Newest
PEBO ▼ sold $76K · Augenstein Mark filed 1d agoBBT ▲ bought $105K · Hollister Thomas J filed 2d agoBBT ▼ sold $20K · Eagan John Buckley filed 2d agoGS ▼ sold $60K · LESLIE ERICKA T filed 2d agoGS ▼ sold $163K · LESLIE ERICKA T filed 2d agoMSCI ▼ sold $1.5M · Gutowski Robert J. filed 2d agoGL ▼ sold $2.2M · MAJORS MICHAEL CLAY filed 2d agoPHR ▲ bought $362 · Linetsky David filed 2d agoPHR ▲ bought $320 · Linetsky David filed 2d agoRVI ▲ bought $23K · Whitney Meredith filed 2d agoLEO ▲ bought $369K · Saba Capital Management, L.P. filed 2d agoPG ▼ sold $5.7M · Jejurikar Shailesh filed 2d agoICLR ▼ sold $10K · Lyons Emer filed 2d agoICLR ▼ sold $10K · Lyons Emer filed 2d agoICLR ▼ sold $8K · Lyons Emer filed 2d agoICLR ▼ sold $15K · Lyons Emer filed 2d agoICLR ▼ sold $8K · Lyons Emer filed 2d agoPG ▼ sold $698K · Gama Paul filed 2d ago

Company / CIK 0001840233

Xilio Therapeutics, Inc.

Ticker
XLO
Size, estimated from filings
Micro cap (under $300M)
Insiders on file
14
Federal contracts on record
none matched
Lobbying filings on record
none matched
SEC filings
EDGAR ↗
Latest trade on record
October 1, 2026

Xilio Therapeutics, Inc. (XLO) has 14 insiders on file who disclosed 79 transactions in the last 12 months (2 open-market buys, 2 sales, about $12.0M at reported prices). No federal contract award that started in the last 180 days was found for a recipient with exactly this name; no lobbying filing names it as client this year.

Last updated October 2, 2026 · Sources: SEC EDGAR; USAspending; Senate LDA

Xilio Therapeutics, Inc. in charts

Who is trading this stock

Which people account for the buying and selling over the last 12 months?

BoughtSold

3 people account for the disclosed buying and selling in Xilio Therapeutics, Inc. over the last 12 months; the most active is Shannon James Samuel with $44K.

Insiders

NameRoleRowsBoughtSoldLast filed
Houvras YarivCHIEF MEDICAL OFFICER100October 2, 2026
Bello Akintunde OlatokumboDirector100June 12, 2026
Shannon James SamuelDirector210June 12, 2026
Curran Daniel J.Director100June 12, 2026
Xu YuanDirector100June 12, 2026
ROSS ROBERT W.Director100June 12, 2026
Bonstein SaraChief Financial Officer100June 12, 2026
Brennan AoifeDirector100June 12, 2026
GILEAD SCIENCES, INC.Insider300May 27, 2026
Blanchard Cheryl RDirector100April 16, 2026
Russo RenePRESIDENT AND CEO2000January 5, 2026
Luptakova KatarinaCHIEF MEDICAL OFFICER1400January 5, 2026
Brennan Kevin M.SVP, FINANCE AND ACCOUNTING1101January 5, 2026
Frankenfield Christopher JamesChief Financial Officer2101January 5, 2026

Rows are this company's Form 4 rows for each person. "Bought" and "sold" count open-market purchases (code P) and sales only. More in insider buying and insider selling.

Insider transactions

Download CSV79 rows · 27 KB · insider and congressional rows for this ticker · all downloads

