SEC ownership of AMERICAN VANGUARD CORP

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000005981.

Comparable stake leader

BlackRock, Inc.

Disclosed value leader

WELLINGTON MANAGEMENT GROUP LLP

Comparable rows

50/50

Latest evidence

04 Jun 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
04 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0000005981
Issuer location
Newport Beach, CA

Ownership snapshot

Top shareholders of AMERICAN VANGUARD CORP (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
BlackRock, Inc.
Disclosed value leader
WELLINGTON MANAGEMENT GRO...
Comparable rows
50/50
Latest evidence
04 Jun 2026
13D/G 13F 3/4/5 Lead comparable stake: 6.4% 13D/G row: BlackRock, Inc. Showing 1-8 of 50 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 6.4%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership Top 5
BlackRock, Inc. 6.4%
WELLINGTON MANAGEMENT GROUP LLP 5.7%
DIMENSIONAL FUND ADVISORS LP 4%
Keith M. Rosenbloom 2.2%
Patrick E. Gottschalk 0.78%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
BlackRock, Inc.
13D/G 13F
Company
6.4%
$7,079,838
1,806,081 shares
$0 30 Jun 2025
WELLINGTON MANAGEMENT GROUP LLP
13D/G 13F
Company
5.7%
$9,347,756
1,628,529 shares
+$428,439 30 Sep 2025
DIMENSIONAL FUND ADVISORS LP
13D/G 13F
Company
4%
$5,496,817
1,401,427 shares
$0 30 Jun 2025
Keith M. Rosenbloom
3/4/5
Director
2.2%
$3,286,968
638,064 shares
04 Jun 2026
Patrick E. Gottschalk
3/4/5
Director
0.78%
$556,706
223,577 shares
+$184,900 04 Jun 2026
Mark R. Bassett
3/4/5
Director
0.31%
$223,898
89,919 shares
04 Jun 2026
Steven D. Macicek
3/4/5
Director
0.28%
$200,970
80,711 shares
04 Jun 2026
Marisol Angelini
3/4/5
Director
0.24%
$171,217
68,762 shares
04 Jun 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to buying over the last 12 months. Net value: +$165,300.

Buys
$197,400
Insiders: 2
Sells
$32,100
Insiders: 1
Net
+$165,300
Shares: +64,000
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 70,000 Shares: 6,000
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 70,000 0 $197,400 $0 +$197,400
3-6 0 0 $0 $0 $0
6-9 0 0 $0 $0 $0
9-12 0 6,000 $0 $32,100 -$32,100

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 33 reporting-owner rows connected to AMERICAN VANGUARD CORP. Open a relationship link for the CIK-to-CIK filing trail.

Rows
33
Largest Forms 3/4/5 holder
Eric G. Wintemute
Net 12M change
+$165,300
Latest report
04 Jun 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Eric G. Wintemute Chairman, Director $7,373,275 Mixed 29 Aug 2024
Keith M. Rosenbloom Director $3,286,968 Mixed 04 Jun 2026
Ulrich Trogele COO, Sr. VP AMVAC Chemical Corp. $1,840,613 Filing P/S 16 May 2024
Timothy J. Donnelly CLO, General Counsel & Sec'y $992,532 Mixed 04 Jun 2026
David T. Johnson Chief Financial Officer & Treasurer $963,932 Mixed 04 Jun 2026
Scott Hendrix SVP Crop Sales, US & Canada $875,827 Mixed 22 Jan 2024
Douglas Kaye CHIEF EXECUTIVE OFFICER, Director $750,627 +$12,500 +1.7% Filing P/S 04 Jun 2026
John L. Killmer Director $594,610 Mixed 02 Jun 2021
Johann Venter Vice President Technology (AMVAC) $575,928 Mixed 20 Apr 2022
Patrick E. Gottschalk Director $556,706 +$184,900 +50% Median 04 Jun 2026
Esmail Zirakparvar Director $472,908 Mixed 02 Jun 2021
Lawrence S. Clark Director $442,295 Mixed 02 Jun 2021
Peter Porpiglia Vice President Product Dev't (AMVAC) $421,903 Mixed 22 Jan 2024
Shayne M. Wetherall Ceo, Amguard $337,210 Mixed 03 Sep 2024
Morton D. Erlich Director $331,700 Mixed 07 Jun 2023
Debra F. Edwards Director $290,638 Mixed 06 Jun 2024
Anne Turnbough Vice President/Regulatory Affairs - AMVAC $274,980 Mixed 03 Sep 2024
Suneet Ranganath V.P. Global Supply Chain & Manufacturing $266,615 Mixed 03 Sep 2024
Alfred F. Ingulli Director $255,944 Mixed 02 Jun 2021
Mark R. Bassett Director $223,898 Median 04 Jun 2026

