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Black Diamond Therapeutics, Inc.

BDTX Net buying
CIK 0001701541 #4227 in the set updated 19 Sep 2026
Bought (120 mo)
$105.50M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$41.09M
$167.50K on a plan · $4.19M straight out of an exercise
Sold at will
$36.73M
140 of 190 sales
Net
+$64.41M
+$68.77M against sales at will

By person

23 insiders · 228 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Behbahani Ali
Director
$20.20M (2)
—
+$20.20M
11,448,800
19.93%
$24.24M
+66.0%
Shah Rajeev M.
Director
$19.00M (3)
—
+$19.00M
311,926
0.5429%
$660.32K
—
BIOTECH GROWTH N V
10% owner
$19.68M (15)
$12.00M (7)
+$7.68M
2,733,547
4.76%
$5.79M
−26.8%
Flynn James E
10% owner
$7.60M (1)
—
+$7.60M
778,790
1.36%
$1.65M
—
Bolzon Bradley J PhD
Director
$17.00M (4)
$11.67M (66)
+$5.33M
402,793
0.7011%
$852.67K
—
RA CAPITAL MANAGEMENT, L.P. entity
Director
$4.68M (1)
—
+$4.68M
3,213,828
5.59%
$6.80M
+41.1%
Versant Venture Capital VI, L.P. entity
10% owner
$17.00M (4)
$13.07M (67)
+$3.93M
4,107,283
7.15%
$8.69M
—
Epstein David M.
SEE REMARKS
—
$1.67M (8) scheduled
−$1.67M
688,002
1.20%
$1.46M
+44.5%
Hatzis-Schoch Brent
SEE REMARKS
$57.00K (1)
$1.37M (22) scheduled
−$1.31M
83,400
0.1452%
$176.55K
—
Roberts Christopher D.
Chief Scientific Officer
—
$825.21K (14) scheduled
−$825.21K
3,200
0.0056%
$6.77K
—
Leggett Thomas
Chief Financial Officer
—
$495.61K (6) scheduled
−$495.61K
0
0.0000%
$0.00
—
INGRAM ROBERT ALEXANDER
FORMER DIRECTOR
$152.29K (1)
—
+$152.29K
42,854
0.0746%
$90.72K
—
Ni Fang
SEE REMARKS
$133.38K (3)
—
+$133.38K
125,389
0.2182%
$265.44K
+184.8%
Wellington Biomedical Innovation Master Investors (Cayman) I L.P.
10% owner
—
—
—
568,185
0.9889%
$1.20M
—
Buck Elizabeth
CHIEF SCIENTIFIC OFFICER
—
—
—
170,192
0.2962%
$360.28K
+78.8%
Velleca Mark A.
PRESIDENT & CEO
—
—
—
121,522
0.2115%
$257.25K
—
Jones Erika
SEE REMARKS
—
—
—
85,150
0.1482%
$180.25K
—
Yurasov Sergey
CHIEF MEDICAL OFFICER
—
—
—
75,000
0.1305%
$158.77K
—
Menzel Garry E
Director
—
—
—
51,825
0.0902%
$109.71K
—
Raman Prakash
Director
—
—
—
45,039
0.0784%
$95.34K
—
DIXON WENDY L
Director
—
—
—
38,054
0.0662%
$80.56K
+4,195%
HUMPHREY RACHEL
Chief Medical Officer
—
—
—
10,000
0.0174%
$21.17K
—
Campbell Shannon
Director
—
—
—
8,865
0.0154%
$18.77K
—

Individual transactions

140
Insider
Date
Role
Action
Shares
Price
Amount
BIOTECH GROWTH N V
19 Mar 2025
10% owner
Sell
500,000
$2.12
$1.06M
BIOTECH GROWTH N V
19 Mar 2025
10% owner
Sell
584,292
$1.95
$1.14M
BIOTECH GROWTH N V
19 Mar 2025
10% owner
Sell
400,000
$2.09
$837.16K
BIOTECH GROWTH N V
19 Mar 2025
10% owner
Sell
2,000,000
$2.00
$4.00M
BIOTECH GROWTH N V
19 Mar 2025
10% owner
Sell
1,000,000
$2.31
$2.31M
BIOTECH GROWTH N V
19 Mar 2025
10% owner
Sell
300,000
$1.94
$582.90K
BIOTECH GROWTH N V
19 Mar 2025
10% owner
Sell
1,000,000
$2.07
$2.07M
Versant Venture Capital VI, L.P.