FilerSecuritySideTrade dateDisclosedLagSharesPriceValueFlagsSourceShare
Houvras YarivXLOOther AOctober 1, 2026October 2, 20261d105,000——derivativeForm 4 ↗
Brennan AoifeXLOOther AJune 11, 2026June 12, 20261d5,000——derivativeForm 4 ↗
Bonstein SaraXLOOther AJune 11, 2026June 12, 20261d5,000——derivativeForm 4 ↗
ROSS ROBERT W.XLOOther AJune 11, 2026June 12, 20261d5,000——derivativeForm 4 ↗
Xu YuanXLOOther AJune 11, 2026June 12, 20261d5,000——derivativeForm 4 ↗
Curran Daniel J.XLOOther AJune 11, 2026June 12, 20261d5,000——derivativeForm 4 ↗
Shannon James SamuelXLOOther AJune 11, 2026June 12, 20261d5,000——derivativeForm 4 ↗
Bello Akintunde OlatokumboXLOOther AJune 11, 2026June 12, 20261d5,000——derivativeForm 4 ↗
Blanchard Cheryl RXLOOther AApril 15, 2026April 16, 20261d10,000——derivativeForm 4 ↗
Shannon James SamuelXLOBuy PMarch 26, 2026March 30, 20264d5,000$9$44KForm 4 ↗
GILEAD SCIENCES, INC.XLOOption / conversion PFebruary 13, 2026February 17, 20264d3,739,000$1$2.0MderivativeForm 4 ↗
Luptakova KatarinaXLOOption / conversion MJanuary 1, 2026January 5, 20264d16,625——derivativeForm 4 ↗
Luptakova KatarinaXLOOther ADecember 31, 2025January 5, 20265d451,885——latederivativeForm 4 ↗
Luptakova KatarinaXLOOption / conversion MJanuary 1, 2026January 5, 20264d16,625——Form 4 ↗
Brennan Kevin M.XLOOption / conversion MJanuary 1, 2026January 5, 20264d5,000——10b5-1 planderivativeForm 4 ↗
Brennan Kevin M.XLOOther ADecember 31, 2025January 5, 20265d95,221——late10b5-1 planderivativeForm 4 ↗
Brennan Kevin M.XLOSell SJanuary 2, 2026January 5, 20263d1,826$1$1,17410b5-1 planForm 4 ↗
Brennan Kevin M.XLOOption / conversion MJanuary 1, 2026January 5, 20264d5,000——10b5-1 planForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion MJanuary 1, 2026January 5, 20264d19,375——10b5-1 planderivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ADecember 31, 2025January 5, 20265d668,789——late10b5-1 planderivativeForm 4 ↗
Frankenfield Christopher JamesXLOSell SJanuary 2, 2026January 5, 20263d7,030$1$4,52210b5-1 planForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion MJanuary 1, 2026January 5, 20264d19,375——10b5-1 planForm 4 ↗
Russo ReneXLOOption / conversion MJanuary 1, 2026January 5, 20264d44,250——derivativeForm 4 ↗
Russo ReneXLOOther ADecember 31, 2025January 5, 20265d1,500,258——latederivativeForm 4 ↗
Russo ReneXLOOption / conversion MJanuary 1, 2026January 5, 20264d44,250——Form 4 ↗
GILEAD SCIENCES, INC.XLOOption / conversion XNovember 26, 2025December 1, 20255d13,335,000——latederivativeForm 4 ↗
GILEAD SCIENCES, INC.XLOOption / conversion XNovember 26, 2025December 1, 20255d13,335,000$1$10.0MlatederivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d300,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d300,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d150,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d150,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d117,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d117,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d20,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d20,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d45,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d45,000——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d37,296——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d37,296——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d23,786——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d23,786——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d155,090——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOption / conversion DNovember 21, 2025November 25, 20254d155,090——derivativeForm 4 ↗
Frankenfield Christopher JamesXLOOther ANovember 21, 2025November 25, 20254d925,000——derivativeForm 4 ↗
Brennan Kevin M.XLOOther ANovember 21, 2025November 25, 20254d20,000——derivativeForm 4 ↗
Brennan Kevin M.XLOOption / conversion DNovember 21, 2025November 25, 20254d20,000——derivativeForm 4 ↗
Brennan Kevin M.XLOOther ANovember 21, 2025November 25, 20254d25,000——derivativeForm 4 ↗
Brennan Kevin M.XLOOption / conversion DNovember 21, 2025November 25, 20254d25,000——derivativeForm 4 ↗
Brennan Kevin M.XLOOther ANovember 21, 2025November 25, 20254d55,000——derivativeForm 4 ↗
Brennan Kevin M.XLOOption / conversion DNovember 21, 2025November 25, 20254d55,000——derivativeForm 4 ↗
Brennan Kevin M.XLOOther ANovember 21, 2025November 25, 20254d131,700——derivativeForm 4 ↗
Luptakova KatarinaXLOOther ANovember 21, 2025November 25, 20254d106,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOption / conversion DNovember 21, 2025November 25, 20254d106,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOther ANovember 21, 2025November 25, 20254d25,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOption / conversion DNovember 21, 2025November 25, 20254d25,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOther ANovember 21, 2025November 25, 20254d35,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOption / conversion DNovember 21, 2025November 25, 20254d35,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOther ANovember 21, 2025November 25, 20254d15,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOption / conversion DNovember 21, 2025November 25, 20254d15,000——derivativeForm 4 ↗
Luptakova KatarinaXLOOther ANovember 21, 2025November 25, 20254d44,210——derivativeForm 4 ↗
Luptakova KatarinaXLOOption / conversion DNovember 21, 2025November 25, 20254d44,210——derivativeForm 4 ↗
Luptakova KatarinaXLOOther ANovember 21, 2025November 25, 20254d625,000——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d700,000——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d700,000——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d350,000——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d350,000——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d150,000——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d150,000——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d100,000——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d100,000——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d50,041——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d50,041——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d135,134——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d135,134——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d473,334——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d473,334——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d239,703——derivativeForm 4 ↗
Russo ReneXLOOption / conversion DNovember 21, 2025November 25, 20254d239,703——derivativeForm 4 ↗
Russo ReneXLOOther ANovember 21, 2025November 25, 20254d2,075,000——derivativeForm 4 ↗

Federal contracts (USAspending, awards started in the last 180 days)

No contract award starting in the last 180 days was found for a recipient named exactly "Xilio Therapeutics, Inc.". Subsidiaries and differently-spelled recipients are not matched — search contracts.

Lobbying (Senate LDA, as client)

No LDA filing posted since October 2025 names "Xilio Therapeutics, Inc." as the client. Filings under a subsidiary or trade-association name are not matched — search lobbying.

Companies whose stock was traded by the same people who traded XLO, by number of filers in common. It shows overlap in public filings and nothing else.

Guides for this page

Sources and method

Official sources behind this page
SourceFilingsRowsFirst filedNewest filedRead the originals
SEC EDGAR, Form 42079November 25, 2025October 2, 2026Form 4 list on EDGAR

Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.

Insiders and their transactions come from SEC EDGAR Form 4 filings for this issuer. Contracts and lobbying are matched by exact normalized name (suffixes like Inc./Corp. ignored) to USAspending recipients and LDA clients — a conservative match that misses subsidiaries on purpose. See methodology and corrections.

Not investment advice. Public records shown as filed; no recommendation is made or implied.