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MAIA Biotechnology, Inc.

MAIA Net buying
CIK 0001878313 #4432 in the set updated 17 Sep 2026
Bought (120 mo)
$5.27M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$0.00
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 0 sales
Net
+$5.27M
+$5.27M against sales at will

By person

10 insiders · 143 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Smith Stan
Director
$2.81M (52)
+$2.81M
1,519,178
$2.08M
+438.0%
Guerrero Ramiro
Director
$987.80K (26)
+$987.80K
773,296
$1.06M
+198.1%
Louie Ngar Yee
Director
$547.92K (5)
+$547.92K
1,248,888
$1.71M
+37.5%
Vitoc Vlad
Chief Executive Officer
$405.79K (27)
+$405.79K
1,259,221
$1.73M
+26.8%
Luput Cristian
Director
$266.32K (21)
+$266.32K
437,628
$599.55K
+57.7%
CHAOUKI STEVEN M
Director
$171.08K (4)
+$171.08K
151,873
$208.07K
+268.2%
MCGUIRE JOSEPH F
Chief Financial Officer
$34.90K (2)
+$34.90K
9,400
$12.88K
Vlad Laurentiu
Director
$25.00K (1)
+$25.00K
376,933
$516.40K
+1.3%
Gryaznov Sergei
Chief Scientific Officer
$17.69K (2)
+$17.69K
46,511
$63.72K
+116.2%
Obrocea Mihail
Chief Medical Officer
$5.00K (1)
+$5.00K
27,100
$37.13K
+3.8%

No percentages here. This company's share count has moved by a factor of 2.4 over the window, from 25,332,069 to 60,825,844 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Vitoc Vlad
14 Sep 2026
Chief Executive Officer
Buy
73,000
$1.37
$100.01K
Guerrero Ramiro
10 Sep 2026
Director
Buy
37,595
$1.32
$49.52K
Guerrero Ramiro
28 Aug 2026
Director
Buy
46,620
$1.35
$62.94K
Guerrero Ramiro
27 Aug 2026
Director
Buy
78,239
$1.39
$108.75K
Guerrero Ramiro
26 Aug 2026
Director
Buy
8,931
$1.39
$12.41K
Guerrero Ramiro
24 Aug 2026
Director
Buy
1,794
$1.33
$2.39K
Guerrero Ramiro
20 Aug 2026
Director
Buy
11,899
$1.37
$16.30K
Gryaznov Sergei
1 Jun 2026
Chief Scientific Officer
Buy
2,000
$1.35
$2.69K
Smith Stan
1 Jun 2026
Director
Buy indirect
75,000
$1.34
$100.20K
Vitoc Vlad
1 Jun 2026
Chief Executive Officer
Buy
72,700
$1.39
$100.89K
Louie Ngar Yee
22 Dec 2025
Director
Buy
81,699
$1.22
$100.00K
CHAOUKI STEVEN M
22 Dec 2025
Director
Buy
40,849
$1.22
$50.00K
Smith Stan
22 Dec 2025
Director
Buy indirect
57,189
$1.22
$70.00K
Smith Stan
5 Dec 2025
Director
Buy indirect
4,580
$1.20
$5.50K
Smith Stan
5 Dec 2025
Director
Buy indirect
4,580
$1.19
$5.45K
Smith Stan
5 Dec 2025
Director
Buy indirect
4,580
$1.20
$5.49K
Luput Cristian
28 Nov 2025
Director
Buy
18,145
$1.11
$20.23K
Vitoc Vlad
28 Nov 2025
Chief Executive Officer
Buy
50,000
$1.14
$56.83K
Smith Stan
26 Nov 2025
Director
Buy indirect
15,000
$1.04
$15.58K
Luput Cristian
26 Nov 2025
Director
Buy
20,000
$1.08
$21.62K
Vitoc Vlad
26 Nov 2025
