X4 Pharmaceuticals, Inc
Biological Products, (no Diagnostic Substances)
61 North Beacon Street, 4th Floor, Boston, MA, 02134 Insider Ownership
Above 5% Ownership
- SC 13D/A
- 4
- SC 13D/A
- SC 13G
- SC 13G/A
- 13F-HR/A
- SC 13G/A
- SC 13G
- SC 13G/A
- 13F-HR
- 13F-HR
- SC 13G
- 13F-HR/A
- 13F-HR
- 3
- SC 13G
- SC 13G
- SC 13G/A
- SC 13G/A
- SC 13G
- SC 13G
- SC 13G/A
- SC 13G/A
- SC 13G
- SC 13G/A
- SC 13G
- SC 13G/A
- 13F-HR
- SC 13G
- 3
- SC 13G/A
- 144
- 4
- SC 13D/A
- 13F-NT
- SC 13G/A
- SC 13G
- SC 13G/A
- SC 13G
- SC 13G/A
- SC 13G/A
- SC 13G/A
- SC 13G/A
- SC 13G/A
- SC 13G
- SC 13G/A
- SC 13G/A
- 4
- SC 13G/A
- SC 13G/A
- SC 13G/A
- SC 13G
- SC 13G
- SC 13G
- SC 13G
- SC 13D/A
- SC 13D/A
- SC 13D/A
- SC 13D
- SC 13D
- SC 13G/A
- SC 13G
- SC 13G
- SC 13G
- SC 13G
- SC 13G/A
- SC 13G/A
- SC 13D
- SC 13G
- SC 13G/A
- SC 13G/A
- SC 13G/A
- SC 13G/A
- SC 13G/A
- SC 13G/A
- 13F-HR
- 13F-HR/A
- 13F-HR/A
- SC 13G
- 3
- SC 13G/A
- SC 13G
- 13F-HR
- 13F-HR
- 4
Aliski William
Aliski William
02 Dec 21
Aliski William
09 Oct 18
Aliski William
09 Oct 18
Aliski William
24 Sep 18
Aliski William
25 Jan 18
Arbet-engels Christophe
Arbet-engels Christophe
28 Feb 24
Arbet-engels Christophe
16 Feb 24
Arbet-engels Christophe
27 May 20
Arbet-engels Christophe
11 Feb 20
Arbet-engels Christophe
11 Feb 20
Baldry Mark
Baldry Mark
16 Feb 24
Baldry Mark
03 Nov 23
Baldry Mark
02 Nov 23
Baldry Mark
04 Nov 22
Baldry Mark
07 Aug 19
Blech Isaac
Amended Statement Of Beneficial Ownership Of More Than 5%.
13 Nov 17
Blech Isaac
05 Jul 17
Amended Statement Of Beneficial Ownership Of More Than 5%.
10 Jun 13
Blech Isaac
21 Feb 12
Blech Isaac
21 Jul 11
Bridger Gary
Bridger Gary
11 Jun 24
Bridger Gary
11 Jun 20
Bridger Gary
02 Apr 19
Bridger Gary
03 Nov 15
Bridger Gary
07 May 14
Cadavid Diego
Cadavid Diego
06 Jan 21
Cadavid Diego
01 Jun 20
Cadavid Diego
12 May 20
Cadavid Diego
05 Feb 20
Cadavid Diego
17 Jul 19
Clark William D
Clark William D
02 Jun 20
Clark William D
25 Jun 18
Clark William D
11 Feb 14
Clark William D
19 Feb 10
Clark William D
07 May 09
De Craecker Francoise
De Craecker Francoise
11 Jun 24
De Craecker Francoise
14 Jun 23
De Craecker Francoise
27 Jun 22
De Craecker Francoise
18 Oct 21
De Craecker Francoise
18 Oct 21
Dibiase Mary
Dibiase Mary
08 Oct 24
Dibiase Mary
26 Jun 23
Dibiase Mary
13 Mar 23
Dibiase Mary
09 Nov 22
Dibiase Mary
17 Jun 22
Gerngross Tillman U.
