Tiba Aynechi

CIK: 0001669220

Transaction Breakdown

Open Market Buys (P)1 (16.7%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (66.7%)

Compensation grants

Other (G, F, J, C, D, …)1 (16.7%)

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

Companies & Roles (2)

MBX

MBX Biosciences, Inc.

Director

SPRB

SPRUCE BIOSCIENCES, INC.

Director

Discretionary Trading P&L

Holdings

Transaction History (6 total)

MBX
MBX Biosciences, Inc.
Jun 4, 2026
Award(A)
Stock option (right to buy)
Direct
12.5K shares-
SPRB
SPRUCE BIOSCIENCES, INC.
Jul 22, 2025
Award(A)
Stock Option (Right to Buy)
Direct
30K shares-
MBX
MBX Biosciences, Inc.
Jun 5, 2025
Award(A)
Stock option (right to buy)
Direct
16K shares-
MBX
MBX Biosciences, Inc.
Sep 16, 2024
Conversion(C)
Indirect
1.4M shares-
MBX
MBX Biosciences, Inc.
Sep 16, 2024
Purchase(P)
Indirect
750K shares at avg. $16.00$12.0M
MBX
MBX Biosciences, Inc.
Sep 12, 2024
Award(A)
Stock Option (Right to Buy)
Direct
16K shares-

		Type	Shares	Price		Ownership
Jun 4, 2026	MBX MBX Biosciences, Inc.	Award(A) Stock option (right to buy)	12,500	-	-	Direct
Jul 22, 2025	SPRB SPRUCE BIOSCIENCES, INC.	Award(A) Stock Option (Right to Buy)	30,000	-	-	Direct
Jun 5, 2025	MBX MBX Biosciences, Inc.	Award(A) Stock option (right to buy)	16,000	-	-	Direct
Sep 16, 2024	MBX MBX Biosciences, Inc.	Conversion(C)	1,386,335	-	$0	Indirect
Sep 16, 2024	MBX MBX Biosciences, Inc.	Purchase(P)	750,000	$16.00	$12,000,000	Indirect
Sep 12, 2024	MBX MBX Biosciences, Inc.	Award(A) Stock Option (Right to Buy)	15,963	-	-	Direct

1-6 of 6 transactions

About Aynechi Tiba

Aynechi Tiba (SEC CIK 0001669220) files insider reports with the SEC as Director of MBX Biosciences, Inc. (MBX) and Director of SPRUCE BIOSCIENCES, INC. (SPRB).

Signal8 holds 6 ownership filings by Aynechi Tiba (1 Form 3, 5 Form 4), filed between Sep 12, 2024 and Jun 5, 2026. Those filings report 6 transactions, from Sep 12, 2024 to Jun 4, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Aynechi Tiba's filings is in CARMEL, IN.

Recent filings by Aynechi Tiba

Jun 4, 2026: Grant or award of MBX derivative securities (Form 4, code A).
Jul 22, 2025: Grant or award of SPRB derivative securities (Form 4, code A).
Jun 5, 2025: Grant or award of MBX derivative securities (Form 4, code A).
Sep 16, 2024: Conversion of MBX shares (Form 4, code C).
Sep 16, 2024: Open-market purchase of MBX shares (Form 4, code P).

Other insiders filing for MBX Biosciences, Inc. (MBX)

Radovich Peter, Director
Azoulay Salomon, Chief Medical Officer
Smither John W, Chief Financial Officer
Hoerter Steven L., President and CEO
Mathers Edward T, Director
Pescovitz Ora H., Director

How to read Form 4 transaction codes