Harbour Austin 4

4 · ProFrac Holding Corp. · Filed Mar 31, 2026

AI-generated summary of this filing

Updated Mar 31, 2026

ProFrac (ACDC) CFO Harbour Austin Sells Shares

What Happened

Harbour Austin, Chief Financial Officer of ProFrac Holding Corp. (ACDC), had vested restricted and performance-based shares settled in cash on March 27, 2026. The filing shows two dispositions to the issuer: 19,624 shares and 18,247 shares at $6.63 each, totaling $251,085 in cash proceeds. Separately, 12,191 shares were surrendered/used to satisfy tax withholding (no proceeds reported).

Key Details

Transaction dates and prices:
- 2026-03-27: Disposition to issuer — 19,624 shares @ $6.63 = $130,107
- 2026-03-27: Disposition to issuer — 18,247 shares @ $6.63 = $120,978
- 2026-03-27: Payment of tax liability (share surrender) — 12,191 shares @ $0.00 = $0
Total cash received from the two cash-settled dispositions: $251,085.
Shares owned after the transaction: not specified in the provided filing information.
Footnotes (high level):
- The disposals reflect partial cash settlement of RSUs granted March 28, 2025 and performance-based shares granted March 9, 2026 that vested on March 27, 2026 (F1, F2).
- Remaining portions of those awards vest equally on March 26, 2027 and March 28, 2028, subject to continued employment and good standing.
- The 12,191-share disposition relates to withholding to cover taxes on the vested awards (F3).
Filing timeliness: Report filed 2026-03-31 for transactions on 2026-03-27 — appears to be timely (filed within required business-day window).

Context

These transactions were cash settlements of vested awards and share withholding for taxes, not open-market sales. Such transactions are common for covering tax obligations on vested equity and do not necessarily indicate management sentiment about the stock.

Form 4

Period: 2026-03-27

Chief Financial Officer

Transactions

Disposition to Issuer
Class A Common Stock, par value $0.01
[F1]
2026-03-27$6.63/sh−19,624$130,107→ 130,561 total
Disposition to Issuer
Class A Common Stock, par value $0.01
[F2]
2026-03-27$6.63/sh−18,247$120,978→ 112,314 total
Tax Payment
Class A Common Stock, par value $0.01
[F3]
2026-03-27−12,191→ 100,123 total

Footnotes (3)

[F1]Reflects the partial disposal of restricted stock units granted to the reporting person on March 28, 2025, which vested on March 27, 2026 and were settled with the reporting person in cash. The remaining shares granted on March 28, 2025 will vest equally on March 26, 2027 and March 28, 2028, subject to the reporting person's continued employment and good standing through the applicable vesting date.
[F2]Reflects the partial disposal of performance-based shares of Company common stock, granted on March 9, 2026 under the 2025 performance-based award, which vested on March 27, 2026, and were settled with the reporting person in cash. The remaining shares granted on March 9, 2026 will vest equally on March 26, 2027 and March 28, 2028, subject to the reporting person's continued employment and good standing through the applicable vesting date.
[F3]Represents aggregate disposed shares, settled in cash, to satisfy withholding taxes applicable upon vesting of the March 28, 2025 grant of restricted stock units, including performance-based restricted stock units, under the 2022 Long Term Incentive Plan. This disposal covers withholding taxes applicable for all shares which vested on March 27, 2026.

Signature

/s/ Steven Scrogham, Attorney-in-Fact|2026-03-31

1 file