United States Biotechnology & Medical Research

Xilio Therapeutics Inc (XLO)

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Ticker: XLO Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
2.2
Shannon James Samuel Non-Executive Director
Transaction date
Purchase
Price
219.85
Quantity 73,192 -24.1%
Value US$2,742,174
Brennan Kevin M. SVP, FINANCE AND ACCOUNTING Officer
Transaction date
Planned sale
Price
241.22
Quantity 90,034 +11.8%
Value US$3,425,246
2.2
Shannon James Samuel Non-Executive Director
Transaction date
Purchase
Price
0.69
Quantity 25,000 +55.6%
Value US$17,215
2.2
Shannon James Samuel Non-Executive Director
Transaction date
Purchase
Price
0.69
Quantity 45,000 +inf%
Value US$30,870
3.0
Russo Rene PRESIDENT AND CEO Executive Director
Transaction date
Purchase
Price
0.68
Quantity 36,289 +14.8%
Value US$24,680
Brennan Kevin M. SVP, FINANCE AND ACCOUNTING Officer
Transaction date
Planned sale
Price
0.98
Quantity 1,803 -36.1%
Value US$1,774
1.3
GILEAD SCIENCES, INC. Large shareholder
Transaction date
Purchase
Price
1.04
Quantity 1,759,978 +24.0%
Value US$1,830,377
1.3
GILEAD SCIENCES, INC. Large shareholder
Transaction date
Purchase
Price
0.76
Quantity 485,250 +7.1%
Value US$368,790
2.8
Flynn James E Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 387,500 +51.2%
Value US$6,200,000
2.8
Flynn James E Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 387,500 +51.2%
Value US$6,200,000
2.1
BAY CITY CAPITAL LLC Large shareholder
Transaction date
Purchase
Price
16.00
Quantity 312,500 +38.3%
Value US$5,000,000
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-30 2026-03-26 B Purchase
2.2
Shannon James Samuel
Non-Executive Director
73,192 -24.1%
219.85
US$2,742,174 		73,192 -24.1% 219.85 US$2,742,174
2026-01-05 2026-01-02 PlS Planned sale
Frankenfield Christopher James

Chief Financial Officer

Officer
3,996 -43.9%
87.84
US$1,975,684 		3,996 -43.9% 87.84 US$1,975,684
2026-01-05 2026-01-02 PlS Planned sale
Brennan Kevin M.

SVP, FINANCE AND ACCOUNTING

Officer
90,034 +11.8%
241.22
US$3,425,246 		90,034 +11.8% 241.22 US$3,425,246
2025-06-18 2025-06-17 B Purchase
2.2
Shannon James Samuel
Non-Executive Director
25,000 +55.6%
0.69
US$17,215 		25,000 +55.6% 0.69 US$17,215
2025-06-18 2025-06-16 B Purchase
2.2
Shannon James Samuel
Non-Executive Director
45,000 +inf%
0.69
US$30,870 		45,000 +inf% 0.69 US$30,870
2025-06-18 2025-06-16 B Purchase
3.0
Russo Rene

PRESIDENT AND CEO

Executive Director
36,289 +14.8%
0.68
US$24,680 		36,289 +14.8% 0.68 US$24,680
2025-01-03 2025-01-02 PlS Planned sale
Brennan Kevin M.

SVP, FINANCE AND ACCOUNTING

Officer
1,803 -36.1%
0.98
US$1,774 		1,803 -36.1% 0.98 US$1,774
2025-01-03 2025-01-02 PlS Planned sale
Frankenfield Christopher James

Chief Financial Officer

Officer
6,954 -35.9%
0.98
US$6,841 		6,954 -35.9% 0.98 US$6,841
2024-12-19 2024-12-18 B Purchase
1.3
GILEAD SCIENCES, INC.
Large shareholder
1,759,978 +24.0%
1.04
US$1,830,377 		1,759,978 +24.0% 1.04 US$1,830,377
2024-04-03 2024-04-02 B Purchase
1.3
GILEAD SCIENCES, INC.
Large shareholder
485,250 +7.1%
0.76
US$368,790 		485,250 +7.1% 0.76 US$368,790
2024-02-09 2024-02-08 S Sale
2.0
Atlas Venture Fund XI, L.P.
Large shareholder
267 -0.0%
0.64
US$171 		267 -0.0% 0.64 US$171
2024-02-09 2024-02-08 S Sale
2.0
Atlas Venture Fund XI, L.P.
Large shareholder
733 -0.0%
0.64
US$469 		733 -0.0% 0.64 US$469
2024-01-16 2024-01-12 S Sale
2.0
Atlas Venture Fund XI, L.P.
Large shareholder
560 -0.1%
0.83
US$465 		560 -0.1% 0.83 US$465
2024-01-16 2024-01-12 S Sale
2.0
Atlas Venture Fund XI, L.P.
Large shareholder
1,540 -0.1%
0.83
US$1,278 		1,540 -0.1% 0.83 US$1,278
2024-01-16 2024-01-11 S Sale
2.0
Atlas Venture Fund XI, L.P.
Large shareholder
569 -0.1%
0.87
US$495 		569 -0.1% 0.87 US$495
2024-01-16 2024-01-11 S Sale
2.0
Atlas Venture Fund XI, L.P.
Large shareholder
1,566 -0.1%
0.87
US$1,362 		1,566 -0.1% 0.87 US$1,362
2021-12-10 2021-12-10 B Purchase
2.8
Bain Capital Life Sciences Investors, LLC
Large shareholder
3,188 +0.1%
10.24
US$32,638 		3,188 +0.1% 10.24 US$32,638
2021-12-10 2021-12-10 B Purchase
2.8
Bain Capital Life Sciences Investors, LLC
Large shareholder
21,812 +0.8%
9.56
US$208,564 		21,812 +0.8% 9.56 US$208,564
2021-12-10 2021-12-09 B Purchase
2.8
Bain Capital Life Sciences Investors, LLC
Large shareholder
4,011 +0.1%
9.84
US$39,485 		4,011 +0.1% 9.84 US$39,485
2021-12-10 2021-12-08 B Purchase
2.8
Bain Capital Life Sciences Investors, LLC
Large shareholder
13,458 +0.5%
9.62
US$129,474 		13,458 +0.5% 9.62 US$129,474
2021-10-28 2021-10-26 B Purchase
2.8
Flynn James E
Large shareholder
387,500 +51.2%
16.00
US$6,200,000 		387,500 +51.2% 16.00 US$6,200,000
2021-10-28 2021-10-26 B Purchase
2.8
Flynn James E
Large shareholder
387,500 +51.2%
16.00
US$6,200,000 		387,500 +51.2% 16.00 US$6,200,000
2021-10-26 2021-10-26 B Purchase
2.0
Atlas Venture Fund XI, L.P.
Large shareholder
187,500 +34.2%
16.00
US$3,000,000 		187,500 +34.2% 16.00 US$3,000,000
2021-10-26 2021-10-26 B Purchase
2.8
Rock Springs Capital Management LP
Large shareholder
500,000 +66.1%
16.00
US$8,000,000 		500,000 +66.1% 16.00 US$8,000,000
2021-10-26 2021-10-26 B Purchase
2.1
BAY CITY CAPITAL LLC
Large shareholder
312,500 +38.3%
16.00
US$5,000,000 		312,500 +38.3% 16.00 US$5,000,000
2021-10-26 2021-10-26 B Purchase
1.6
RiverVest Venture Fund IV, L.P.
Large shareholder
250,000 +21.0%
16.00
US$4,000,000 		250,000 +21.0% 16.00 US$4,000,000
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