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DYADIC INTERNATIONAL INC

DYAI Net selling
CIK 0001213809 #4921 in the set updated 17 Sep 2026
Bought (120 mo)
$124.97K
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$118.25B
$0.00 on a plan · $1.43M straight out of an exercise
Sold at will
$118.25B
18 of 35 sales
Net
−$118.25B
−$118.25B against sales at will

By person

11 insiders · 55 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Francisco Trust under agreement dated February 28, 1996 entity
10% owner
—
$118.25B (12)
−$118.25B
3,280,272
9.00%
$3.98M
−11.9%
EMALFARB MARK A
CEO
—
$1.64M (9)
−$1.64M
30,050,267
82.47%
$36.45M
+2.4%
TCHELET RONEN
VP of Research and Bus. Dvlpmt
—
$629.72K (13) scheduled
−$629.72K
50,897
0.1397%
$61.74K
—
Rawson Ping Wang
Chief Financial Officer
$100.27K (5)
—
+$100.27K
179,801
0.4934%
$218.12K
+538.7%
Buckland Barry
Director
—
$92.70K (1) scheduled
−$92.70K
38,967
0.1069%
$47.27K
—
Hazelton Joseph P
President & COO
$24.70K (1)
—
+$24.70K
191,758
0.5262%
$232.62K
—
Tarnok Michael P.
Director
—
—
—
281,033
0.7712%
$340.92K
+48.8%
HERBST SETH
Director
—
—
—
202,311
0.5552%
$245.42K
+574.4%
Kaye Jack
Director
—
—
—
81,201
0.2228%
$98.50K
+1,167%
Lucy Patrick K.
Director
—
—
—
72,311
0.1984%
$87.72K
—
Bose Arindam
Director
—
—
—
61,535
0.1689%
$74.65K
—