28 Aug 2024
10% owner
Sell
221,600
$6.32
$1.40M
Versant Venture Capital VI, L.P.
30 Nov 2020
10% owner
Sell indirect
200
$34.16
$6.83K
Versant Venture Capital VI, L.P.
30 Nov 2020
10% owner
Sell indirect
10,193
$33.13
$337.68K
Bolzon Bradley J PhD
30 Nov 2020
Director
Sell indirect
200
$34.16
$6.83K
Bolzon Bradley J PhD
30 Nov 2020
Director
Sell indirect
10,193
$33.13
$337.68K
Bolzon Bradley J PhD
19 Nov 2020
Director
Sell indirect
114,854
$33.01
$3.79M
Bolzon Bradley J PhD
19 Nov 2020
Director
Sell indirect
15,163
$33.01
$500.53K
Versant Venture Capital VI, L.P.
19 Nov 2020
10% owner
Sell
114,854
$33.01
$3.79M
Versant Venture Capital VI, L.P.
19 Nov 2020
10% owner
Sell indirect
15,163
$33.01
$500.53K
Versant Venture Capital VI, L.P.
18 Nov 2020
10% owner
Sell
473
$33.09
$15.65K
Versant Venture Capital VI, L.P.
18 Nov 2020
10% owner
Sell indirect
63
$33.09
$2.08K
Bolzon Bradley J PhD
18 Nov 2020
Director
Sell indirect
473
$33.09
$15.65K
Bolzon Bradley J PhD
18 Nov 2020
Director
Sell indirect
63
$33.09
$2.08K
Versant Venture Capital VI, L.P.
17 Nov 2020
10% owner
Sell
3,705
$33.05
$122.45K
Versant Venture Capital VI, L.P.
17 Nov 2020
10% owner
Sell indirect
489
$33.05
$16.16K
Bolzon Bradley J PhD
17 Nov 2020
Director
Sell indirect
3,705
$33.05
$122.45K
Bolzon Bradley J PhD
17 Nov 2020
Director
Sell indirect
489
$33.05
$16.16K
Bolzon Bradley J PhD
16 Nov 2020
Director
Sell indirect
177
$33.01
$5.84K
Bolzon Bradley J PhD
16 Nov 2020
Director
Sell indirect
23
$33.01
$759.29
Versant Venture Capital VI, L.P.
16 Nov 2020
10% owner
Sell
177
$33.01
$5.84K
Versant Venture Capital VI, L.P.
16 Nov 2020
10% owner
Sell indirect
23
$33.01
$759.29
Bolzon Bradley J PhD
13 Nov 2020
Director
Sell indirect
1,502
$34.53
$51.87K
Bolzon Bradley J PhD
13 Nov 2020
Director
Sell indirect
2,473
$33.31
$82.39K
Bolzon Bradley J PhD
13 Nov 2020
Director
Sell indirect
198
$34.53
$6.84K
Bolzon Bradley J PhD
13 Nov 2020
Director
Sell indirect
327
$33.31
$10.89K
Versant Venture Capital VI, L.P.
13 Nov 2020
10% owner
Sell
1,502
$34.53
$51.87K
Versant Venture Capital VI, L.P.
13 Nov 2020
10% owner
Sell
2,473
$33.31
$82.39K
Versant Venture Capital VI, L.P.
13 Nov 2020
10% owner
Sell indirect
198
$34.53
$6.84K
Versant Venture Capital VI, L.P.
13 Nov 2020
10% owner
Sell indirect
327
$33.31
$10.89K
Bolzon Bradley J PhD
12 Nov 2020
Director
Sell indirect
353
$35.15
$12.41K
Bolzon Bradley J PhD
12 Nov 2020
Director
Sell indirect
9,450
$34.39
$325.01K
Bolzon Bradley J PhD
12 Nov 2020
Director
Sell indirect
3,976
$33.48
$133.11K
Bolzon Bradley J PhD
12 Nov 2020
Director
Sell indirect
47
$35.15
$1.65K
Bolzon Bradley J PhD
12 Nov 2020
Director
Sell indirect
1,248
$34.39
$42.92K
Bolzon Bradley J PhD
12 Nov 2020
Director
Sell indirect
524
$33.48
$17.54K
Versant Venture Capital VI, L.P.