Recent insider transactions for AMERICAN VANGUARD CORP

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Keith M. Rosenbloom AVD Common Stock Award 92.6% 31,872 66,283 04 Jun 2026 Direct
David T. Johnson AVD Option to Buy Award 20,000 20,000 04 Jun 2026 Direct
Douglas Kaye AVD Option to Buy Award 50,000 50,000 04 Jun 2026 Direct
Rubin J. McDougal AVD Common Stock Award 31,872 31,872 04 Jun 2026 Direct
Michael Joseph Dipaola AVD Option to Buy Award 20,000 20,000 04 Jun 2026 Direct
Patrick E. Gottschalk AVD Common Stock Award 16.6% 31,872 223,577 04 Jun 2026 Direct
Jared Straley AVD Option to Buy Award 20,000 20,000 04 Jun 2026 Direct
Shirin Khosravi AVD Option to Buy Award 20,000 20,000 04 Jun 2026 Direct
Nolteanous Gilliam AVD Option to Buy Award 20,000 20,000 04 Jun 2026 Direct
Timothy J. Donnelly AVD Option to Buy Award 20,000 20,000 04 Jun 2026 Direct
Steven D. Macicek AVD Common Stock Award 65.3% 31,872 80,711 04 Jun 2026 Direct
Mark R. Bassett AVD Common Stock Award 54.9% 31,872 89,919 04 Jun 2026 Direct
Marisol Angelini AVD Common Stock Award 86.4% 31,872 68,762 04 Jun 2026 Direct
Douglas Kaye AVD Common Stock Purchase 1.69% $12,500 $2.50 5,000 300,251 03 Jun 2026 Direct
Patrick E. Gottschalk AVD Common Stock Purchase 15% $67,500 $2.70 25,000 191,705 19 May 2026 Direct
Patrick E. Gottschalk AVD Common Stock Purchase 13.6% $59,000 $2.95 20,000 166,705 13 May 2026 Direct
Patrick E. Gottschalk AVD Common Stock Purchase 15.8% $58,400 $2.92 20,000 146,705 12 May 2026 Direct
Douglas Kaye AVD Common Stock Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities 1.65% 4,790 295,251 29 Jan 2026 Direct
Patrick E. Gottschalk AVD Common Stock Other 59.5% 47,281 126,705 26 Nov 2025 Direct
Keith M. Rosenbloom AVD Common Stock Other -27.6% -217,503 571,781 26 Nov 2025 See Note
Mark R. Bassett AVD Common Stock Other 68.7% 23,636 58,047 26 Nov 2025 Direct
Peter Eilers AVD Common Stock Sale -15.7% $32,100 $5.35 -6,000 32,177 04 Sep 2025 Direct
Keith M. Rosenbloom AVD Common Stock Award 105% 17,621 34,411 07 Aug 2025 Direct
Mark R. Bassett AVD Common Stock Award 105% 17,621 34,411 07 Aug 2025 Direct
Carmen Tiu de Mino AVD Common Stock Award 259.7% 17,621 24,407 07 Aug 2025 Direct
Marisol Angelini AVD Common Stock Award 91.4% 17,621 36,890 07 Aug 2025 Direct
Emer Gunter AVD Common Stock Award 35.4% 8,810 33,723 07 Aug 2025 Direct
Steven D. Macicek AVD Common Stock Award 56.4% 17,621 48,839 07 Aug 2025 Direct
Scott D. Baskin AVD Common Stock Award 26.6% 8,810 41,997 07 Aug 2025 Direct
Patrick E. Gottschalk AVD Common Stock Award 28.5% 17,621 79,424 07 Aug 2025 Direct
* marks a reported price that did not pass the local price check.
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