Individual transactions

55
Insider
Date
Role
Action
Shares
Price
Amount
Francisco Trust under agreement dated February 28, 1996
24 Jul 2026
10% owner
Sell
2,616
$1.21
$3.17K
Francisco Trust under agreement dated February 28, 1996
23 Jul 2026
10% owner
Sell
54,760
$1.30
$71.30K
Francisco Trust under agreement dated February 28, 1996
22 Jul 2026
10% owner
Sell
38,016
$1.33
$50.48K
Hazelton Joseph P
1 Aug 2025
President and COO
Buy
26,000
$0.95
$24.70K
Kaye Jack
5 Mar 2025
Director
Exercised, kept
22,500
$1.33
$29.93K
Kaye Jack
5 Mar 2025
Director
Exercised, kept
7,500
$1.33
$9.98K
Francisco Trust under agreement dated February 28, 1996
7 Jan 2025
10% owner
Sell
15,000
$2.01
$30.22K
HERBST SETH
6 Jan 2025
Director
Exercised, kept
6,250
$0.97
$6.06K
HERBST SETH
6 Jan 2025
Director
Exercised, kept
18,750
$0.97
$18.19K
Francisco Trust under agreement dated February 28, 1996
6 Jan 2025
10% owner
Sell
20,000
$1.92
$38.46K
Francisco Trust under agreement dated February 28, 1996
30 Dec 2024
10% owner
Sell
40,000
$1.98
$79.07K
Francisco Trust under agreement dated February 28, 1996
24 Dec 2024
10% owner
Sell
5,100
$1.80
$9.19K
Francisco Trust under agreement dated February 28, 1996
23 Dec 2024
10% owner
Sell
41,143
$1.84
$75.57K
Francisco Trust under agreement dated February 28, 1996
20 Dec 2024
10% owner
Sell
25,281
$1.87
$47.34K
Tarnok Michael P.
22 Nov 2024
Director
Exercised, kept
18,750
$0.97
$18.19K
Tarnok Michael P.
22 Nov 2024
Director
Exercised, kept
6,250
$0.97
$6.06K
Buckland Barry
11 Jun 2024
Director
Exercised, kept
11,793
$1.59
$18.75K
Francisco Trust under agreement dated February 28, 1996
6 Jun 2024
10% owner
Sell
26,340
$2.43
$63.91K
Tarnok Michael P.
21 May 2024
Director
Exercised, kept
16,875
$1.36
$22.95K
Tarnok Michael P.
21 May 2024
Director
Exercised, kept
5,625
$1.36
$7.65K
Tarnok Michael P.
21 May 2024
Director
Exercised, kept
7,500
$1.36
$10.20K
TCHELET RONEN
8 Jul 2022
VP of Research and Bus. Dvlpmt
Sold after exercise
1,089
$3.41
$3.71K
TCHELET RONEN
7 Jul 2022
VP of Research and Bus. Dvlpmt
Sold after exercise
7,854
$3.50
$27.49K
HERBST SETH
28 Jan 2022
Director
Exercised, kept
25,000
$1.21
$30.25K
EMALFARB MARK A
23 Dec 2021
President and CEO
Sold after exercise indirect
28,767
$4.10
$117.94K
EMALFARB MARK A
22 Dec 2021
President and CEO
Sell indirect
35,649
$4.12
$146.87K
EMALFARB MARK A
21 Dec 2021
President and CEO
Sell indirect
26,486
$4.33
$114.68K
Francisco Trust under agreement dated February 28, 1996
11 Aug 2021
10% owner
Sell
150,000
$770,983.56
$115.65B
Francisco Trust under agreement dated February 28, 1996
27 Jul 2021
10% owner
Sell
25,000
$103,965.00
$2.60B
EMALFARB MARK A
9 Jun 2021
President and CEO
Sold after exercise indirect
23,000
$3.72
$85.56K
EMALFARB MARK A
8 Jun 2021
President and CEO
Sell indirect
30,000
$3.82
$114.60K
EMALFARB MARK A
7 Jun 2021
President and CEO
Sell indirect
44,000
$3.95
$173.80K
EMALFARB MARK A
4 Jun 2021
President and CEO
Sold after exercise indirect
132,000
$3.85
$508.20K
EMALFARB MARK A
3 Jun 2021
President and CEO
Sell indirect
26,721
$3.61
$96.46K
Rawson Ping Wang
3 Jun 2021
Chief Financial Officer
Buy indirect
3,320
$3.60
$11.95K
Rawson Ping Wang
3 Jun 2021
Chief Financial Officer
Buy
1,350
$3.60
$4.86K
Rawson Ping Wang
2 Jun 2021
Chief Financial Officer
Buy
16,000
$3.70
$59.20K
EMALFARB MARK A
2 Jun 2021
President and CEO
Sell indirect
76,349
$3.74
$285.55K
Rawson Ping Wang
2 Jun 2021
Chief Financial Officer
Buy indirect
174
$3.89
$676.86
Rawson Ping Wang
2 Jun 2021
Chief Financial Officer
Buy indirect
6,156
$3.83
$23.58K
HERBST SETH
29 Jan 2021
Director
Exercised, kept
50,000
$1.93
$96.50K
TCHELET RONEN
11 Dec 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
4,575
$5.80
$26.54K
TCHELET RONEN
10 Dec 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
5,425
$5.84
$31.68K
Buckland Barry
3 Dec 2019
Director
Sold after exercise
15,000
$6.18
$92.70K
TCHELET RONEN
11 Nov 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
10,000
$5.99
$59.90K
TCHELET RONEN
11 Oct 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
5,218
$6.08
$31.73K
TCHELET RONEN
10 Oct 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
4,782
$6.04
$28.88K
TCHELET RONEN
10 Sep 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
10,000
$5.27
$52.70K
TCHELET RONEN
13 Aug 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
6,300
$5.75
$36.23K
TCHELET RONEN
12 Aug 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
3,700
$5.72
$21.16K
TCHELET RONEN
10 Jul 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
10,000
$5.87
$58.70K
TCHELET RONEN
18 Jun 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
20,000
$6.44
$128.80K
TCHELET RONEN
17 Jun 2019
VP of Research and Bus. Dvlpmt
Sold after exercise
20,000
$6.11
$122.20K
EMALFARB MARK A
12 Apr 2019
President and CEO
Exercised, kept indirect
37,500
$1.71
$64.13K
EMALFARB MARK A
12 Apr 2019
President and CEO
Exercised, kept indirect
12,500
$1.71
$21.38K

What was left out

Form 4 filings counted 114
Amendments (4/A) skipped 1
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 17
Sales at will 18
Transactions with no price 0
Shares from compensation/vesting 2,219,819
Sales filed before the plan box existed 8
History held since 12 Apr 2019