Chief Executive Officer
Buy
22,000
$1.05
$23.02K
Smith Stan
25 Nov 2025
Director
Buy indirect
15,000
$0.98
$14.70K
Vitoc Vlad
25 Nov 2025
Chief Executive Officer
Buy
10,500
$0.97
$10.14K
Luput Cristian
25 Nov 2025
Director
Buy
10,000
$0.98
$9.79K
Vitoc Vlad
24 Nov 2025
Chief Executive Officer
Buy
10,000
$0.99
$9.89K
Smith Stan
24 Nov 2025
Director
Buy indirect
10,000
$0.99
$9.90K
Vitoc Vlad
21 Nov 2025
Chief Executive Officer
Buy
1,800
$0.92
$1.66K
Smith Stan
1 Oct 2025
Director
Buy indirect
19,230
$1.30
$25.00K
Smith Stan
3 Jun 2025
Director
Buy indirect
33,333
$1.50
$50.00K
Smith Stan
8 May 2025
Director
Buy indirect
66,666
$1.50
$100.00K
Guerrero Ramiro
8 May 2025
Director
Buy
20,000
$1.50
$30.00K
Smith Stan
3 Mar 2025
Director
Buy indirect
25,000
$1.50
$37.50K
Guerrero Ramiro
3 Mar 2025
Director
Buy
33,333
$1.50
$50.00K
Smith Stan
24 Feb 2025
Director
Buy indirect
50,000
$1.50
$75.00K
Guerrero Ramiro
24 Feb 2025
Director
Buy
73,333
$1.50
$110.00K
Guerrero Ramiro
13 Dec 2024
Director
Buy
53,418
$1.87
$100.00K
Smith Stan
13 Dec 2024
Director
Buy indirect
25,000
$1.87
$46.80K
Smith Stan
1 Nov 2024
Director
Buy indirect
100,000
$2.51
$251.00K
Guerrero Ramiro
1 Nov 2024
Director
Buy
88,534
$2.51
$222.22K
CHAOUKI STEVEN M
1 Nov 2024
Director
Buy
22,133
$2.51
$55.55K
Luput Cristian
1 Nov 2024
Director
Buy
22,133
$2.51
$55.55K
Smith Stan
25 Apr 2024
Director
Buy indirect
147,492
$2.03
$299.41K
Louie Ngar Yee
25 Apr 2024
Director
Buy
19,665
$2.03
$39.92K
Guerrero Ramiro
14 Mar 2024
Director
Buy
6,928
$1.17
$8.11K
Luput Cristian
14 Mar 2024
Director
Buy
69,282
$1.17
$81.06K
Louie Ngar Yee
14 Mar 2024
Director
Buy
170,940
$1.17
$200.00K
Smith Stan
14 Mar 2024
Director
Buy indirect
170,940
$1.17
$200.00K
CHAOUKI STEVEN M
14 Mar 2024
Director
Buy
34,641
$1.17
$40.53K
Guerrero Ramiro
18 May 2023
Director
Buy
1,200
$2.47
$2.96K
Luput Cristian
15 May 2023
Director
Buy
3,000
$2.63
$7.89K
Vitoc Vlad
28 Apr 2023
Chief Executive Officer
Buy
4,000
$2.50
$10.00K
Smith Stan
27 Apr 2023
Director
Buy indirect
133,300
$2.25
$299.93K
Louie Ngar Yee
27 Apr 2023
Director
Buy
48,000
$2.25
$108.00K
Guerrero Ramiro
27 Apr 2023
Director
Buy
8,500
$2.25
$19.13K
MCGUIRE JOSEPH F
27 Apr 2023
Chief Financial Officer
Buy
4,400
$2.25
$9.90K
Smith Stan
20 Apr 2023
Director
Buy indirect
10,000
$3.74
$37.40K
Guerrero Ramiro
18 Apr 2023
Director
Buy
1,263
$4.17
$5.27K
Luput Cristian
17 Apr 2023
Director
Buy
1,576
$3.69
$5.82K
Luput Cristian
14 Apr 2023
Director
Buy
802
$3.58
$2.87K
Luput Cristian
13 Apr 2023
Director
Buy
622
$3.62
$2.25K
Vitoc Vlad
4 Apr 2023
Chief Executive Officer
Buy
925
$3.56
$3.29K
Vitoc Vlad
3 Apr 2023
Chief Executive Officer
Buy
1,375
$3.50
