Josef H. Von Rickenbach

CIK: 0001007706

Transaction Breakdown

Open Market Buys (P)4 (66.7%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (33.3%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (1)

ALRN

Aileron Therapeutics, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (6 total)

RNTX
Rein Therapeutics, Inc.
May 27, 2026
Purchase(P)
Direct
4.5K shares at avg. $1.07$5K
RNTX
Rein Therapeutics, Inc.
May 26, 2026
Purchase(P)
Direct
23.2K shares at avg. $1.06$24K
RNTX
Rein Therapeutics, Inc.
May 22, 2026
Purchase(P)
Direct
16K shares at avg. $1.05$17K
RNTX
Rein Therapeutics, Inc.
May 21, 2026
Purchase(P)
Direct
3.4K shares at avg. $1.04$4K
RNTX
Rein Therapeutics, Inc.
Jul 23, 2025
Award(A)
Stock Option (right to buy)
Direct
17.5K shares-
ALRN
Aileron Therapeutics, Inc.
Dec 2, 2024
Award(A)
Stock Option (right to buy)
Direct
35K shares-

		Type	Shares	Price		Ownership
May 27, 2026	RNTX Rein Therapeutics, Inc.	Purchase(P)	4,500	$1.07	$4,819	Direct
May 26, 2026	RNTX Rein Therapeutics, Inc.	Purchase(P)	23,190	$1.06	$24,470	Direct
May 22, 2026	RNTX Rein Therapeutics, Inc.	Purchase(P)	15,950	$1.05	$16,708	Direct
May 21, 2026	RNTX Rein Therapeutics, Inc.	Purchase(P)	3,420	$1.04	$3,564	Direct
Jul 23, 2025	RNTX Rein Therapeutics, Inc.	Award(A) Stock Option (right to buy)	17,500	-	-	Direct
Dec 2, 2024	ALRN Aileron Therapeutics, Inc.	Award(A) Stock Option (right to buy)	35,000	-	-	Direct

1-6 of 6 transactions

About VON RICKENBACH JOSEF H

VON RICKENBACH JOSEF H (SEC CIK 0001007706) files insider reports with the SEC as Director of Aileron Therapeutics, Inc. (ALRN).

Signal8 holds 3 ownership filings by VON RICKENBACH JOSEF H, all Form 4s, filed between Dec 6, 2024 and May 28, 2026. Those filings report 6 transactions, from Dec 2, 2024 to May 27, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on VON RICKENBACH JOSEF H's filings is in AUSTIN, TX.

Recent filings by VON RICKENBACH JOSEF H

May 27, 2026: Open-market purchase of RNTX shares (Form 4, code P).
May 26, 2026: Open-market purchase of RNTX shares (Form 4, code P).
May 22, 2026: Open-market purchase of RNTX shares (Form 4, code P).
May 21, 2026: Open-market purchase of RNTX shares (Form 4, code P).
Jul 23, 2025: Grant or award of RNTX derivative securities (Form 4, code A).

Other insiders filing for Aileron Therapeutics, Inc. (ALRN)

WINDSOR JAMES BRIAN, President and CEO
Aivado Manuel, Director
Musso Alan A, Director
Fairey William, Director
Ambros Reinhard J., Director

How to read Form 4 transaction codes