Mika Nishimura

CIK: 0001848327

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (16.7%)

Position reduction

Option Exercises (M)1 (16.7%)

Derivative conversions

Awards (A)4 (66.7%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (2)

SIBN

SI-BONE, Inc.

Director

ARAY

ACCURAY INC

Director

Discretionary Trading P&L

Holdings

Transaction History (6 total)

SIBN
SI-BONE, Inc.
Jun 4, 2026
Award(A)
Direct
11K shares-
SIBN
SI-BONE, Inc.
Mar 12, 2026
Sale(S)
Direct
4.1K shares at avg. $13.83$57K
ARAY
ACCURAY INC
Nov 28, 2025
Award(A)
Restricted Stock Units
Direct
56.6K shares-
ARAY
ACCURAY INC
Nov 21, 2025
Exercise(M)
Direct
56.6K shares-
SIBN
SI-BONE, Inc.
Jun 5, 2025
Award(A)
Direct
8.7K shares-
ARAY
ACCURAY INC
Nov 29, 2024
Award(A)
Restricted Stock Units
Direct
56.6K shares-

		Type	Shares	Price		Ownership
Jun 4, 2026	SIBN SI-BONE, Inc.	Award(A)	10,957	-	$0	Direct
Mar 12, 2026	SIBN SI-BONE, Inc.	Sale(S)	4,100	$13.83	$56,700	Direct
Nov 28, 2025	ARAY ACCURAY INC	Award(A) Restricted Stock Units	56,603	-	-	Direct
Nov 21, 2025	ARAY ACCURAY INC	Exercise(M)	56,603	-	-	Direct
Jun 5, 2025	SIBN SI-BONE, Inc.	Award(A)	8,675	-	-	Direct
Nov 29, 2024	ARAY ACCURAY INC	Award(A) Restricted Stock Units	56,603	-	-	Direct

1-6 of 6 transactions

About Nishimura Mika

Nishimura Mika (SEC CIK 0001848327) files insider reports with the SEC as Director of SI-BONE, Inc. (SIBN) and Director of ACCURAY INC (ARAY).

Signal8 holds 6 ownership filings by Nishimura Mika, all Form 4s, filed between Dec 3, 2024 and Jun 8, 2026. Those filings report 6 transactions, from Nov 29, 2024 to Jun 4, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Nishimura Mika's filings is in SANTA CLARA, CA.

Recent filings by Nishimura Mika

Jun 4, 2026: Grant or award of SIBN shares (Form 4, code A).
Mar 12, 2026: Open-market sale of SIBN shares (Form 4, code S).
Nov 28, 2025: Grant or award of ARAY derivative securities (Form 4, code A).
Nov 21, 2025: Option exercise of ARAY shares (Form 4, code M).
Jun 5, 2025: Grant or award of SIBN shares (Form 4, code A).

Other insiders filing for SI-BONE, Inc. (SIBN)

PISETSKY MICHAEL A., SVP, Ops & Adm/Chief Legal Ofr
Maheshwari Anshul, Chief Op & Financial Officer
FRANCIS LAURA, Chief Executive Officer
DUNN JEFFREY W, Director
HILLEMAN JERYL L, Director
West Thomas A., Director

How to read Form 4 transaction codes