$4.81K
Vitoc Vlad
31 Mar 2023
Chief Executive Officer
Buy
1,495
$3.46
$5.17K
Vitoc Vlad
30 Mar 2023
Chief Executive Officer
Buy
205
$3.43
$703.15
Smith Stan
24 Mar 2023
Director
Buy indirect
938
$3.49
$3.27K
Smith Stan
23 Mar 2023
Director
Buy indirect
1,862
$3.43
$6.39K
Smith Stan
22 Mar 2023
Director
Buy indirect
1,458
$3.18
$4.64K
Smith Stan
21 Mar 2023
Director
Buy indirect
2,736
$3.17
$8.67K
Smith Stan
20 Mar 2023
Director
Buy indirect
3,006
$3.28
$9.86K
Guerrero Ramiro
16 Mar 2023
Director
Buy
1,333
$3.64
$4.85K
Luput Cristian
13 Mar 2023
Director
Buy
3,000
$4.07
$12.21K
Guerrero Ramiro
10 Mar 2023
Director
Buy
443
$3.98
$1.76K
Luput Cristian
10 Mar 2023
Director
Buy
5,382
$3.99
$21.47K
Luput Cristian
9 Mar 2023
Director
Buy
2,114
$3.98
$8.41K
Smith Stan
9 Mar 2023
Director
Buy indirect
3,582
$4.03
$14.44K
Guerrero Ramiro
9 Mar 2023
Director
Buy
1,057
$3.98
$4.21K
Vitoc Vlad
8 Mar 2023
Chief Executive Officer
Buy
1,581
$4.21
$6.66K
Smith Stan
8 Mar 2023
Director
Buy indirect
3,076
$4.20
$12.92K
Luput Cristian
8 Mar 2023
Director
Buy
627
$4.22
$2.65K
Vitoc Vlad
7 Mar 2023
Chief Executive Officer
Buy
1,439
$4.24
$6.10K
Guerrero Ramiro
7 Mar 2023
Director
Buy
871
$4.25
$3.70K
Luput Cristian
7 Mar 2023
Director
Buy
1,688
$4.23
$7.14K
Smith Stan
7 Mar 2023
Director
Buy indirect
1,961
$4.23
$8.30K
Smith Stan
6 Mar 2023
Director
Buy indirect
4,594
$4.39
$20.17K
Vitoc Vlad
6 Mar 2023
Chief Executive Officer
Buy
544
$4.24
$2.31K
Guerrero Ramiro
6 Mar 2023
Director
Buy
481
$4.24
$2.04K
Luput Cristian
6 Mar 2023
Director
Buy
527
$4.24
$2.23K
Vitoc Vlad
3 Mar 2023
Chief Executive Officer
Buy
2,398
$4.47
$10.72K
Smith Stan
3 Mar 2023
Director
Buy indirect
2,509
$4.43
$11.11K
Smith Stan
2 Mar 2023
Director
Buy indirect
23
$4.41
$101.43
Vitoc Vlad
2 Mar 2023
Chief Executive Officer
Buy
45
$4.42
$198.90
Vitoc Vlad
1 Mar 2023
Chief Executive Officer
Buy
282
$4.48
$1.26K
Smith Stan
1 Mar 2023
Director
Buy indirect
198
$4.48
$887.04
Smith Stan
28 Feb 2023
Director
Buy indirect
1,619
$4.48
$7.25K
Vitoc Vlad
28 Feb 2023
Chief Executive Officer
Buy
1,275
$4.49
$5.72K
Smith Stan
27 Feb 2023
Director
Buy indirect
219
$4.47
$978.93
Smith Stan
22 Feb 2023
Director
Buy indirect
1,073
$4.48
$4.81K
Smith Stan
21 Feb 2023
Director
Buy indirect
228
$4.49
$1.02K
Luput Cristian
17 Feb 2023
Director
Buy
76
$4.24
$322.24
Guerrero Ramiro
17 Feb 2023
Director
Buy
50
$4.25
$212.50
Smith Stan
17 Feb 2023
Director
Buy indirect
75
$4.25
$318.75
Vitoc Vlad
17 Feb 2023
Chief Executive Officer
Buy
73
$4.25
$310.25
Vitoc Vlad
16 Feb 2023
Chief Executive Officer
Buy
10
$4.25
$42.50
Luput Cristian
16 Feb 2023
Director
Buy
58
$4.25
$246.50
Guerrero Ramiro
