Joshua Buettner-Garrett

CIK: 0001880162

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)7 (24.1%)

Position reduction

Option Exercises (M)7 (24.1%)

Derivative conversions

Awards (A)2 (6.9%)

Compensation grants

Other (G, F, J, C, D, …)13 (44.8%)

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

Companies & Roles (1)

SLDP

Solid Power, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (29 total)

SLDP
Solid Power, Inc.
Sep 30, 2026
Tax Payment(F)
Direct
33.8K shares at avg. $2.27$77K
SLDP
Solid Power, Inc.
Jun 30, 2026
Tax Payment(F)
Direct
33.8K shares at avg. $2.60$88K
SLDP
Solid Power, Inc.
May 12, 2026
Tax Payment(F)
Direct
5.5K shares at avg. $3.15$17K
SLDP
Solid Power, Inc.
May 11, 2026
Tax Payment(F)
Direct
58.1K shares at avg. $3.08$179K
SLDP
Solid Power, Inc.
Apr 1, 2026
Award(A)
Direct
183.5K shares-
SLDP
Solid Power, Inc.
Mar 31, 2026
Tax Payment(F)
Direct
14.3K shares at avg. $2.82$40K
SLDP
Solid Power, Inc.
Dec 31, 2025
Tax Payment(F)
Direct
14.3K shares at avg. $4.28$61K
SLDP
Solid Power, Inc.
Sep 30, 2025
Tax Payment(F)
Direct
14.3K shares at avg. $3.52$50K
SLDP
Solid Power, Inc.
Jun 30, 2025
Tax Payment(F)
Direct
14.3K shares at avg. $2.15$31K
SLDP
Solid Power, Inc.
May 12, 2025
Tax Payment(F)
Direct
5.5K shares at avg. $1.30$7K
SLDP
Solid Power, Inc.
May 9, 2025
Award(A)
Direct
531K shares-
SLDP
Solid Power, Inc.
Mar 31, 2025
Tax Payment(F)
Direct
14.3K shares at avg. $1.08$15K
SLDP
Solid Power, Inc.
Mar 22, 2025
Tax Payment(F)
Direct
39.5K shares at avg. $1.11$44K
SLDP
Solid Power, Inc.
Mar 6, 2025
Sale(S)
Direct
187.5K shares at avg. $1.13$212K
SLDP
Solid Power, Inc.
Mar 6, 2025
Exercise(M)
Direct
187.5K shares at avg. $0.03$6K
SLDP
Solid Power, Inc.
Feb 10, 2025
Sale(S)
Direct
187.5K shares at avg. $1.31$246K
SLDP
Solid Power, Inc.
Feb 10, 2025
Exercise(M)
Direct
187.5K shares at avg. $0.03$6K
SLDP
Solid Power, Inc.
Jan 6, 2025
Exercise(M)
Direct
187.5K shares at avg. $0.03$6K
SLDP
Solid Power, Inc.
Jan 6, 2025
Sale(S)
Direct
187.5K shares at avg. $2.09$392K
SLDP
Solid Power, Inc.
Dec 31, 2024
Tax Payment(F)
Direct
4.4K shares at avg. $2.14$9K
SLDP
Solid Power, Inc.
Dec 16, 2024
Exercise(M)
Direct
187.5K shares at avg. $0.03$6K
SLDP
Solid Power, Inc.
Dec 16, 2024
Sale(S)
Direct
187.5K shares at avg. $1.07$201K
SLDP
Solid Power, Inc.
Nov 12, 2024
Sale(S)
Direct
187.5K shares at avg. $1.07$201K
SLDP
Solid Power, Inc.
Nov 12, 2024
Exercise(M)
Direct
187.5K shares at avg. $0.03$6K
SLDP
Solid Power, Inc.
Oct 7, 2024
Exercise(M)
Direct
187.5K shares at avg. $0.03$6K

		Type	Shares	Price		Ownership
Sep 30, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	33,824	$2.27	$76,780	Direct
Jun 30, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	33,824	$2.60	$87,942	Direct
May 12, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	5,519	$3.15	$17,385	Direct
May 11, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	58,082	$3.08	$178,602	Direct
Apr 1, 2026	SLDP Solid Power, Inc.	Award(A)	183,518	-	$0	Direct
Mar 31, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	14,284	$2.82	$40,281	Direct
Dec 31, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	14,284	$4.28	$61,136	Direct
Sep 30, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	14,284	$3.52	$50,280	Direct
Jun 30, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	14,285	$2.15	$30,713	Direct
May 12, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	5,520	$1.30	$7,176	Direct
May 9, 2025	SLDP Solid Power, Inc.	Award(A)	531,034	-	-	Direct
Mar 31, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	14,285	$1.08	$15,428	Direct
Mar 22, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	39,471	$1.11	$43,813	Direct
Mar 6, 2025	SLDP Solid Power, Inc.	Sale(S)	187,500	$1.13	$211,556	Direct
Mar 6, 2025	SLDP Solid Power, Inc.	Exercise(M)	187,500	$0.03	$5,625	Direct
Feb 10, 2025	SLDP Solid Power, Inc.	Sale(S)	187,500	$1.31	$246,413	Direct
Feb 10, 2025	SLDP Solid Power, Inc.	Exercise(M)	187,500	$0.03	$5,625	Direct
Jan 6, 2025	SLDP Solid Power, Inc.	Exercise(M)	187,500	$0.03	$5,625	Direct
Jan 6, 2025	SLDP Solid Power, Inc.	Sale(S)	187,500	$2.09	$392,288	Direct
Dec 31, 2024	SLDP Solid Power, Inc.	Tax Payment(F)	4,416	$2.14	$9,450	Direct
Dec 16, 2024	SLDP Solid Power, Inc.	Exercise(M)	187,500	$0.03	$5,625	Direct
Dec 16, 2024	SLDP Solid Power, Inc.	Sale(S)	187,500	$1.07	$201,413	Direct
Nov 12, 2024	SLDP Solid Power, Inc.	Sale(S)	187,500	$1.07	$201,394	Direct
Nov 12, 2024	SLDP Solid Power, Inc.	Exercise(M)	187,500	$0.03	$5,625	Direct
Oct 7, 2024	SLDP Solid Power, Inc.	Exercise(M)	187,500	$0.03	$5,625	Direct

1-25 of 29 transactions

About Buettner-Garrett Joshua

Buettner-Garrett Joshua (SEC CIK 0001880162) files insider reports with the SEC as Chief Technology Officer of Solid Power, Inc. (SLDP).

Signal8 holds 21 ownership filings by Buettner-Garrett Joshua, all Form 4s, filed between Sep 11, 2024 and Oct 1, 2026. Those filings report 29 transactions, from Sep 10, 2024 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Buettner-Garrett Joshua's filings is in LOUISVILLE, CO.

Recent filings by Buettner-Garrett Joshua

Sep 30, 2026: Tax withholding of SLDP shares (Form 4, code F).
Jun 30, 2026: Tax withholding of SLDP shares (Form 4, code F).
May 12, 2026: Tax withholding of SLDP shares (Form 4, code F).
May 11, 2026: Tax withholding of SLDP shares (Form 4, code F).
Apr 1, 2026: Grant or award of SLDP shares (Form 4, code A).

Other insiders filing for Solid Power, Inc. (SLDP)

Van Scoter John C., President & CEO
Heller Linda C., CFO, Treasurer, & Secretary
Breitweg Uwe Michael, Director
Goldberg Steven H, Director
Wright MaryAnn, Director
STEPHENS JOHN JOSEPH, Director

How to read Form 4 transaction codes