Gerngross Tillman U.
21 Jun 22
Gerngross Tillman U.
05 Aug 21
Gerngross Tillman U.
14 May 19
Gerngross Tillman U.
11 Feb 19
Gerngross Tillman U.
06 Feb 19
Gordon Carl L
Gordon Carl L
13 Jun 22
Gordon Carl L
23 Feb 22
Gordon Carl L
15 Mar 21
Gordon Carl L
30 Jan 18
Gordon Carl L
25 Jan 18
Gray Michael
Gray Michael
07 May 13
Gray Michael
20 Apr 12
Gray Michael
28 Jan 08
Gray Michael
10 Dec 04
Gray Michael
15 Dec 03
Kelley Lynne E
Kelley Lynne E
26 Apr 19
Kelley Lynne E
01 Aug 18
Kelley Lynne E
05 Feb 18
Kelley Lynne E
14 Apr 16
Kelley Lynne E
17 Mar 16
Lawton Alison Frances
Lawton Alison Frances
30 Jun 22
Lawton Alison Frances
03 Jun 21
Lawton Alison Frances
18 Nov 19
Lawton Alison Francis
11 Mar 13
Lawton Alison Francis
17 Feb 12
Mantus David
Mantus David
09 Mar 18
Mantus David
15 Nov 17
Mcgirr David W J
Mcgirr David W J
20 Jun 24
Mcgirr David W J
26 Jun 15
Mcgirr David W J
09 Jun 15
Mcgirr David W J
09 Jan 15
Mcgirr David W J
24 Aug 07
Mcguire Terrance
Mcguire Terrance
11 Aug 23
Mcguire Terrance
09 Aug 21
Mcguire Terrance
19 Aug 15
Mcguire Terrance
16 Jun 15
Mcguire Terrance
11 May 04
Meisner Derek M
Meisner Derek M
17 Jun 21
Meisner Derek M
18 Aug 20
Meisner Derek M
11 Feb 19
Meisner Derek M
21 Sep 18
Meisner Derek M
20 Sep 18
Mostafa Adam S.
Mostafa Adam S.
30 Jun 23
Mostafa Adam S.
19 Jun 19
Mostafa Adam S.
15 Mar 19
Mostafa Adam S.
14 Mar 19
Mostafa Adam S.
10 May 18
Nagy Eszter
Nagy Eszter
09 Mar 18
Nagy Eszter
15 Nov 17
Nessi Claudio
Omega Fund Vi, L.p.
02 Nov 23
Omega Fund Vi, L.p.
06 Oct 21
Omega Fund V, L.p.
12 Feb 21
Omega Fund V, L.p.
08 Oct 20
Omega Fund Iv, L.p.
03 Jul 18
Ragan Paula
Ragan Paula
16 Feb 24
Ragan Paula
17 Jun 22
Ragan Paula
16 Jul 21
Ragan Paula
04 May 21
Ragan Paula
02 Mar 21
Ross Michael Jay
Ross Michael Jay
17 Jun 22
Ross Michael Jay
21 May 18
Ross Michael Jay
15 Nov 17
Ross Michael Jay
08 Jun 15
Ross Michael Jay
28 Jul 03
Russo Rene
Russo Rene
04 Jan 23
Russo Rene
25 Oct 21
Russo Rene
02 Jun 21
Russo Rene
19 Jun 19
Russo Rene
09 Mar 18
Schulman Amy W
Polaris Partners Gp X, L.l.c.
