Company profile
Xilio Therapeutics, Inc. Insider Trading
XLOEvery SEC Form 4 insider trading filing for Xilio Therapeutics, Inc. (XLO) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001840233
- Filings
- 73
- Insiders
- 23
- Last filing
- 2026-06-11
Activity summary
No insider transactions in the last 30 days. The most recent was on June 11, 2026, when Bonstein Sara bought 5,000 shares. 73 filings from 23 insiders are on record below.
Three year balance
Buy and sell value by quarter, Q2 23 to Q2 26. Xilio Therapeutics, Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $8.2M.
90 day insight
Over the last 90 days, Xilio Therapeutics, Inc. insiders bought $0 across 7 transactions with no open-market sales.
- Most active insider: Bonstein Sara with 1 transaction totaling $0.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 11, 2026 | Bonstein Sara | XLO | Award | 5,000 | — | — |
| Jun 11, 2026 | Brennan Aoife | XLO | Award | 5,000 | — | — |
| Jun 11, 2026 | Xu Yuan | XLO | Award | 5,000 | — | — |
| Jun 11, 2026 | Ross Robert W. | XLO | Award | 5,000 | — | — |
| Jun 11, 2026 | Shannon James Samuel | XLO | Award | 5,000 | — | — |
45 more transactions hidden
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Query this yourself
The same rows, over the API.
curl "https://api.form4api.com/v1/transactions?ticker=XLO" \
-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Xilio Therapeutics, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →