Comparable stake leader
Barry Diller
SEC ownership of IAC Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001800227.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- IAC on Nasdaq
- Parsed ownership sources
- 13D/G, 3/4/5, and 13F
- Largest SEC-reported holder
- Barry Diller
- Latest 13D/G holder
- Barry Diller
- Latest parsed ownership date
- 31 Mar 2026
- Issuer CIK
- 0001800227
- Issuer location
- New York, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of IAC Inc. (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
Barry Diller
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
13D/G
3/4/5
13F
Lead comparable stake: 8.1%
13D/G row: Barry Diller
Showing 1-8 of 50 holder rows.
Quick read
Barry Diller leads the comparable SEC ownership view at 8.1%.
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 Barry Diller's linked filing trail.
Comparable ownership
Top 5
Barry Diller
8.1%
ARISTEIA CAPITAL, L.L.C.
8%
HighSage Ventures LLC
7.3%
SOUTHEASTERN ASSET MANAGEMENT INC...
5.6%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.1%
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 |
|---|---|---|---|---|---|
| Barry Diller |
13D/G
3/4/5
Chairman & Senior Executive, Director
|
8.1%
|
$252,427,361
7,100,629 shares
|
$0 | 13 Jan 2025 |
| ARISTEIA CAPITAL, L.L.C. |
13F
13D/G
Company
|
8%
from 13D/G
|
$236,530,745
5,908,837 shares
|
— | 31 Mar 2026 |
| HighSage Ventures LLC |
13D/G
Stier Jennifer
|
7.3%
|
$219,028,027
5,394,779 shares
|
+$16,814,612 | 30 Jun 2025 |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ |
13F
13D/G
Company · Southeastern Asset Management, Inc.
|
5.6%
from 13D/G
|
$161,029,842
4,022,729 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.1%
|
$144,545,928
3,610,940 shares
|
$0 | 31 Mar 2026 |
| JPMORGAN CHASE & CO |
13D/G
13F
Company
|
4.9%
|
$124,354,035
3,649,957 shares
|
-$98,221,902 | 30 Sep 2025 |
| Joseph M. Levin |
13D/G
|
1.3%
|
$36,320,937
1,021,686 shares
|
$0 | 13 Jan 2025 |
| Alan G. Spoon |
3/4/5
Director
|
0.4%
|
$10,258,859
285,206 shares
|
— | 23 Jun 2025 |
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 selling over the last 12 months. Net value: -$278,801.
Buys
$0
Insiders: 0
Sells
$278,801
Insiders: 1
Net
-$278,801
Shares: -6,878
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 6,878
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 6,878 | $0 | $278,801 | -$278,801 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 20 reporting-owner rows connected to IAC Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
20
Largest Forms 3/4/5 holder
Barry Diller
Net 12M change
-$278,801
Latest report
12 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Barry Diller | Chairman & Senior Executive, Director | $26,617,117 | Mixed | 05 Nov 2025 | ||
| Mark J. Stein | Evp & Cso | $15,599,288 | Mixed | 08 Oct 2021 | ||
| Alan G. Spoon | Director | $10,258,859 | Mixed | 23 Jun 2025 | ||
| Michael D. Eisner | Director | $8,330,645 | Mixed | 31 Mar 2026 | ||
| Bryan Lourd | Director | $7,739,845 | Mixed | 31 Mar 2026 | ||
| Christopher Halpin | Evp, Cfo & Coo | $4,911,037 | Mixed | 06 Feb 2026 | ||
| Kendall Handler | Evp & Clo | $3,823,426 | Mixed | 06 Feb 2026 | ||
| Alexander von Furstenberg | Director | $3,819,186 | Mixed | 23 Jun 2025 | ||
| Victor Kaufman | Vice Chairman, Director | $3,526,732 | Mixed | 09 Feb 2026 | ||
| Chelsea Clinton | Director | $3,411,592 | Mixed | 31 Mar 2026 | ||
| David S. Rosenblatt | Director | $3,239,314 | Mixed | 23 Jun 2025 | ||
