Acadian Asset Management LLC
· Exited
Change
−322K
Δ Own
−100.0%
Date
Q1 2026
SP
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Acadian Asset Management LLC
· Exited
Change
−322K
Δ Own
−100.0%
Date
Q1 2026
|
Acadian Asset Management LLC | Exited· Q1 2026 | – | −322K | −100.0% | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Reduced
Change
−143K
Date
Q1 2026
|
Goldman Sachs Group Inc | Reduced· Q1 2026 | – | −143K | – | Q1 2026 | |||||
|
BlackRock
· Reduced
Change
−123K
Date
Q1 2026
|
BlackRock | Reduced· Q1 2026 | – | −123K | – | Q1 2026 | |||||
|
FMR LLC
· Reduced
Change
−112K
Δ Own
−88.2%
Date
Q1 2026
|
FMR LLC | Reduced· Q1 2026 | – | −112K | −88.2% | Q1 2026 | |||||
|
Los Angeles Capital Management LLC
· Exited
Change
−102K
Δ Own
−100.0%
Date
Q1 2026
|
Los Angeles Capital Management LLC | Exited· Q1 2026 | – | −102K | −100.0% | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
Change
−89K
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | – | −89K | – | Q1 2026 | |||||
|
Quantinno Capital Management LP
· Reduced
Change
−67K
Date
Q1 2026
|
Quantinno Capital Management LP | Reduced· Q1 2026 | – | −67K | – | Q1 2026 | |||||
|
Geode
· Reduced
Change
−53K
Date
Q1 2026
|
Geode | Reduced· Q1 2026 | – | −53K | – | Q1 2026 | |||||
|
Connor, Clark & Lunn Investment Management Ltd.
· Reduced
Change
−52K
Date
Q1 2026
|
Connor, Clark & Lunn Investment Management Ltd. | Reduced· Q1 2026 | – | −52K | – | Q1 2026 | |||||
|
Csm Advisors, LLC
· Reduced
Change
−50K
Date
Q1 2026
|
Csm Advisors, LLC | Reduced· Q1 2026 | – | −50K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Reduced
Change
−43K
Δ Own
−68.2%
Date
Q1 2026
|
Two Sigma Investments, LP | Reduced· Q1 2026 | – | −43K | −68.2% | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
Change
−42K
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | – | −42K | −100.0% | Q1 2026 | |||||
|
Trexquant Investment LP
· Reduced
Change
−42K
Date
Q1 2026
|
Trexquant Investment LP | Reduced· Q1 2026 | – | −42K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
Change
−32K
Δ Own
−64.2%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | – | −32K | −64.2% | Q1 2026 | |||||
|
Barclays PLC
· Reduced
Change
−29K
Date
Q1 2026
|
Barclays PLC | Reduced· Q1 2026 | – | −29K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Shockley Brett A.
· Director
Grant (A)
$25K
|
Shockley Brett A. | Director | Grant (A) | $10.24 | 2K | $25K | 41K | +6.4% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Cournoyer Christine
· Director
2 operations
2K
|
Cournoyer Christine | Director | 2 operations | $10.24 | 2K | – | 6K | – | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Hyun Randy
· Director
Grant (A)
$25K
|
Hyun Randy | Director | Grant (A) | $10.24 | 2K | $25K | 39K | +6.7% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Stein Todd J.
· Director
3 operations
2K
|
Stein Todd J. | Director | 3 operations | $10.24 | 2K | – | 567K | – | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Byrne Barbara Peterson
· Director
2 operations
2K
|
Byrne Barbara Peterson | Director | 2 operations | $10.24 | 2K | – | 6K | – | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Stein Todd J.
· Director
3 operations
|
Stein Todd J. | Director | 3 operations | $10.41 | – | – | 48K | – | Jun 16, 2026 | Jun 17, 2026 | |||||||||
|
Kelly Vincent D.
· Director
Buy
+$53K
|
Kelly Vincent D. | Director | Buy | $10.70 | +5K | +$53K | 168K | – | May 12, 2026 | May 12, 2026 | |||||||||
|
Kelly Vincent D.
· Director
Buy
+$53K
|
Kelly Vincent D. | Director | Buy | $10.67 | +5K | +$53K | 163K | – | May 11, 2026 | May 12, 2026 | |||||||||
|
Kelly Vincent D.
· Director
Other Form 4 event (P, derivative)
0
|
Kelly Vincent D. | Director | Other Form 4 event (P, derivative) | – | 0 | – | 209K | – | May 11, 2026 | May 12, 2026 | |||||||||
|
Woods-Keisling Sharon
· Officer
Sell
−$110K
|
Woods-Keisling Sharon | Officer | Sell | $11.00 | −10K | −$110K | 26K | – | May 5, 2026 | May 6, 2026 | |||||||||
|
Woods-Keisling Sharon
· Officer
Other Form 4 event (S, derivative)
0
|
Woods-Keisling Sharon | Officer | Other Form 4 event (S, derivative) | – | 0 | – | 48K | – | May 5, 2026 | May 6, 2026 | |||||||||
|
Rice Calvin
· CFO
2 operations
|
Rice Calvin | CFO | 2 operations | – | – | – | 68K | – | Apr 14, 2026 | Apr 14, 2026 | |||||||||
|
Byrne Barbara Peterson
· Director
2 operations
2K
|
Byrne Barbara Peterson | Director | 2 operations | $10.90 | 2K | – | 6K | – | Apr 1, 2026 | Apr 1, 2026 | |||||||||
|
Cournoyer Christine
· Director
2 operations
2K
|
Cournoyer Christine | Director | 2 operations | $10.90 | 2K | – | 6K | – | Apr 1, 2026 | Apr 1, 2026 | |||||||||
|
Shockley Brett A.
· Director
Grant (A)
$25K
|
Shockley Brett A. | Director | Grant (A) | $10.90 | 2K | $25K | 38K | – | Apr 1, 2026 | Apr 1, 2026 | |||||||||
A
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135 reporting institutions disclosed SPOK position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.