12 Nov 2020
10% owner
Sell
353
$35.15
$12.41K
Versant Venture Capital VI, L.P.
12 Nov 2020
10% owner
Sell
9,450
$34.39
$325.01K
Versant Venture Capital VI, L.P.
12 Nov 2020
10% owner
Sell
3,976
$33.48
$133.11K
Versant Venture Capital VI, L.P.
12 Nov 2020
10% owner
Sell indirect
47
$35.15
$1.65K
Versant Venture Capital VI, L.P.
12 Nov 2020
10% owner
Sell indirect
1,248
$34.39
$42.92K
Versant Venture Capital VI, L.P.
12 Nov 2020
10% owner
Sell indirect
524
$33.48
$17.54K
Bolzon Bradley J PhD
11 Nov 2020
Director
Sell indirect
9,027
$34.94
$315.38K
Bolzon Bradley J PhD
11 Nov 2020
Director
Sell indirect
2,119
$33.86
$71.75K
Bolzon Bradley J PhD
11 Nov 2020
Director
Sell indirect
1,191
$34.94
$41.61K
Bolzon Bradley J PhD
11 Nov 2020
Director
Sell indirect
280
$33.86
$9.48K
Versant Venture Capital VI, L.P.
11 Nov 2020
10% owner
Sell
9,027
$34.94
$315.38K
Versant Venture Capital VI, L.P.
11 Nov 2020
10% owner
Sell
2,119
$33.86
$71.75K
Versant Venture Capital VI, L.P.
11 Nov 2020
10% owner
Sell indirect
1,191
$34.94
$41.61K
Versant Venture Capital VI, L.P.
11 Nov 2020
10% owner
Sell indirect
280
$33.86
$9.48K
Bolzon Bradley J PhD
10 Nov 2020
Director
Sell indirect
12,433
$34.14
$424.51K
Bolzon Bradley J PhD
10 Nov 2020
Director
Sell indirect
11,388
$33.48
$381.25K
Bolzon Bradley J PhD
10 Nov 2020
Director
Sell indirect
1,642
$34.14
$56.06K
Bolzon Bradley J PhD
10 Nov 2020
Director
Sell indirect
1,503
$33.48
$50.32K
Versant Venture Capital VI, L.P.
10 Nov 2020
10% owner
Sell
12,433
$34.14
$424.51K
Versant Venture Capital VI, L.P.
10 Nov 2020
10% owner
Sell
11,388
$33.48
$381.25K
Versant Venture Capital VI, L.P.
10 Nov 2020
10% owner
Sell indirect
1,642
$34.14
$56.06K
Versant Venture Capital VI, L.P.
10 Nov 2020
10% owner
Sell indirect
1,503
$33.48
$50.32K
Bolzon Bradley J PhD
9 Nov 2020
Director
Sell indirect
5,565
$33.06
$183.95K
Bolzon Bradley J PhD
9 Nov 2020
Director
Sell indirect
735
$33.06
$24.30K
Versant Venture Capital VI, L.P.
9 Nov 2020
10% owner
Sell
5,565
$33.06
$183.95K
Versant Venture Capital VI, L.P.
9 Nov 2020
10% owner
Sell indirect
735
$33.06
$24.30K
Bolzon Bradley J PhD
6 Nov 2020
Director
Sell indirect
2,738
$33.13
$90.71K
Bolzon Bradley J PhD
6 Nov 2020
Director
Sell indirect
362
$33.13
$11.99K
Versant Venture Capital VI, L.P.
6 Nov 2020
10% owner
Sell
2,738
$33.13
$90.71K
Versant Venture Capital VI, L.P.
6 Nov 2020
10% owner
Sell indirect
362
$33.13
$11.99K
Versant Venture Capital VI, L.P.
5 Nov 2020
10% owner
Sell
7,816
$33.15
$259.08K
Versant Venture Capital VI, L.P.