22 Oct 24
Schulman Amy W
25 Jun 24
Schulman Amy W
27 Feb 23
Schulman Amy W
15 Dec 21
Schulman Amy W
01 Jul 08
Skerlj Renato
Skerlj Renato
10 Sep 20
Skerlj Renato
18 Aug 20
Skerlj Renato
11 Jun 20
Skerlj Renato
11 Jun 20
Stevens Anthony Chris
Stevens Anthony Chris
09 Mar 18
Stevens Anthony Chris
15 Nov 17
Stevens Anthony Chris
26 Mar 04
Stewart Murray
Stewart Murray
16 Feb 21
Stewart Murray
21 Oct 20
Stewart Murray
02 Apr 19
Stewart Murray
17 Oct 18
Stewart Murray
29 Nov 17
Taveras Arthur
Taveras Arthur
11 Mar 24
Taveras Arthur
12 Feb 24
Taveras Arthur
12 Feb 24
Taveras Arthur
01 Nov 23
Taveras Arthur
01 Mar 22
Woods Keith
Woods Keith
20 Jun 24
Woods Keith
14 Jun 24
Woods Keith
12 Dec 23
Woods Keith
08 Dec 23
Woods Keith
08 Dec 23
Wyzga Michael S
Wyzga Michael S
24 Jun 22
Wyzga Michael S
21 Jun 22
Wyzga Michael S
02 Apr 19
Wyzga Michael S
10 Feb 15
Wyzga Michael S
02 Mar 12
Ra Capital Management, L.p.
Amended Statement Of Beneficial Ownership Of More Than 5%.
13 Nov 24
Ra Capital Management, L.p.
25 Jul 23
Amended Statement Of Beneficial Ownership Of More Than 5%.
14 Nov 22
16 Feb 21
Amended Statement Of Beneficial Ownership Of More Than 5%.
14 Feb 14
Point72 Asset Management, L.p.
Quarterly Holdings Report
16 Sep 24
14 Feb 24
26 Nov 19
Amended Statement Of Beneficial Ownership Of More Than 5%.
14 Feb 17
Quarterly Holdings Report
2024 undefined
Sphera Funds Management Ltd.
Quarterly Holdings Report
15 May 24
28 Jan 20
20 Jun 19
Quarterly Holdings Report
09 Nov 17
Breen Doron
29 Jul 10
Polaris Venture Partners V, L.p.
Amended Statement Of Beneficial Ownership Of More Than 5%.
24 Jun 22
Amended Statement Of Beneficial Ownership Of More Than 5%.
17 Jul 19
Polaris Venture Management Co. V, L.l.c.
19 Jun 15
Crane Alan L
06 Aug 14
Polaris Venture Management Co. V, L.l.c.
11 Feb 14
Hirschman Orin
26 Jul 24
09 Apr 24
Amended Statement Of Beneficial Ownership Of More Than 5%.
15 Feb 23
Amended Statement Of Beneficial Ownership Of More Than 5%.
07 Jul 22
30 Apr 21
New Enterprise Associates 16, L.p.
New Enterprise Associates 16, L.p.
03 Oct 24
Amended Statement Of Beneficial Ownership Of More Than 5%.
02 Nov 21
Amended Statement Of Beneficial Ownership Of More Than 5%.
03 Aug 20
New Enterprise Associates 16, L.p.
17 Jul 19
Acquired More Than 5% Ownership Of Any Class Of A Company's Securities.
25 Oct 18
Flynn James E
14 Nov 24
10 Feb 20
16 Apr 15
Flynn James E
31 Dec 08
Flynn James E
24 May 06
Blackrock Funding, Inc. /de
08 Nov 24
23 Oct 24
23 Oct 24
21 Oct 24
18 Oct 24
Ikarian Capital, Llc
07 Oct 24
Amended Statement Of Beneficial Ownership Of More Than 5%.
14 Feb 22
Quarterly Holdings Report
17 May 21
30 Dec 20
Ikarian Capital, Llc
14 Sep 20
Bain Capital Life Sciences Fund, L.p.
22 Jan 24
Bain Capital Life Sciences Fund, Lp
10 Oct 23
Bain Capital Life Sciences Investors, Llc
30 May 23
Amended Statement Of Beneficial Ownership Of More Than 5%.
