Quick Takeaways
- Kronos Bio, Inc. has 20 insiders with reported activity on this page.
- Net insider value flow over the last year: -$21,554.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
Insider Transactions Reported by 20 Insiders of Kronos Bio, Inc.
- Location
- San Mateo, CA
What Changed
- Buy value: ; sell value: $21,554.
- Net share flow: -24,838.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$21,554.
Buys
$0
Shares: 0
Insiders: 0
Sells
$21,554
Shares: 24,838
Insiders: 1
Net
-$21,554
Shares: -24,838
Insiders: -1
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 24,838 | $0 | $21,554 | -$21,554 |
Kronos Bio, Inc. executives and other stock owners filed with the SEC include:
Top shareholders of Kronos Bio, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Barbara Kosacz |
3/4/5
|
COO & General Counsel |
—
mixed-class rows
|
1,137,333
mixed-class rows
|
$1,099,524 | — | 04 Jan 2024 | |
| B. al Wakeel |
3/4/5
|
Chief Financial Officer |
—
class O/S missing
|
346,102
|
$409,646 | — | 06 Jul 2023 | |
| Jorge DiMartino |
3/4/5
|
Chief Medical Officer & VP |
—
class O/S missing
|
315,246
|
$373,125 | — | 04 Jan 2024 | |
| Christopher Dinsmore |
3/4/5
|
Chief Scientific Officer |
—
class O/S missing
|
260,969
|
$308,883 | — | 04 Jan 2024 | |
| Charles Y. Lin |
3/4/5
|
Chief Scientific Officer |
—
mixed-class rows
|
307,503
mixed-class rows
|
$247,248 | — | 15 Oct 2024 | |
| Allison Frisbee |
3/4/5
|
Chief Administrative Officer |
—
mixed-class rows
|
277,410
mixed-class rows
|
$215,533 | — | 15 Oct 2024 | |
| Elizabeth A. Olek |
3/4/5
|
SR VP, CLINICAL SCIENCE |
—
class O/S missing
|
193,275
|
$203,693 | — | 21 Feb 2024 | |
| Marianne de Backer |
3/4/5
|
Director |
—
class O/S missing
|
34,000
|
— | — | 22 Jun 2023 | |
| Otello Stampacchia |
3/4/5
|
Director |
—
class O/S missing
|
34,000
|
— | — | 22 Jun 2022 |
Recent Insider Transactions by Companies or Individuals for Kronos Bio, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Arie Belldegrun | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -679,575 | 0 | 20 Jun 2025 | By Bellco Legacy II Trust | ||
| Arie Belldegrun | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -2,765,314 | 0 | 20 Jun 2025 | By Vida Ventures, LLC | ||
| Arie Belldegrun | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -122,600 | 0 | 20 Jun 2025 | Direct | ||
| Norbert W. Bischofberger | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -11,857,138 | 0 | 20 Jun 2025 | See Footnote | ||
| Norbert W. Bischofberger | KRON | Employee Stock Option (Right to Buy) | Disposed to Issuer | -100% | -1,967,854 | 0 | 20 Jun 2025 | Direct | ||
| Elena Ridloff | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -25,296 | 0 | 20 Jun 2025 | Direct | ||
| Elena Ridloff | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -136,200 | 0 | 20 Jun 2025 | Direct | ||
| David M. Tanen | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -26,375 | 0 | 20 Jun 2025 | By Daughter | ||
| David M. Tanen | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -52,750 | 0 | 20 Jun 2025 | By Son | ||
| David M. Tanen | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -471,230 | 0 | 20 Jun 2025 | See Footnote | ||
| David M. Tanen | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -363,428 | 0 | 20 Jun 2025 | Direct | ||
| David M. Tanen | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -228,100 | 0 | 20 Jun 2025 | Direct | ||
| Roshawn A. Blunt | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -143,200 | 0 | 20 Jun 2025 | Direct | ||
| Taiyin Yang | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -11,333 | 0 | 20 Jun 2025 | Direct | ||
| Taiyin Yang | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -131,350 | 0 | 20 Jun 2025 | Direct | ||
| Joshua A. Kazam | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -94,481 | 0 | 20 Jun 2025 | Direct | ||
| Joshua A. Kazam | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -122,600 | 0 | 20 Jun 2025 | Direct | ||
| Katherine V Stultz | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -109,079 | 0 | 20 Jun 2025 | Direct | ||
| Roger D. Dansey | KRON | Stock Option (Right to Buy) | Disposed to Issuer | -100% | -107,868 | 0 | 20 Jun 2025 | Direct | ||
| Deborah Knobelman | KRON | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -139,422 | 0 | 20 Jun 2025 | Direct | ||
| Deborah Knobelman | KRON | Employee Stock Option (Right to Buy) | Disposed to Issuer | -100% | -246,390 | 0 | 20 Jun 2025 | Direct | ||
| Deborah Knobelman | KRON | Common Stock | Sale | -15.1% | $21,554 | $0.8678 | -24,838 | 139,422 | 05 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.