Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Solid Power, Inc.SLDP · Entity 5427 | CFO, Treasurer, & Secretary | September 30, 2026 | October 02, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Solid Power, Inc.
Report date September 30, 2026 · Filed October 02, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 1,876,534 |
Reported balance
After 2026-09-30 transaction · row 1
1 source rowRow 1 · 2026-09-30 · Tax withholding · Disposed 72,310 · Balance 1,876,534 F1: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 30, 2026 Filed Oct 2, 2026 00:54 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 72,310 | $2.27 | $164,143.70 |
DisclosureSEC source: 0001844862-26-000025 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,876,534 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| June 30, 2026 Filed Jul 1, 2026 21:10 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 72,310 | $2.60 | $188,006.00 |
DisclosureSEC source: 0001844862-26-000021 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,948,844 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| May 11, 2026 Filed May 12, 2026 21:28 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 136,122 | $3.08 | $418,575.15 |
DisclosureSEC source: 0001844862-26-000008 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,021,154 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| April 01, 2026 Filed Apr 2, 2026 22:09 UTC | Solid Power, Inc. SLDP · Entity 5427 | GrantCommon Stock | 380,348 | $0.00 | $0.00 |
DisclosureSEC source: 0001844862-26-000005 · primary_doc.xml · nonDerivative · entry 2 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,157,276 F2 · shares: Each restricted stock unit represents a contingent right to receive one share of the underlying common stock of the Issuer. The restricted stock units will vest in 16 equal quarterly installments commencing on June 30, 2026, and thereafter at the end of each fiscal quarter of the Issuer, subject to the reporting person continuing to be a service provider (as defined in the Solid Power, Inc. 2021 Equity Incentive Plan) through the applicable vesting date. Read SEC document |
| March 31, 2026 Filed Apr 2, 2026 22:09 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 26,659 | $2.82 | $75,178.38 |
DisclosureSEC source: 0001844862-26-000005 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,776,928 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| December 31, 2025 Filed Jan 5, 2026 21:27 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 26,605 | $4.28 | $113,869.40 |
DisclosureSEC source: 0001844862-26-000002 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,803,587 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| September 30, 2025 Filed Oct 2, 2025 01:10 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 26,605 | $3.52 | $93,649.60 |
DisclosureSEC source: 0001844862-25-000007 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,830,192 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| June 30, 2025 Filed Jul 1, 2025 20:52 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 25,950 | $2.15 | $55,792.50 |
DisclosureSEC source: 0001844862-25-000004 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,856,797 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| June 17, 2025 Filed Jun 18, 2025 20:43 UTC | Solid Power, Inc. SLDP · Entity 5427 | Tax withholdingCommon Stock | 103,800 | $1.93 | $200,334.00 |
DisclosureSEC source: 0001441617-25-000004 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO, Treasurer, & Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,882,747 F1 · shares: Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units. Read SEC document |
| May 09, 2025 Filed May 12, 2025 21:18 UTC | Solid Power, Inc. SLDP · Entity 5427 | GrantCommon Stock | 1,113,920 | $0.00 | $0.00 |
DisclosureSEC source: 0001441617-25-000002 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO & Treasurer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,986,547 F1 · shares: Each restricted stock unit represents a contingent right to receive one share of the underlying common stock of the Issuer. The restricted stock units will vest as to 25% of the granted number on May 9, 2026, and the remaining 75% of the granted number will vest in 12 equal quarterly installments commencing on June 30, 2026, and thereafter at the end of each fiscal quarter of the Issuer, subject to the reporting person continuing to be a service provider (as defined in the Solid Power, Inc. 2021 Equity Incentive Plan) through the applicable vesting date. Read SEC document |
| June 17, 2024 Filed Jun 19, 2024 00:41 UTC | Solid Power, Inc. SLDP · Entity 5427 | GrantStock Option (Right to Buy) · Derivative | 1,757,960 | $0.00 Strike: $1.67 | $0.00 |
DisclosureSEC source: 0001441617-24-000003 · primary_doc.xml · derivative · entry 2 Heller Linda C. · CIK 0001441617 · CFO & Treasurer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,757,960 Underlying: Common Stock · 1,757,960 shares Expires 2034-06-17 F2 · derivative.exercise_date: The stock option will vest as to 25% of the shares of the Issuer's common stock underlying the grant on June 17, 2025, and will vest as to the remaining 75% of the shares underlying the grant in 12 equal quarterly installments commencing on June 30, 2025, and thereafter at the end of each fiscal quarter of the Issuer, subject to the reporting person continuing to be a service provider (as defined in the Solid Power, Inc. 2021 Equity Incentive Plan) through the applicable vesting date. Read SEC document |
| June 17, 2024 Filed Jun 19, 2024 00:41 UTC | Solid Power, Inc. SLDP · Entity 5427 | GrantCommon Stock | 872,627 | $0.00 | $0.00 |
DisclosureSEC source: 0001441617-24-000003 · primary_doc.xml · nonDerivative · entry 1 Heller Linda C. · CIK 0001441617 · CFO & Treasurer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 872,627 F1 · shares: Each restricted stock unit represents a contingent right to receive one share of the underlying common stock of the Issuer. The restricted stock units will vest as to 25% of the granted number on June 17, 2025, and the remaining 75% of the granted number will vest in 12 equal quarterly installments commencing on June 30, 2025, and thereafter at the end of each fiscal quarter of the Issuer, subject to the reporting person continuing to be a service provider (as defined in the Solid Power, Inc. 2021 Equity Incentive Plan) through the applicable vesting date. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.