27 May 22
14 Nov 18
Orbimed Advisors Llc
Orbimed Advisors Llc
13 May 22
Orbimed Advisors Llc
17 Dec 21
10 Feb 09
27 Feb 07
Orbimed Advisors Llc
16 Aug 05
X4 Therapeutics, Inc.
23 Dec 19
Acquired More Than 5% Ownership Of Any Class Of A Company's Securities.
06 Dec 18
Amended Notice Of An Exempt Offering Of Securities Under Regulation D.
21 Sep 18
Notice Of An Exempt Offering Of Securities Under Regulation D.
15 Nov 17
Notice Of An Exempt Offering Of Securities Under Regulation D.
30 Jan 15
Fmr Llc
09 Feb 22
14 Feb 14
16 Feb 10
10 Nov 03
11 Feb 97
Blackrock Inc.
31 Jan 19
30 Jan 19
08 Jul 16
04 Feb 11
09 Feb 07
Biotechnology Value Fund L P
14 Feb 19
14 Feb 19
Bvf Partners L P/il
29 Jul 03
20 Aug 02
15 Jun 01
Lincoln Park Capital Fund, Llc
14 Feb 24
02 Mar 20
29 Jan 20
24 Sep 18
13 Apr 18
Growth Equity Opportunities 18 Vge, Llc
Amended Statement Of Beneficial Ownership Of More Than 5%.
26 May 23
Amended Statement Of Beneficial Ownership Of More Than 5%.
20 Dec 22
Amended Statement Of Beneficial Ownership Of More Than 5%.
12 Sep 22
Acquired More Than 5% Ownership Of Any Class Of A Company's Securities.
19 Jul 22
Acquired More Than 5% Ownership Of Any Class Of A Company's Securities.
24 May 22
Ragan Paula
Ragan Paula
16 Feb 24
Ragan Paula
17 Jun 22
Ragan Paula
16 Jul 21
Ragan Paula
04 May 21
Ragan Paula
02 Mar 21
Empery Asset Management, Lp
Amended Statement Of Beneficial Ownership Of More Than 5%.
26 Jan 21
18 Nov 20
05 May 20
19 Dec 17
27 Mar 17
Ecor1 Capital, Llc
14 Feb 24
Amended Statement Of Beneficial Ownership Of More Than 5%.
14 Feb 23
Acquired More Than 5% Ownership Of Any Class Of A Company's Securities.
10 Mar 21
22 Jan 21
Amended Statement Of Beneficial Ownership Of More Than 5%.
11 Mar 19
Svlsf V, Llc
Acquired More Than 5% Ownership Of Any Class Of A Company's Securities.
07 Jun 19
Svlsf V, Llc
30 May 19
Svlsf V, Llc
01 Oct 18
Acquired More Than 5% Ownership Of Any Class Of A Company's Securities.
14 Feb 18
Svlsf V, Llc
15 Nov 17
Vanguard Group Inc
11 Feb 19
11 Feb 16
10 Feb 16
12 Feb 14
12 Feb 14
Cormorant Asset Management, Lp
Amended Statement Of Beneficial Ownership Of More Than 5%.
30 Jan 24
Amended Statement Of Beneficial Ownership Of More Than 5%.
14 Feb 22
Cormorant Asset Management, Lp
05 Aug 21
Cormorant Asset Management, Lp
23 Jun 21
07 Nov 19
Bill & Melinda Gates Foundation
Quarterly Holdings Report
14 May 24
Quarterly Holdings Report
15 Nov 21
Quarterly Holdings Report
15 Nov 21
12 Feb 20
Bill & Melinda Gates Foundation
25 Jul 18
Millennium Management Llc
Amended Statement Of Beneficial Ownership Of More Than 5%.
27 Jan 23
20 Jan 23
Quarterly Holdings Report
14 Nov 18
Quarterly Holdings Report
14 Nov 16
Riverview Group Llc
07 Jan 05