Stock Option (Right to Buy)
Direct
674K shares-
CABA
Cabaletta Bio, Inc.
Jan 21, 2026
Purchase(P)
Direct
45K shares at avg. $2.24$101K
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
99.7K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
300K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
300K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
333.5K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
333.5K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
380K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
380K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
411.6K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
411.6K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
353K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
353K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
99.7K shares-
CABA
Cabaletta Bio, Inc.
Mar 3, 2025
Award(A)
Stock Option (Right to Buy)
Direct
450K shares-

		Type	Shares	Price		Ownership
Mar 2, 2026	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	674,000	-	-	Direct
Jan 21, 2026	CABA Cabaletta Bio, Inc.	Purchase(P)	45,000	$2.24	$100,778	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	99,714	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	300,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	300,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	333,500	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	333,500	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	380,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	380,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	411,600	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	411,600	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	353,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	353,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	99,714	-	-	Direct
Mar 3, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	450,000	-	-	Direct

1-15 of 15 transactions

About Nichtberger Steven

Nichtberger Steven (SEC CIK 0001487989) files insider reports with the SEC as President & CEO of Cabaletta Bio, Inc. (CABA).

Signal8 holds 4 ownership filings by Nichtberger Steven, all Form 4s, filed between Mar 4, 2025 and Mar 2, 2026. Those filings report 15 transactions, from Mar 3, 2025 to Mar 2, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Nichtberger Steven's filings is in PHILADELPHIA, PA.

Recent filings by Nichtberger Steven

Mar 2, 2026: Grant or award of CABA derivative securities (Form 4, code A).
Jan 21, 2026: Open-market purchase of CABA shares (Form 4, code P).
May 19, 2025: Disposition to issuer transactions of CABA derivative securities (2 lines, 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).

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
Das Arun, Chief Business Officer

How to read Form 4 transaction codes