16 Feb 2023
Director
Buy
10
$4.25
$42.50
Smith Stan
16 Feb 2023
Director
Buy indirect
62
$4.25
$263.50
Luput Cristian
15 Feb 2023
Director
Buy
10
$4.25
$42.50
Smith Stan
15 Feb 2023
Director
Buy indirect
10
$4.25
$42.50
Vitoc Vlad
15 Feb 2023
Chief Executive Officer
Buy
10
$4.25
$42.50
Luput Cristian
14 Feb 2023
Director
Buy
14
$4.25
$59.50
Smith Stan
14 Feb 2023
Director
Buy indirect
198
$4.25
$841.50
Smith Stan
10 Feb 2023
Director
Buy indirect
337
$4.25
$1.43K
Vitoc Vlad
10 Feb 2023
Chief Executive Officer
Buy
343
$4.24
$1.45K
Smith Stan
26 Jan 2023
Director
Buy indirect
227
$4.24
$962.48
Smith Stan
25 Jan 2023
Director
Buy indirect
9
$4.25
$38.25
Luput Cristian
13 Jan 2023
Director
Buy
504
$3.88
$1.96K
Vitoc Vlad
4 Jan 2023
Chief Executive Officer
Buy
1,266
$3.68
$4.66K
Vitoc Vlad
3 Jan 2023
Chief Executive Officer
Buy
2,324
$3.64
$8.46K
Smith Stan
30 Dec 2022
Director
Buy indirect
500
$3.50
$1.75K
Vitoc Vlad
30 Dec 2022
Chief Executive Officer
Buy
410
$3.50
$1.44K
Smith Stan
29 Dec 2022
Director
Buy indirect
1,471
$3.49
$5.13K
Smith Stan
28 Dec 2022
Director
Buy indirect
1,266
$3.41
$4.32K
Smith Stan
27 Dec 2022
Director
Buy indirect
604
$3.38
$2.04K
Smith Stan
23 Dec 2022
Director
Buy indirect
981
$3.45
$3.38K
Smith Stan
22 Dec 2022
Director
Buy indirect
731
$3.34
$2.44K
Smith Stan
21 Dec 2022
Director
Buy indirect
399
$3.43
$1.37K
Smith Stan
20 Dec 2022
Director
Buy indirect
4,048
$3.53
$14.29K
Gryaznov Sergei
7 Dec 2022
Chief Scientific Officer
Exercised, kept
10,000
$1.83
$18.30K
Smith Stan
19 Sep 2022
Director
Buy indirect
2,700
$3.69
$9.96K
Guerrero Ramiro
13 Sep 2022
Director
Buy
8,799
$3.85
$33.88K
Guerrero Ramiro
30 Aug 2022
Director
Buy
283
$3.97
$1.12K
Gryaznov Sergei
24 Aug 2022
Chief Scientific Officer
Exercised, kept
10,000
$1.80
$18.00K
Guerrero Ramiro
1 Aug 2022
Director
Buy
20,000
$5.00
$100.00K
Vlad Laurentiu
1 Aug 2022
Director
Buy
5,000
$5.00
$25.00K
Luput Cristian
1 Aug 2022
Director
Buy
500
$5.00
$2.50K
MCGUIRE JOSEPH F
1 Aug 2022
Chief Financial Officer
Buy
5,000
$5.00
$25.00K
Vitoc Vlad
1 Aug 2022
Chief Executive Officer
Buy
6,000
$5.00
$30.00K
Gryaznov Sergei
1 Aug 2022
Chief Scientific Officer
Buy
3,000
$5.00
$15.00K
CHAOUKI STEVEN M
1 Aug 2022
Director
Buy
5,000
$5.00
$25.00K
Obrocea Mihail
1 Aug 2022
Chief Medical Officer
Buy
1,000
$5.00
$5.00K
Louie Ngar Yee
1 Aug 2022
Director
Buy
20,000
$5.00
$100.00K
Smith Stan
1 Aug 2022
Director
Buy indirect
200,000
$5.00
$1.00M
Guerrero Ramiro
28 Jul 2022
Director
Buy
9,000
$4.00
$36.00K

What was left out

Form 4 filings counted 225
Amendments (4/A) skipped 5
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 55,200
History held since 2 Aug 2022