5 Nov 2020
10% owner
Sell indirect
1,032
$33.15
$34.21K
Bolzon Bradley J PhD
5 Nov 2020
Director
Sell indirect
7,816
$33.15
$259.08K
Bolzon Bradley J PhD
5 Nov 2020
Director
Sell indirect
1,032
$33.15
$34.21K
Versant Venture Capital VI, L.P.
4 Nov 2020
10% owner
Sell
2,208
$33.14
$73.16K
Versant Venture Capital VI, L.P.
4 Nov 2020
10% owner
Sell indirect
292
$33.14
$9.68K
Bolzon Bradley J PhD
4 Nov 2020
Director
Sell indirect
2,208
$33.14
$73.16K
Bolzon Bradley J PhD
4 Nov 2020
Director
Sell indirect
292
$33.14
$9.68K
Bolzon Bradley J PhD
27 Oct 2020
Director
Sell indirect
707
$33.03
$23.35K
Bolzon Bradley J PhD
27 Oct 2020
Director
Sell indirect
93
$33.03
$3.07K
Versant Venture Capital VI, L.P.
27 Oct 2020
10% owner
Sell
707
$33.03
$23.35K
Versant Venture Capital VI, L.P.
27 Oct 2020
10% owner
Sell indirect
93
$33.03
$3.07K
Bolzon Bradley J PhD
26 Oct 2020
Director
Sell indirect
7,158
$33.30
$238.39K
Bolzon Bradley J PhD
26 Oct 2020
Director
Sell indirect
945
$33.30
$31.47K
Versant Venture Capital VI, L.P.
26 Oct 2020
10% owner
Sell
7,158
$33.30
$238.39K
Versant Venture Capital VI, L.P.
26 Oct 2020
10% owner
Sell indirect
945
$33.30
$31.47K
Bolzon Bradley J PhD
19 Oct 2020
Director
Sell indirect
3,739
$33.43
$125.00K
Bolzon Bradley J PhD
19 Oct 2020
Director
Sell indirect
494
$33.43
$16.51K
Versant Venture Capital VI, L.P.
19 Oct 2020
10% owner
Sell
3,739
$33.43
$125.00K
Versant Venture Capital VI, L.P.
19 Oct 2020
10% owner
Sell indirect
494
$33.43
$16.51K
Bolzon Bradley J PhD
16 Oct 2020
Director
Sell indirect
7,697
$33.57
$258.41K
Bolzon Bradley J PhD
16 Oct 2020
Director
Sell indirect
1,016
$33.57
$34.11K
Versant Venture Capital VI, L.P.
16 Oct 2020
10% owner
Sell
7,697
$33.57
$258.41K
Versant Venture Capital VI, L.P.
16 Oct 2020
10% owner
Sell indirect
1,016
$33.57
$34.11K
Bolzon Bradley J PhD
15 Oct 2020
Director
Sell indirect
2,473
$33.03
$81.69K
Bolzon Bradley J PhD
15 Oct 2020
Director
Sell indirect
327
$33.03
$10.80K
Versant Venture Capital VI, L.P.
15 Oct 2020
10% owner
Sell
2,473
$33.03
$81.69K
Versant Venture Capital VI, L.P.
15 Oct 2020
10% owner
Sell indirect
327
$33.03
$10.80K
Versant Venture Capital VI, L.P.
14 Oct 2020
10% owner
Sell
4,859
$33.09
$160.79K
Versant Venture Capital VI, L.P.
14 Oct 2020
10% owner
Sell indirect
642
$33.09
$21.24K
Bolzon Bradley J PhD
14 Oct 2020
Director
Sell indirect
4,859
$33.09
$160.79K
Bolzon Bradley J PhD
14 Oct 2020
Director
Sell indirect
642
$33.09
$21.24K
Versant Venture Capital VI, L.P.
13 Oct 2020
10% owner
Sell
10,370
$33.39
$346.27K
Versant Venture Capital VI, L.P.
13 Oct 2020
10% owner
Sell indirect
1,369
$33.39
$45.71K
Bolzon Bradley J PhD
13 Oct 2020
Director
Sell indirect
10,370
$33.39
$346.27K
Bolzon Bradley J PhD
13 Oct 2020
Director
Sell indirect
1,369
$33.39
$45.71K
Versant Venture Capital VI, L.P.
