Quantumscape Corp (QS) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 7, 2026.
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- Filings shown
- 11
- Open-market buys
- 0
- Open-market sells
- 12
Counts cover the 11 most recent Form 4 filings Tradune holds for QS (filed Jul 7 – Oct 7, 2026); the score below covers only the trailing 90 days (0 buys, 9 sells). No completed check of QS's Form 4 list on SEC EDGAR is on record yet; the latest QS filing Tradune holds was filed Oct 7, 2026. This is not guaranteed to be the complete record — see QS's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 9 filings Tradune holds for QS filed Aug 20 – Oct 7, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
9 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 6 sales· 240,000 sh
- checkbox disclosed
- On filings with the box not checked
- 0 sales· 0 sh
- not proof that no plan exists
- Not comparable
- 3 sales· 54,599 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Timothy HolmeCHIEF TECHNOLOGY OFFICER | 0 | 9 | — | 294,599 | −$1,472,962 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at QS
No open-market insider purchases (Form 4 code P) were reported for QS between Jul 7, 2026 and Oct 7, 2026. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Conversion of derivative | 14,186 | — | 1,597,261 | +0.9% | Oct 5, 2026 |
| Conversion of derivative Class B Common Stock | 22,500 | — | — | — | Oct 5, 2026 |
| Conversion of derivative Class B Common Stock | 22,500 | — | — | — | Oct 5, 2026 |
| Conversion of derivative Class B Common Stock | 14,186 | — | — | — | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 22,500 | $4.54 | 0 (indirect) | −100% | Oct 5, 2026 |
| Conversion of derivative | 22,500 | — | 22,500 (indirect) | — | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 22,500 | $4.54 | 0 (indirect) | −100% | Oct 5, 2026 |
| Conversion of derivative | 22,500 | — | 22,500 (indirect) | — | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 75,000 | $4.54 | 1,522,261 | −4.7% | Oct 5, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Conversion of derivative Class B Common Stock | 22,500 | — | — | — | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 75,000 | $5.09 | 1,583,075 | −4.5% | Sep 15, 2026 |
| Conversion of derivative | 22,500 | — | 22,500 (indirect) | — | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 22,500 | $5.09 | 0 (indirect) | −100% | Sep 15, 2026 |
| Conversion of derivative | 22,500 | — | 22,500 (indirect) | — | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 22,500 | $5.09 | 0 (indirect) | −100% | Sep 15, 2026 |
| Conversion of derivative Class B Common Stock | 22,500 | — | — | — | Sep 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Conversion of derivative | 12,723 | — | — | — | Aug 21, 2026 |
| Open-market sale | 12,723 | $6.01 | — | — | Aug 21, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 20,345 | $5.76 | — | — | Aug 19, 2026 |
| Conversion of derivative | 21,531 | — | — | — | Aug 19, 2026 |
| Open-market sale | 21,531 | $5.76 | — | — | Aug 19, 2026 |
| Tax withholding | 34,086 | $5.74 | — | — | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 32,255 | $5.74 | — | — | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 31,095 | $5.74 | — | — | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 34,304 | $5.74 | — | — | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 81,752 | $5.74 | — | — | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 25,709 | $5.74 | — | — | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Conversion of derivative | 34,254 | — | 34,254 (indirect) | — | Jul 2, 2026 |
| Conversion of derivative | 102,991 | — | 1,815,497 | +6.0% | Jul 2, 2026 |
| Open-market sale 10b5-1 box checked | 102,991 | $7.28 | 1,712,506 | −5.7% | Jul 2, 2026 |
| Conversion of derivative Class B Common Stock | 34,254 | — | — | — | Jul 2, 2026 |
| Conversion of derivative Class B Common Stock | 102,991 | — | — | — | Jul 2, 2026 |
| Open-market sale 10b5-1 box checked | 34,254 | $7.28 | 0 (indirect) | −100% | Jul 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 9,800 | $7.28 | 1,816,257 | −0.5% | Jul 2, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to QS's (Oct 7, 2026).
Frequently asked about QS insider activity
How many insiders bought QS stock in these Form 4 filings?
No open-market purchases (Form 4 code P) of QS shares were reported by Quantumscape Corp insiders between Jul 7, 2026 and Oct 7, 2026. The 11 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for QS?
The most recent Form 4 on this page was filed by Timothy Holme (CHIEF TECHNOLOGY OFFICER) on Oct 7, 2026, reporting 9 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market QS insider sale shown?
The largest open-market sale among the filings shown was 102,991 QS shares at $7.28 (about $750,083) by Timothy Holme (CHIEF TECHNOLOGY OFFICER) on Jul 2, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track QS insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.