Linda C. Heller

CIK: 0001441617

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (20.0%)

Compensation grants

Other (G, F, J, C, D, …)8 (80.0%)

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 (10 total)

SLDP
Solid Power, Inc.
Sep 30, 2026
Tax Payment(F)
Direct
72.3K shares at avg. $2.27$164K
SLDP
Solid Power, Inc.
Jun 30, 2026
Tax Payment(F)
Direct
72.3K shares at avg. $2.60$188K
SLDP
Solid Power, Inc.
May 11, 2026
Tax Payment(F)
Direct
136.1K shares at avg. $3.08$419K
SLDP
Solid Power, Inc.
Apr 1, 2026
Award(A)
Direct
380.3K shares-
SLDP
Solid Power, Inc.
Mar 31, 2026
Tax Payment(F)
Direct
26.7K shares at avg. $2.82$75K
SLDP
Solid Power, Inc.
Dec 31, 2025
Tax Payment(F)
Direct
26.6K shares at avg. $4.28$114K
SLDP
Solid Power, Inc.
Sep 30, 2025
Tax Payment(F)
Direct
26.6K shares at avg. $3.52$94K
SLDP
Solid Power, Inc.
Jun 30, 2025
Tax Payment(F)
Direct
26K shares at avg. $2.15$56K
SLDP
Solid Power, Inc.
Jun 17, 2025
Tax Payment(F)
Direct
103.8K shares at avg. $1.93$200K
SLDP
Solid Power, Inc.
May 9, 2025
Award(A)
Direct
1.1M shares-

		Type	Shares	Price		Ownership
Sep 30, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	72,310	$2.27	$164,144	Direct
Jun 30, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	72,310	$2.60	$188,006	Direct
May 11, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	136,122	$3.08	$418,575	Direct
Apr 1, 2026	SLDP Solid Power, Inc.	Award(A)	380,348	-	$0	Direct
Mar 31, 2026	SLDP Solid Power, Inc.	Tax Payment(F)	26,659	$2.82	$75,178	Direct
Dec 31, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	26,605	$4.28	$113,869	Direct
Sep 30, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	26,605	$3.52	$93,650	Direct
Jun 30, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	25,950	$2.15	$55,793	Direct
Jun 17, 2025	SLDP Solid Power, Inc.	Tax Payment(F)	103,800	$1.93	$200,334	Direct
May 9, 2025	SLDP Solid Power, Inc.	Award(A)	1,113,920	-	-	Direct

1-10 of 10 transactions

About Heller Linda C.

Heller Linda C. (SEC CIK 0001441617) files insider reports with the SEC as CFO, Treasurer, & Secretary of Solid Power, Inc. (SLDP).

Signal8 holds 9 ownership filings by Heller Linda C., all Form 4s, filed between May 12, 2025 and Oct 1, 2026. Those filings report 10 transactions, from May 9, 2025 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Heller Linda C.'s filings is in LOUISVILLE, CO.

Recent filings by Heller Linda C.

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 11, 2026: Tax withholding of SLDP shares (Form 4, code F).
Apr 1, 2026: Grant or award of SLDP shares (Form 4, code A).
Mar 31, 2026: Tax withholding of SLDP shares (Form 4, code F).

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

Van Scoter John C., President & CEO
Buettner-Garrett Joshua, Chief Technology Officer
Breitweg Uwe Michael, Director
Goldberg Steven H, Director
Wright MaryAnn, Director
STEPHENS JOHN JOSEPH, Director

How to read Form 4 transaction codes