| Richard F. Zannino | Director | $2,210,808 | Mixed | 23 Jun 2025 | ||
| Glenn H. Schiffman | Evp & Cfo | $1,812,767 | Mixed | 25 May 2021 | ||
| Bonnie S. Hammer | Director | $1,312,453 | Mixed | 23 Jun 2025 | ||
| Michael H. Schwerdtman | SVP and CAO | $1,165,103 | -$278,801 | -19% | Filing P/S | 12 May 2026 |
| Tor Braham | Director | $567,000 | Mixed | 18 Jun 2025 | ||
| Maria Seferian | Director | $374,265 | Mixed | 31 Mar 2026 | ||
| Westley Moore | Director | $132,993 | Mixed | 25 Jul 2022 | ||
| Joseph M. Levin | Chief Executive Officer, Director | $0 | Mixed | 13 Jan 2025 | ||
| Erik Bradbury | Svp And Controller (Cao) | Mixed | 06 Feb 2024 |
Recent insider transactions for IAC Inc.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Michael H. Schwerdtman | IAC | Common Stock, par value $0.0001 | Sale | -19.3% | $278,801 | $40.54 | -6,878 | 28,743 | 12 May 2026 | Direct |
| Michael D. Eisner | IAC | Common Stock, par value $0.0001 | Award | 0.21% | 359 | 172,505 | 31 Mar 2026 | Direct | ||
| Bryan Lourd | IAC | Common Stock, par value $0.0001 | Award | 0.21% | 406 | 197,950 | 31 Mar 2026 | Direct | ||
| Chelsea Clinton | IAC | Common Stock, par value $0.0001 | Award | 0.18% | 156 | 87,253 | 31 Mar 2026 | Direct | ||
| Maria Seferian | IAC | Common Stock, par value $0.0001 | Award | 4.33% | 312 | 7,524 | 31 Mar 2026 | Direct | ||
| Michael H. Schwerdtman | IAC | Common Stock, par value $0.0001 | Tax liability | -11% | -4,384 | 35,621 | 28 Feb 2026 | Direct | ||
| Michael H. Schwerdtman | IAC | Common Stock, par value $0.0001 | Options Exercise | 39.2% | 11,262 | 40,005 | 28 Feb 2026 | Direct | ||
| Michael H. Schwerdtman | IAC | Restricted Stock Units | Options Exercise | -50% | -11,262 | 11,262 | 28 Feb 2026 | Direct | ||
| Victor Kaufman | IAC | Common Stock, par value $0.0001 | Tax liability | -4.29% | -1,007 | 22,483 | 10 Feb 2026 | Direct | ||
| Victor Kaufman | IAC | Common Stock, par value $0.0001 | Options Exercise | 11.6% | 2,445 | 23,490 | 10 Feb 2026 | Direct | ||
| Victor Kaufman | IAC | Restricted Stock Units | Options Exercise | -33.3% | -2,445 | 4,890 | 10 Feb 2026 | Direct | ||
| Victor Kaufman | IAC | Restricted Stock Units | Award | 6,845 | 6,845 | 09 Feb 2026 | Direct | |||
| Kendall Handler | IAC | Restricted Stock Units | Award | 123,220 | 123,220 | 09 Feb 2026 | Direct | |||
| Christopher Halpin | IAC | Restricted Stock Units | Award | 219,058 | 219,058 | 09 Feb 2026 | Direct | |||
| Kendall Handler | IAC | Common Stock, par value $0.0001 | Tax liability | -12% | -14,584 | 107,249 | 08 Feb 2026 | Direct | ||
| Kendall Handler | IAC | Common Stock, par value $0.0001 | Options Exercise | 30.6% | 28,568 | 121,833 | 08 Feb 2026 | Direct | ||
| Kendall Handler | IAC | Restricted Stock Units | Options Exercise | -66.7% | -28,568 | 14,284 | 08 Feb 2026 | Direct | ||
| Christopher Halpin | IAC | Common Stock, par value $0.0001 | Tax liability | -7.81% | -11,668 | 137,757 | 08 Feb 2026 | Direct | ||
| Christopher Halpin | IAC | Common Stock, par value $0.0001 | Options Exercise | 18.1% | 22,855 | 149,425 | 08 Feb 2026 | Direct | ||
| Christopher Halpin | IAC | Restricted Stock Units | Options Exercise | -50% | -22,855 | 22,855 | 08 Feb 2026 | Direct | ||
| Kendall Handler | IAC | Common Stock, par value $0.0001 | Tax liability | -30.7% | -32,062 | 72,387 | 06 Feb 2026 | Direct | ||
| Kendall Handler | IAC | Common Stock, par value $0.0001 | Options Exercise | 117.8% | 62,430 | 115,429 | 06 Feb 2026 | Direct | ||
