Vault-13

INTEGRAL AD SCIENCE HLDNG CO IAS

COM · Common Stock · CUSIP 45828L108 · ISIN US45828L1089

2 institutional holders -169 vs Q3 2025
330330 shares reported held*
$3.4kreported value*
0 new 1 added 1 reduced 166 sold out net sold ≈ $1.7bn (-162.6m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $10.34. Options: 0 managers hold calls (— notional), 1 hold puts ($0).

Trends to Q4 2025

Institutional holders

Managers reporting a position, each quarter

0100200Q3 22: 104Q4 22: 108Q1 23: 117Q2 23: 169Q3 23: 165Q4 23: 174Q1 24: 166Q2 24: 156Q3 24: 172Q4 24: 165Q1 25: 188Q2 25: 171Q3 25: 171Q4 25: 22Q3 22Q2 23Q1 24Q4 24Q4 25
Numbers
QuarterHolders
Q3 2022104
Q4 2022108
Q1 2023117
Q2 2023169
Q3 2023165
Q4 2023174
Q1 2024166
Q2 2024156
Q3 2024172
Q4 2024165
Q1 2025188
Q2 2025171
Q3 2025171
Q4 20252

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q1 24: 100 bought or addedQ1 24: 86 cut or sold outQ2 24: 96 bought or addedQ2 24: 84 cut or sold outQ2 24Q3 24: 91 bought or addedQ3 24: 83 cut or sold outQ4 24: 81 bought or addedQ4 24: 97 cut or sold outQ4 24Q1 25: 97 bought or addedQ1 25: 88 cut or sold outQ2 25: 107 bought or addedQ2 25: 96 cut or sold outQ2 25Q3 25: 102 bought or addedQ3 25: 92 cut or sold outQ4 25: 1 bought or addedQ4 25: 167 cut or sold outQ4 25
Numbers
QuarterBought or addedCut or sold out
Q1 202410086
Q2 20249684
Q3 20249183
Q4 20248197
Q1 20259788
Q2 202510796
Q3 202510292
Q4 20251167

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$500k$1m$1.5mQ1 25 calls: $293.4kQ1 25 puts: $14.5kQ1 25P/C 0.05Q2 25 calls: $103.0kQ2 25 puts: $24.9kQ2 25P/C 0.24Q3 25 calls: $1.1mQ3 25 puts: $34.6kQ3 25P/C 0.03Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —
Numbers
QuarterCallsPutsP/C
Q1 2025$293.4k$14.5k0.05
Q2 2025$103.0k$24.9k0.24
Q3 2025$1.1m$34.6k0.03
Q4 2025$0$0—

Biggest buyers

IFP Advisors, Inc Added +10+10

Biggest sellers

VISTA EQUITY PARTNERS MANAGEMENT, LLC Sold out -65,010,001-65.0m
Atlas Venture Advisors, Inc. Sold out -22,722,770-22.7m
VANGUARD GROUP INC Sold out -9,043,380-9.0m
Sunriver Management LLC Sold out -7,120,157-7.1m
BlackRock, Inc. Sold out -6,757,261-6.8m
DIMENSIONAL FUND ADVISORS LP Sold out -5,949,164-5.9m
P2 Capital Partners, LLC Sold out -4,830,805-4.8m
KRYGER CAPITAL Ltd Sold out -3,000,000-3.0m
NEXPOINT ASSET MANAGEMENT, L.P. Sold out -2,683,061-2.7m
GLAZER CAPITAL, LLC Sold out -2,096,797-2.1m

Biggest calls

None

Biggest puts

DV EQUITIES, LLC First filing $0200 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

No one currently above 5% in the filings since 19 Dec 2024.

Fell to 5% or below in the last year: GLAZER CAPITAL, LLC (4.2%, 2026-02-12), Vista Equity Partners Fund VI, L.P. (0.0%, 2025-12-29), Atlas Venture Fund VIII, L.P. (0.0%, 2025-12-23), Sunriver Management LLC (4.3%, 2025-11-13)

Holders, Q4 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 329329 $3.4k $3.4k 0.00% Added +10 +10
2 HUNTINGTON NATIONAL BANK 0.00% of their portfolio COLUMBUS, OH 11 $10 $10 0.00% Reduced -861 -861