12 Oct 2020
10% owner
Sell
353
$33.11
$11.69K
Versant Venture Capital VI, L.P.
12 Oct 2020
10% owner
Sell indirect
47
$33.11
$1.56K
Bolzon Bradley J PhD
12 Oct 2020
Director
Sell indirect
353
$33.11
$11.69K
Bolzon Bradley J PhD
12 Oct 2020
Director
Sell indirect
47
$33.11
$1.56K
Versant Venture Capital VI, L.P.
9 Oct 2020
10% owner
Sell
3,357
$33.67
$113.02K
Versant Venture Capital VI, L.P.
9 Oct 2020
10% owner
Sell indirect
443
$33.67
$14.91K
Bolzon Bradley J PhD
9 Oct 2020
Director
Sell indirect
3,357
$33.67
$113.02K
Bolzon Bradley J PhD
9 Oct 2020
Director
Sell indirect
443
$33.67
$14.91K
Versant Venture Capital VI, L.P.
8 Oct 2020
10% owner
Sell
8,502
$33.68
$286.35K
Versant Venture Capital VI, L.P.
8 Oct 2020
10% owner
Sell
7,774
$33.25
$258.46K
Versant Venture Capital VI, L.P.
8 Oct 2020
10% owner
Sell indirect
1,122
$33.68
$37.79K
Versant Venture Capital VI, L.P.
8 Oct 2020
10% owner
Sell indirect
1,027
$33.25
$34.14K
Bolzon Bradley J PhD
8 Oct 2020
Director
Sell indirect
8,502
$33.68
$286.35K
Bolzon Bradley J PhD
8 Oct 2020
Director
Sell indirect
7,774
$33.25
$258.46K
Bolzon Bradley J PhD
8 Oct 2020
Director
Sell indirect
1,122
$33.68
$37.79K
Bolzon Bradley J PhD
8 Oct 2020
Director
Sell indirect
1,027
$33.25
$34.14K
Versant Venture Capital VI, L.P.
7 Oct 2020
10% owner
Sell
24,590
$33.56
$825.15K
Versant Venture Capital VI, L.P.
7 Oct 2020
10% owner
Sell indirect
3,246
$33.56
$108.92K
Bolzon Bradley J PhD
7 Oct 2020
Director
Sell indirect
24,590
$33.56
$825.15K
Bolzon Bradley J PhD
7 Oct 2020
Director
Sell indirect
3,246
$33.56
$108.92K
Versant Venture Capital VI, L.P.
6 Oct 2020
10% owner
Sell
15,980
$33.26
$531.48K
Versant Venture Capital VI, L.P.
6 Oct 2020
10% owner
Sell indirect
2,110
$33.26
$70.18K
Bolzon Bradley J PhD
6 Oct 2020
Director
Sell indirect
15,980
$33.26
$531.48K
Bolzon Bradley J PhD
6 Oct 2020
Director
Sell indirect
2,110
$33.26
$70.18K
Bolzon Bradley J PhD
11 Aug 2020
Director
Sell indirect
6,692
$33.08
$221.38K
Bolzon Bradley J PhD
11 Aug 2020
Director
Sell indirect
883
$33.08
$29.21K
Versant Venture Capital VI, L.P.
11 Aug 2020
10% owner
Sell
6,692
$33.08
$221.38K
Versant Venture Capital VI, L.P.
11 Aug 2020
10% owner
Sell indirect
883
$33.08
$29.21K
Bolzon Bradley J PhD
10 Aug 2020
Director
Sell indirect
5,492
$33.04
$181.45K
Bolzon Bradley J PhD
10 Aug 2020
Director
Sell indirect
725
$33.04
$23.95K
Versant Venture Capital VI, L.P.
10 Aug 2020
10% owner
Sell
5,492
$33.04
$181.45K
Versant Venture Capital VI, L.P.
10 Aug 2020
10% owner
Sell indirect
725
$33.04
$23.95K
Show all 228 transactions →

What was left out

Form 4 filings counted 245
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 35
Sales on a Rule 10b5-1 plan 1
Sales straight out of an exercise 49
Sales at will 140
Transactions with no price 0
Shares from compensation/vesting 34,697,005
Sales filed before the plan box existed 132
History held since 31 Jan 2020