| Kendall Handler | IAC | Restricted Stock Units | Options Exercise | -61.7% | -62,430 | 38,778 | 06 Feb 2026 | Direct | ||
| Christopher Halpin | IAC | Common Stock, par value $0.0001 | Tax liability | -43.1% | -64,292 | 84,994 | 06 Feb 2026 | Direct | ||
| Christopher Halpin | IAC | Common Stock, par value $0.0001 | Options Exercise | 283.8% | 125,653 | 169,931 | 06 Feb 2026 | Direct | ||
| Christopher Halpin | IAC | Restricted Stock Units | Options Exercise | -75.5% | -125,653 | 40,716 | 06 Feb 2026 | Direct | ||
| Maria Seferian | IAC | Common Stock, par value $0.0001 | Award | 4.64% | 320 | 7,212 | 31 Dec 2025 | Direct | ||
| Michael D. Eisner | IAC | Common Stock, par value $0.0001 | Award | 0.21% | 368 | 172,146 | 31 Dec 2025 | Direct | ||
| Chelsea Clinton | IAC | Common Stock, par value $0.0001 | Award | 0.18% | 160 | 87,097 | 31 Dec 2025 | Direct | ||
| Bryan Lourd | IAC | Common Stock, par value $0.0001 | Award | 0.21% | 416 | 197,544 | 31 Dec 2025 | Direct | ||
| Maria Seferian | IAC | Common Stock, par value $0.0001 | Options Exercise | 43.1% | 2,075 | 6,892 | 12 Dec 2025 | Direct | ||
| Maria Seferian | IAC | Restricted Stock Units | Options Exercise | -50% | -2,075 | 2,074 | 12 Dec 2025 | Direct | ||
| Kendall Handler | IAC | Common Stock, par value $0.0001 | Tax liability | -49.7% | -37,273 | 37,740 | 30 Nov 2025 | Direct | ||
| Kendall Handler | IAC | Common Stock, par value $0.0001 | Options Exercise | 452.9% | 73,012 | 89,134 | 30 Nov 2025 | Direct | ||
| Kendall Handler | IAC | Restricted Stock Units | Options Exercise | -100% | -73,012 | 0 | 30 Nov 2025 | Direct | ||
| Barry Diller | IAC | Common Stock, par value $0.0001 | Tax liability | -26.6% | -240,968 | 665,234 | 05 Nov 2025 | Direct | ||
| Barry Diller | IAC | Common Stock, par value $0.0001 | Options Exercise | 93.9% | 438,757 | 906,202 | 05 Nov 2025 | Direct | ||
| Barry Diller | IAC | Restricted Stock Units | Options Exercise | -100% | -438,757 | 0 | 05 Nov 2025 | Direct | ||
| Maria Seferian | IAC | Common Stock, par value $0.0001 | Award | 8.25% | 367 | 4,817 | 30 Sep 2025 | Direct | ||
| Chelsea Clinton | IAC | Common Stock, par value $0.0001 | Award | 0.21% | 183 | 86,937 | 30 Sep 2025 | Direct | ||
| Michael D. Eisner | IAC | Common Stock, par value $0.0001 | Award | 0.25% | 422 | 171,778 | 30 Sep 2025 | Direct | ||
| Bryan Lourd | IAC | Common Stock, par value $0.0001 | Award | 0.24% | 477 | 197,128 | 30 Sep 2025 | Direct | ||
| Michael D. Eisner | IAC | Common Stock, par value $0.0001 | Award | 0.2% | 343 | 170,711 | 30 Jun 2025 | Direct | ||
| Chelsea Clinton | IAC | Common Stock, par value $0.0001 | Award | 0.21% | 167 | 80,633 | 30 Jun 2025 | Direct | ||
| Maria Seferian | IAC | Common Stock, par value $0.0001 | Award | 8.26% | 335 | 4,392 | 30 Jun 2025 | Direct | ||
| Bryan Lourd | IAC | Common Stock, par value $0.0001 | Award | 0.24% | 407 | 170,244 | 30 Jun 2025 | Direct | ||
| Richard F. Zannino | IAC | Common Stock, par value $0.0001 | Award | 2.2% | 1,257 | 58,487 | 23 Jun 2025 | Direct | ||
| Richard F. Zannino | IAC | Restricted Stock Units | Options Exercise | -100% | -1,257 | 0 | 23 Jun 2025 | Direct | ||
| Bryan Lourd | IAC | Common Stock, par value $0.0001 | Award | 0.75% | 1,257 | 169,837 | 23 Jun 2025 | Direct | ||
| Bryan Lourd | IAC | Restricted Stock Units | Options Exercise | -100% | -1,257 | 0 | 23 Jun 2025 | Direct |
* marks a reported price that did not pass the local price check.